Tuesday, 7 January 2020

The Biomass Belt Revisited - A Polyculture for Producing Fertility Without Manure

Back in May of 2016, I published an article on an experimental polyculture for meeting the fertility demands of the fruits, nuts, herbs and perennial vegetables on our plot without relying on animal manures and imported compost. We called this polyculture the biomass belt.


The Biomass Belt - Producing  Fertility Without Manure 

You can find the original biomass belt article here. 4 years later we have had a chance to see how the polyculture has performed and have learned a thing or two about the way the plants interact with each other, what works and what does not. During this post, I'll be revising the design based on our observations and presenting a version of the design that appears to be working well in our polyculture market garden.


I'll start with an introduction to the polyculture and the species involved and go through the design considerations, development, and management practices for this polyculture. We'll look at how the polyculture has developed in our garden and how you can purchase the plants (or seeds and cuttings) from our nursery should you wish to try growing this polyculture in your own garden.


But first just to let you know we've revamped our Online Store where you can find Forest Garden/ Permaculture Plants, Seeds, Cuttings, Bulbs, Rhizomes and Polyculture Multi-packs along with digital goods and services such as Online Courses, Webinars, eBooks, and Online Consultancy and finally we've added a Bulk Fruit and Nut Tree order form for Farms, Orchards, Nurseries, and Large Regenerative Landscape Projects. If there is anything in the store you would like to see but is not there, please let us know. We hope you enjoy the store and find something you like :) It's your purchases that keep our Project going. Thank you. Enter Our Store Here

Plants, Seeds, eBooks, Consultancy, Bulk Fruit and Nut Tree Orders for Permaculture, Polyculture, Forest Gardens and Regenerative Landscapes.

So let's start with what is the Biomass Belt

What is the Biomass Belt ?


The biomass belt is a simple closed system, perennial polyculture dedicated to growing mulch and fertilizer for annual and perennial crops.

How does it work?


The polyculture is composed of mineral accumulating comfrey in raised beds, Nitrogen fixing ground cover sown into pathways and a Nitrogen fixing hedgerow.


Illustration by Georgi Pavlov

The comfrey is grown in raised beds for biomass and can be cut from 4 - 7 times each year with the material being used to make liquid fertilizer or used directly as mulch. The deep-rooted comfrey mines nutrients deep in the subsoil that would otherwise wash away with the underground soil water or remain inaccessible to other plants. Some of these nutrients are relocated within the comfrey leaf and when cut and applied as mulch or converted into liquid fertilizer, the nutrients are delivered back to the topsoil again accessible to crops and other plants.

Illustration by Georgi Pavlov

The Nitrogen hungry comfrey is fed with the biomass from Nitrogen fixing plants, that through a partnership with soil micro-organisms can convert atmospheric Nitrogen into Nitrogen fertilizers useful to themselves, but also becoming available to neighboring plants. For more on Nitrogen fixation see here.

Illustration by Georgi Pavlov

The pathways between the beds are sown with a Nitrogen fixing ground cover and mown following a comfrey cut with the trimmings applied to the comfrey beds.  The hedge composed of Nitrogen-fixing shrubs and fast-growing grasses running parallel to the comfrey beds, once mature, is trimmed at regular intervals (once or twice per year) with the trimmings deposited onto the comfrey beds.
Each time the path vegetation and hedge are cut, root tissue underground is shed in to the soil providing significant quantities of organic matter and nutrients to the plants.

In summary, the unique ability of the Comfrey to feed deep and produce copious quantities of biomass is utilized to provide nutrients to main crops whilst the pathway ground cover and hedgerow's unique ability to fix Nitrogen is utilized to provide nutrients to the comfrey.


Illustration by Georgi Pavlov

What follows is a design guide covering how to select a site for this polyculture,  a close look at each component of the design and the species within each component, and what I hope are clear and concise instructions to build and manage this polyculture.  At the end of the post you can find a summary table of the plant species, a brief description of how we have set up this polyculture in our Polyculture  Market Garden and a link to purchase the polyculture from our bio nursery in plant or seed form

Design Considerations


General - The polyculture can be situated to provide boundary hedging or subdivision hedging within a property whereby the Nitrogen fixing hedge provides a permanent living fence and the comfrey beds run adjacent to the hedge. 

Light demands -  For optimal growth, the polyculture should be orientated along the west-east axis and be to the north of any light demanding crops to reduce shading. The plants we have selected below will grow in partial shade and on other orientations but will yield less biomass as a result.

Water -  Adequate irrigation is a key to healthy and productive plants. This polyculture is not well suited to semi wetlands and areas with a high water table and will not thrive in very dry areas with no access to irrigation. In dryland/climate, selecting a position for the polyculture that requires as little irrigation as possible is essential and can be achieved by planting on contour and using simple earthworks to keep rainwater around the root zones of plants.
N.B. All of the plants we have included in the polyculture are drought tolerant (Trifolium repens - White Clover to a lesser extent) and will survive long periods without water once established, but will not produce high yields of biomass in these conditions.

Subsoil Mining - Siting the biomass patch, specifically the comfrey beds, below compost toilets/manure piles and areas that are likely to receive nontoxic leachate will help prevent the loss of nutrients draining off-site.

Proximity to crops - Consider the distance between your beds and where you need to apply the mulch or prepare and store the liquid fertilizer. If growing comfrey for mulch it probably doesn't make much sense having to haul the material over large distances.

Species Selection - Species selection should take into account the following;

  • Climatic compatibility with the site
  • Drought tolerance
  • Speed of growth i.e fast-growing  
  • Tolerance of hard pruning
  • Benefits to wildlife

Ground Preparation


Raised beds are a major part of our fertility strategy and when managed properly overtime they retain water and nutrients very efficiently. This polyculture can include one or two 1.3 m wide raised beds for comfrey surrounded by 50 cm paths and a 70 cm wide raised bed for the Nitrogen fixing hedge. It's important never to tread on the soil of a raised bed and the above dimensions allow reach within the beds from the pathways. The bed length can be as long as best fits your site and needs. The following illustrations and photographs are based on a 10 m long section of this polyculture.

Example Perennial Polyculture - The Biomass Belt - Bed Layout

To form the beds the area should be cleared of all plants, best achieved in most situations by sheet mulching with ample organic matter 6 months prior to planting. Pernicious perennials such as wild brambles - Rubus fruticosus and couch grass - Elymus repens should be dug out before mulching and the soil should be forked over as deeply as possible with a strong garden fork.


If you have a heavy clay compact soil it's best to double dig and incorporate plenty of organic matter (20- 40 L m2) into the comfrey beds before planting.


The right shape shovel for forming paths  

Once you have cleared the whole area of weeds and forked it over to relieve compaction, mark out the bed shapes with string and dig out a 10 cm layer of soil 50 cm wide to create paths around the bed, applying the soil to the surface of the planting area and thereby creating a raised section of earth that will be your bed. A flat bottomed shovel is a good tool for this job.



The beds with corners pegged and string attached 

If you are not sheet mulching, remove all weeds, fork over the beds, cut out the pathways and apply 20 L of compost per m length of the comfrey beds and 5 L to the nitrogen-fixing hedge bed. The compost should be applied to the surface and topped with a 20 cm layer of mulch.

The biomass belt beds, forked over with compost and mulch applied - Photo by Trisha Franke 

The beds are now ready for planting and the paths for sowing.


A side note when path forming - We are fortunate to have access to a stream that we can divert into the site and we flood paths for irrigation. When establishing the paths we alter the depth and gradient to facilitate the required movement of water within the polyculture. The slower the water travels along the paths the less erosion there will be. Capillary action draws the water deep into the beds and underground.

Below you will find a closer look at each component in further detail based on a version of this design we have implemented in our Market Garden

The Polyculture Components


  1. Nitrogen Fixing Hedge
  2. Nitrogen Fixing Ground Cover 
  3. Comfrey Bed


   

1. Nitrogen Fixing Hedge


The Nitrogen fixing hedge supplies a significant biological source of Nitrogen and biomass, habitat for wildlife including a number of beneficial species, and makes an excellent living boundary/fence on the perimeter of a site or as a subdivision within a site.

The hedge is composed of two species of nitrogen-fixing shrubs Elaeagnus angustifolia - Russian Olive and Elaeagnus umbellata - Autumn Olive and one the fastest-growing plants in the temperate zone  Miscanthus x giganteus - Giant Miscanthus. 

Below is a design illustration of a mature Nitrogen fixing hedge.





Planting Distances for the Hedgerow




Maintaining the Nitrogen Fixing Hedge



Formative Pruning and Trimming - If planting out single stemmed whips, the following formative pruning is necessary during or after planting out. Cut up to 1/3rd off from the top of the whips. The cut should be made just above a node and at a 45-degree angle.  This will encourage the plant to form a multi-stemmed crown. The following year the tips of each of the multi stems can be cut again encouraging further branching. Once the plants have developed full crowns they can be trimmed to reduce width and to the desired height at least once per year. After trimming, the arisings can be raked onto the comfrey bed.  The Miscanthus plants can be cut annually with the stems chopped up into 10-20 pieces and placed on the comfrey beds.

The best time to trim the hedge is early winter when the comfrey is dormant and mid-summer after the comfrey has been cut. The summer cut avoids disturbing nesting birds and provides mulch during the dry season.

The biomass belt in Year 4 with the hedgerow forming nicely

Feeding - These plants will not require any feeding, however, mulching with a 30 cm diameter mulch mat or card/straw mulch whilst the plants are establishing for the first 2-3 years will be beneficial both in reducing irrigation needs and preventing weed competition.

Irrigation - The first season after planting, irrigation should be applied when the soil beneath the mulch is dry. In the following years irrigation is only necessary during very dry summers and should be applied before the plants begin to wilt. The plants will grow much faster and produce significantly more biomass if they have a good supply of water.

Native wild plants that emerge around the shrubs can be left to grow freely once the shrubs have matured and if they are not directly competing.

Nitrogen Fixing Hedge - Species Overview 


Elaeagnus umbellata - Autumn Olive


Permaculture Plant - Elaeagnus umbellata  

Overview: A large deciduous shrub from E.Asia, growing 4.5 m high and 4.5 m wide, hardy to zone 3 (-35C) tolerates part shade, very drought tolerant. Branches are often thorny, leaves are bright green and silvery beneath. Yellowish white, fragrant flowers are produced in May-June, followed by rounded silvery brown (ripening red) fruits in Sep-Oct. Sometimes cultivated for its edible fruit. There are many named cultivars. Flowers are rich nectar and very aromatic. Plants can fruit in 5 yrs from seed. This specie is considered invasive in the U.S

Uses: Edible fruit raw or cooked which is very tasty and can be made into jams, preserves etc. The fruit contains about 8.3% sugars. 4.5% protein. 12 mg per 100 mg Vitamin C. The harvested fruit stores for approximately 15 days at room temperature. It can be used as a hedge plant and tolerates maritime exposure succeeding in the most exposed positions. The nectar from the flowers is attractive to bees comprising 28% sugars. The plant is used as a nurse tree, when planted with fruit trees it is reported to increase the overall yield of the orchard by 10%. It can also be grown as a biomass crop on a 3 year rotation.

Nitrogen Fixing Potential:
 The species is classified by USDA as being a MEDIUM nitrogen fixer with estimated yields of 85-160lbs/acre or 39-72kg/4050m² or 0.014g /m2.

Biodiversity - The shrubs will begin to flower in the 4th or 5th year after planting and are attractive to a wide range of pollen and nectar feeding invertebrates. If you leave some fruits on the tree they provide a good source of winter food for birds. In time as the hedge thickens up with regular pruning, suitable nesting habitat will form inside the lower part of the hedge. Birds such as Wren, Chiffchaff and Robin are commonly found in dense low hedging. These birds can help to keep common vegetable pest populations low.

Propagation: Seed - best sown as soon as it is ripe in a cold frame. It should germinate in late winter or early spring, though it may take 18 months. Stored seed can be very slow to germinate, often taking more than 18 months. A warm stratification for 4 weeks followed by 12 weeks cold stratification can help. The seed usually (eventually) germinates quite well. Prick out the seedlings into individual pot as soon as they are large enough to handle and plant out when they are at least 15 cm tall. 

Planting Material – 3 year old plants will provide an instant hedge effect but can prove expensive when planting out large areas. 1st year whips are cost effective and with proper pruning and some attention during the first few years of development will quickly fill out.

These plants can be grown from seed although may take up to 18 months to germinate.  Once they do germinate they can be ready to plant out 7-8 months later and can starting providing good quantities of biomass within a few years.   

We supply Elaeagnus umbellata seeds and 1st year saplings from our plant nursery - Click here for more info.


Elaeagnus angustfolia - Oleaster, Russian Olive




Overview:A deciduous large shrub or small tree from Europe and W.Asia, growing approx 7m high and 7m wide. Hardy to zone 2 (-40C), tolerates part shade, salt and air pollution.
It has silvery branches often thorny, with silvery scales when young, silvery willow-like leaves, silvery flowers in June and yellowish-silvery fruits ripening in October. Plants prefer continental climate.
This specie is often cultivated in Europe and Asia for its edible fruits (there are many named varieties some of which are thorn less). The plants begin to flower and fruit from three years old. It is very tolerant of pruning even right back into old wood. The flowers are sweetly scented. Fruits hang on the plant for much of the winter providing a valuable source of winter food for birds. The fruit is readily eaten and disseminated by many species of birds. This species is considered invasive in the United States.

Uses: Edible fruit -raw or cooked as a seasoning in soups. The taste is dry sweet and mealy. The oval fruits are about 10mm long and contain 17 amino acids with total sugars making 54%of the composition. In China they are made into a beverage
Expected fruit yields are 7-9kg per plant. The seed is edible raw or cooked. The seed oil, flowers and leaves are used medicinally. Plants can be grown as a hedge in exposed positions, tolerating maritime exposure. An essential oil obtained from the flowers is used in perfumery. A gum from the plant is used in the textile industry in calico printing. Leaves are used as goat and sheep fodder. The wood is hard, fine-grained and used for posts, beams, carving, domestic items and makes good fuel. The plant is attractive to bees and is known to be grown as a biomass crop on a 3 year rotation. In Pakistan it is valued as a pollard fuel and fodder crop.  

Nitrogen Fixing Potential: This specie is classified by USDA as being a HIGH nitrogen fixer with estimated yields of 160+ lbs/acre or 72>kg/4050m²

Propagation: Establishment and reproduction of Elaeagnus angustifolia is primarily by seed, although some spread by vegetative propagation also occurs. Cold stratification required for 30-60 days.


N.B I'm not sure how the Nitrogen fixing potential of the above species are calculated and the relationship between regular pruning and N input into soils, but it's something I intend to look into further.  If anybody can clarify this matter please comment below.


CAUTION - These are pioneer plants, their ecological role is to take a position in disturbed sites and sites of poor fertility. In doing so they restore soil health and build fertility eventually giving way to more permanent plants. If allowed to seed these plants will quickly colonize disturbed sites such as vast areas of plowed fields that have been extensively cleared of nearly all wildlife to cater for industrial agricultural practices. Because of the tendency of these plants to establish quickly in these areas, they are often referred to, rather ironically, as noxious and invasive species. There may be some examples of these plants displacing healthy native floral communities but not that I have witnessed. It's advisable to check your local environmental agency to see whether these plants are considered invasive in your area before planting. 


Miscanthus x giganteus - Giant Miscanthus 



Overview: M. × giganteus is indeed a grass of giant proportions, forming very tall clumps of green leaves, their tips bending gracefully in layers.  It grows well on marginal land and needs little fertility, it is a C4 plant, and thus exhibits greater photosynthetic efficiency and lower water use requirements than other kinds of plants. It has very low nutritional requirements – it has high nitrogen use efficiency and therefore is capable of growing well on barren land without the aid of heavy fertilization. These attributes may make this plant an excellent "grow your own" mulch option.


Uses: Mulch and biomass, Used as high-quality bedding typically for equine applications. Used as a cover crop providing shelter for game birds such as Pheasants and Partridges. Capable of producing relatively high quantities of ethanol fuel from the biomass 

Propagation: The plants can be propagated easily from division and even from small pieces of rhizomes 

Planting Material: Rhizomes of these plants can be used and will establish well within a few seasons.

All of these plants are available in a multipack from our online store here or as individual plants from our bio nursery


2. Nitrogen Fixing Ground Cover


White Clover - Trifolium repens   under the shade of a Walnut tree in our forest garden four months after sowing.  

A perennial Nitrogen fixing ground cover should be established quickly in the pathways and on the vertical edges of the bed to protect the soil from erosion and provide a further source of Nitrogen input to the polyculture. I have experience using White Clover - Trifolium repens for this purpose but there may be other suitable species.

Sowing the Ground Cover


Following digging out the pathways, slightly loosen the surface of the path with a rake and hand sow the white clover seed onto the surface of the path and into vertical edges of the beds at a rate of 0.75 g per m length of bed. Tamp down with a shovel and water with a fine head sprinkler. The seed should germinate within 5 - 6 days. The best time to sow is late April - mid-June. Keep a close eye on the emerging seedlings and irrigate when below the soil surface is dry. Keep foot traffic to an absolute minimum whilst the cover is establishing.

Maintaining the Nitrogen Fixing Ground Cover  


Once established the cover will tolerate light foot traffic, i.e, related to the management of the polyculture. If the pathway is used extensively its unlikely productive cover will establish although cover on the vertical edges of the beds will do.  The pathway cover can be cut the following spring after sowing and then on each occasion after the comfrey is cut. The trimming can be emptied around the base of the cut comfrey plants.  A lawnmower with a maximum width of 50 cm with a catch bag is ideal for mowing the pathways. If you mow up and down the path with one wheel on the edge of the bed in one direction and one wheel on the other edge of the bed in the other direction you can also effectively cut the bed margin growth too.  Allowing some patches of the clover to flower and seed provides a good source of nectar/pollen to native bees and a bank of seed in the soil for self resowing.  

Nitrogen Fixing Ground Cover Species Overview 


Trifolium repens -White Clover


Plants for Pathways - Trifolium repens - White Clover 

Overview: White clover is a dwarf, prostrate, mat-forming perennial that can spread via stems which freely root along the ground at the nodes. Easily grown in average, medium, well-drained soils in full sun to part shade. Prefers moist soils in light shade, but tolerates full sun and moderately dry soils.

Uses:  White clover has been described as the most important forage legume of the temperate zones. Besides making an excellent forage crop for livestock,  clovers are a valuable survival food: they are high in proteins and although not easy for humans to digest raw, this is easily fixed by boiling the harvested plants for 5–10 minutes. Dried flower heads and seedpods can also be ground up into a nutritious flour and mixed with other foods, or can be steeped into an herbal tea. The plants ability to spreads aggressively by creeping stems makes is a good ground cover plant.  The plant is also used as a companion plant  when undersown with cereals or tomatoes.

Nitrogen Fixing Potential:  The species is classified by USDA as being a HIGH Nitrogen fixer with estimated yields of +160lbs/acre or +72kg/4050m² or 0.018g /m2.

Other sources state up to 545 kg of N per hectare per year is possible.

Biodiversity: The plants provide a source of nectar and pollen for a number of native bees as well as the honey bee.

Propagation: Best propagated by seed.  Pre-soak the seed for 12 hours in warm water and then sow in spring in situ. Division is also possible in the spring and autumn. 

Planting Material: For covering an area quickly seed is the best option.

We supply Trifolium repens - White Clover seed  from our plant nursery - Click here for more info.

3. Comfrey Beds


The comfrey beds provide copious amounts of biomass rich in Nitrogen, Phosphorus, Potassium, Calcium and many other valuable plant nutrients that the plants mine deep in the subsoil. The plants can produce 60 cm long roots that harvest these nutrients and relocate them into the plant biomass back on the surface. The biomass is used to feed crops in the garden

Comfrey Patch Layout  

Planting out the Comfrey Patch 


Spacing - The plants should be spaced 60 cm apart in rows and 60 cm apart at diagonals between rows. Plant the rows 15 cm from the edge of the beds. 



Maintaining the Comfrey Patch


Cutting - In the first year allow the plants to establish so that the roots develop well and penetrate deep into the subsoil. The following year the cuttings can begin. You can scythe the beds for a quick harvest or cut each plant individually with a pair of secateurs or hand sickle. Cut to 5 or so cm from ground level. The leaves are prickly so if you have sensitive hands wear gloves. You can cut the comfrey as the flowering stalks emerge up to 4 times a year. Allow the plants to flower at least once during the season to provide bee fodder to a range of native bees as well as Honey bees. Leave the last flush of leaves before the winter so that invertebrates can find winter shelter in the undergrowth.

Feeding
 - After you have cut the comfrey, mow the pathways between the beds and empty the contents to the base of the comfrey plants. Any mowings from the surrounding area can be used in a similar way. As the Nitrogen fixing hedge establishes, they should be trimmed to the required height and shape with the trimmings also applied to the comfrey. This can be done once a year for the first 4 years but biannually as the hedge develops. For extra feed and to increase yields undiluted urine can be applied to the plant at a rate of approx 1L per plant twice per growing season. Urine is an excellent feed for comfrey.

Irrigation - Comfrey will produce more biomass if irrigated and in dry climates it's essential to irrigate. Comfrey plants wilt very fast in hot conditions and will stop photosynthesising at this point.


20 L m2 / week should be more than adequate. The beauty of biological systems are that if they are managed correctly, each year the soil in the beds will improve resulting in less water required and higher yields.


Comfrey Beds Species Overview 


Species - Symphytum x uplandicum - Comfrey 'Bocking 14'


Permaculture Plant- Comfrey - Symphytum x uplandicum 'Bocking 14'

Overview - 'Bocking 14' is a hybrid comfrey plant developed in the 1950s by an original ecotrepreneur Lawrence D Hills specifically for its ability to produce tremendous quantities of biomass. Comfrey is adaptable to many soils but prefers moist, fertile soils. Thin soils over rock will give a poor crop, but on light sands and loams, this crop will be productive if adequate nutrients are present.  Comfrey productivity is not very sensitive to soil pH, but the highest yields occur on soils with a pH of 6.0 to 7.0. For more on this incredible plant see a previous post Comfrey - Believe The Hype

Uses - The healing properties of this herb are well renowned, making it an essential first aid plant.  The beautiful flowers are highly attractive to a wide range of bees including Apis mellifera - the western honey bee. Comfrey has a long history of use as an animal feed. The leaves are best received by animals wilted. Fresh leaves can be eaten by pigs, sheep, and poultry but cattle, rabbits and horses will prefer to consume wilted leaves. Research indicates that a comfrey solution can be used to prevent powdery mildew. Pest predators such as spiders, lacewings and parasitoid wasps associate with this plant. It's best to leave some plants alone in order to sustain pest predator relationships.

Uses - Mulch - Freshly cut comfrey leaves make good mulch because they're high in Nitrogen, so they don't pull nitrogen from the soil while decomposing, as high-carbon mulches like straw and leaves do. Comfrey's high potassium content makes it especially beneficial for vegetables (such as tomatoes, peppers, and cucumbers), berries, and fruit trees. With adequate feed and watering, we've seen yields of 2 - 3 kg of biomass per plant per cut. Plants can be cut up to four times in a year.

One of our comfrey beds before and after the first cut of 2016.

Uses - Liquid Fertiliser - What I like to call "Comfert". Fill a barrel, preferably with a bottom tap and a gauze on the inside (to prevent clogging) about 3/4 full with fresh-cut comfrey and add water to fill the barrel. Cover it, and let it steep for 3 to 6 weeks. The smell from the resulting liquid is far from attractive so approach with caution :) The tea may be used at full strength or diluted by half or more. Don't apply before heavy rain is forecast as most of the nutrients suspended in the liquid will wash straight through the soil. For the best results apply the feed to your vegetables when they are in most need of the extra fertility. This will be different for each crop, for example, tomatoes are best fed when they are setting fruit and then any time during the fruiting period. Applying comfert before this can be counter-productive and make your plants more susceptible to pest problems. The black slurry at the bottom of the barrel can be dispersed evenly back over the comfrey patch.

Uses - Liquid fertilizer concentrate:
 "Comfert Plus" can also be made by packing fresh-cut comfrey tops into an old bucket, weighing them down with something heavy, covering tightly, and waiting a few weeks for them to decompose into a black slurry. You can put a hole into the bottom of the bucket and collect the concentrate in another container as it drips out. Dilute this comfrey concentrate about 15 to 1 with water, and use as you would Comfert. You can seal this concentrate in plastic jugs until you are ready to use it.

Biodiversity - The last growth of comfrey leaves can be left uncut before the winter. The leaves can provide habitat for nesting spiders and invertebrates. Allow the plants to flower at least once between cuts to provide bee fodder to a range of native bees as well as honey bees. Cutting back the flowering comfrey when neighboring crop plants are in flower will drive the pollinators to your crops, increasing the likelihood of successful pollination.

Propagation - Root cuttings are the only way to propagate 'Bocking 14'.  The cuttings should be grown on in small pots and planted out in the spring as soon as the first leaves emerge.

Planting Material - You can plant out with crown divisions or root cuttings. A crown division is simply putting a spade through the center of a mature comfrey plant and transplanting the divided sections. I divided the crown into quarters and these established very well in the first year. Do not cut the plants in the first year in order to allow a deep root system to develop.

In 2016 we started our comfrey trials measuring the inputs and outputs of a 13 m2 patch of Comfrey. For information on this trial see here.

Just in case you have not heard :) we have revamped the online store and now have excellent Comfrey 'Bocking 14' root cuttings and crowns available from The Polyculture Project online store.

The Polyculture Project Online Store



Biomass Belt Overview



Enki- Species List (per 10 m length) based on one comfrey bed
QtyBotanical name
Common name
FamilyHardiness
USDA
LayerFunction
N fixers
6Elaeagnus umbellata
Autumn Olive
Elaeagnaceae4a - 8bShrubFertility/Biomass/Polleniser
Berries/Windbreak
5Elaeagnus angustifolia
Russian olive
Elaeagnaceae3a - 8bShrubFertility/Biomass/Polleniser
Berries/Windbreak
Biomass Plants
10Miscanthus x giganteus
Giant Miscanthus
Poaceae4a -9bHerb Biomass/Nesting Habitat
52Symphytum x uplandicum
Comfrey
Boraginaceae4a -9bHerbBiomass/Fertility/Polleniser
Ground Cover
50 gTrifolium repens
White Clover
Fabaceae 4-8Ground Fertility/Polleniser 

If you would like to try the biomass belt in your garden or farm you can buy all of the plants for a 10m section of the belt in our multipack from our store here. We are also offering the polyculture in seed/cutting packs that you can find here.

You are also welcome to purchase the plants separately and you can find links to each species below. Just send us an email with your order.

Biomass Belt Plants
  


The Biomass Belt in Our Market Garden


Garden Overview

Location: Shipka, Bulgaria, Southeast Europe
​Climate: Temperate
Köppen Climate Classification - Dfc borderline Cfb
USDA Hardiness Zone: 5b (conservative) - 7a (risky)
Latitude: 42°
Elevation: 565 m
Average Annual Rainfall: 588.5 mm
Prevailing Wind: NW & NE
Garden Name: Aponia - Polyculture Market Garden
Garden Location on our Project Map - See here 


The hedge of fast-growing Nitrogen fixing shrubs is planted into 70 cm wide "no tread" bed rows that run parallel to 1.30 m wide "no tread" bed rows of Comfrey 'Bocking 14'. In between the beds are 50 cm wide pathways that are sown with a Nitrogen fixing ground cover such as Trifolium repens.


The biomass belt is located in the red box in the above image of our Polyculture Market Garden.  


The beds run lengthwise west to east with the comfrey beds on the south and the nitrogen-fixing hedge on the north. This is to maximize plant exposure to sunlight. The beds and paths are laid out on contour with the beds elevated around 10 - 15 cm above the surrounding pathways. We irrigate the beds by diverting stream water into the paths and dropping sandbags at various ends to control the level. We can raise the water level in paths to approximately 15 cm resulting in the thorough absorption of water into the bed soil. Water is drawn up towards the surface of the bed via capillary action.

We produced liquid fertilizer from one of the comfrey beds for the first two years with the other bed used for harvesting comfrey root cuttings and we have harvested 1000's of cuttings from this bed.

The liquid fertilizer provided a great supplemental feed for the plants in our young raised beds. As the garden beds developed overtime, soil conditions improved and the liquid feed was unnecessary. We now use the comfrey biomass to apply directly as mulch to perennial beds in the forest garden for our soft fruiting shrubs and fruit trees.

All in all, we're pretty happy with how the polyculture has turned out. The area is teeming with wildlife during the growing season, the biomass production from the beds and hedge is high and the maintenance is relatively low. The hedging density could probably be halved although it would take a year or two longer to establish. we have not been irrigating the area for the last two year and Irrigation would certainly boost productivity as I've noticed in wet summers the comfrey patch is much more vigorous. we'll see in the coming years how the hedge matures and perhaps one concern may be that more trimming of the hedge facing the path may be required for ease of access. 

Here you can see how the polyculture has developed over the years.


If you would like to learn how to design polycultures for gardens and farms that can produce food and other resources while enhancing biodiversity take a look at our brand spanking new Online Learning Platform and join us for our very first Regenerative Landscape Design Online Course this spring where we will be learning How to Design, Build and Manage Polycultures for Landscapes, Gardens and Farms.

If you would rather learn in the field we have courses running throughout the year and a 1-6 month internships running from 1st April - 30th Sep 2020 - see below for details.

Regenerative Landscape Design - OnlineInteractive Course - How to Design, Build and Manage Polycultures for Landscapes, Gardens, and Farms

Please Consider Supporting Our Efforts 


Our project grows with our desire to provide better quality information. Our overheads and demands on our time also grow along with our development and this presents a challenge for us to maintain the project and activities. We do not receive any government, institutional or NGO funding for our project and rely on revenue from sales of our courses, plants, consultancy, and design work along with the support of our amazing volunteers to develop and manage the gardens and are very grateful for this. So please consider joining us for a course or event, purchasing products and services from our online store or plants from our bio nursery, participating in our online educational platforms and support the project while we support you. Feeling super generous today? You can also support us directly with a one-time donation or become a sponsor of our project providing monthly support. With your support, we will continue to improve on producing quality information and data for the community, building a world-class demonstration landscape and progress on our mission to develop and promote practices that can produce food and other resources for humans while enhancing biodiversity.

 

We also accept donations via bank transfer in USD - EURO - GBP - AUD - NZD  - (please email for account details) and via peer to peer distributed ledger - BTC - ETH



If you are not in a financial position to purchase our products and services or donate please comment, like and share our work. This helps us to spread our work further afield and is much appreciated.

--------------------------------------------------------------------------------------------------------------------------

Upcoming Forest Garden Courses 


If you would like to create a forest garden and gain some practical hands-on experience come and join us for our Desing and Build a Forest Garden Course. We'll be covering site surveying, landscape design software, installing access, beds, irrigation channels, planting tree, shrub, herb and ground layers, and wildlife ponds. All in 3 days! And plenty of follow up material to take away with you to digest slowly.

Design and Build - Forest Garden Course  - Regenerative Landscape Design Course

Registration for our course is now open with a 15% discount on accommodation and food fees when you register as a group (2 or more). You can also take advantage of early booking discounts if you book 3 months before the course starts.


----------------------------------------------------------------------------------------------------------------------

Would you like to be involved in the project next season?  1-6 month placements on our polyculture study are now open. 


Permaculture and Regenerative Design Internships


--------------------------------------------------------------------------------------------------------------------------




If you appreciate the work we are doing you can show your support in several ways.

  • Comment, like and share our content on social media.

 


--------------------------------------------------------------------------------------------------------------------------

We offer a diversity of plants and seeds for permaculture, forest gardens and regenerative landscapes including a range of fruit and nut cultivars. We Deliver all over Europe from Nov - March. - Give a happy plant a happy home :)


Our Bio-Nursery - Permaculture/Polyculture/ Regenerative Landscape Plants 


--------------------------------------------------------------------------------------------------------------------------

Design and Create Webinars - Forest Gardens, Urban Gardens, Permaculture, Regenerative Farming   


We're hosting a range of online learning sessions including how to create habitat to enhance biodiversity, how to design and build a forest garden, polyculture design software tutorials, regenerative farm, and landscape design, urban gardening and much more. If you would like to be notified when our next sessions are coming up please add your email below and hit subscribe and we'll be in touch.




You can also register for our online training, services, and products directly here.

Friday, 27 December 2019

Biodiversity and Habitat - How we may support biodiversity as we grow food and other resources in our regenerative landscapes.

Last season we started a new survey in an attempt to gain an understanding of the biodiversity within various habitats of a regenerative landscape. During this post I'll introduce the garden we carried out the surveys in, overview the habitat types within the garden that we looked at, I'll present the survey protocol, share the results with you from the late Summer Survey and end with some discussion of the survey and results.

The Polyculture Project Habitat Survey

But first just to let you know we've revamped our Online Store where you can find Forest Garden/ Permaculture Plants, Seeds, Cuttings, Bulbs, Rhizomes and Polyculture Multi-packs along with digital goods and services such as Online Courses, Webinars, eBooks, and Online Consultancy and finally we've added a Bulk Fruit and Nut Tree order form for Farms, Orchards, Nurseries, and Large Regenerative Landscape Projects. If there is anything in the store you would like to see but is not there, please let us know. We hope you enjoy the store and find something you like :) It's your purchases that keep our Project going. Thank you. Enter Our Store Here

Plants, Seeds, eBooks, Consultancy, Bulk Fruit and Nut Tree Orders for Permaculture, Polyculture, Forest Gardens and Regenerative Landscapes.

 So let's start with what's the point of recording biodiversity in the first place.

Why do we need to record biodiversity in the first place?


Our project mission is to develop and promote practices that can produce food and other resources for humans while enhancing biodiversity. To encourage biodiversity in our gardens, we include a variety of habitat into the landscape design, including native wild habitats (at various stages of succession) and cultivated habitats. The gardens are, essentially, a mosaic of habitat. Seeing as we are looking to enhance biodiversity within our gardens we must have the means to record the diversity within the various habitats. Our aim is to use this information to guide our land management practices specifically in terms of what ratio of land we should dedicate to wild native succession habitats and to what degree we can work within these habitats without disturbing the suitability of the habitat for other organisms i.e without disrupting the biodiversity. Furthermore, we would like to see how our cultivated habitat types i.e annual and perennial polyculture, compare to the wild habitat.

Various habitats within our Polyculture Market garden Plot - Aponia (Aquatic habitat not included)
See here for this gardens location on our project map. For habitat, description see below 

To do this completely we would need to include plants, fungi, animals (invertebrates, birds, mammals, reptiles, amphibians) and microbes. Quite a task by any standard and currently beyond the capacity of most people and projects, including ours. Actually, we do have good general records of plant - mammal - bird - reptile and amphibian species that inhabit our gardens (Dylan has started to add these to our website that you can find here if you are interested). For seasonal surveying and tracking changes over time, I believe that a good way to assess the general biological diversity is to study Invertebrate diversity i.e spiders, insects, bees, etc. Invertebrates largely rely on plants for food and shelter and Invertebrates are often relied upon by birds and mammals further up the food chain as they make up a significant portion of the larger animal's diet. It seems that within our environment at least when you have high levels of invertebrate diversity you will likely have high levels of plant and larger animal (vertebrate) diversity too.

Just a few of the organisms that inhabit our gardens 

As a side note, I believe strongly that a global standard for accurately recording and accounting for biodiversity is probably the most important factor for transitioning into regenerative agriculture and without this standard, regenerative agriculture will most probably remain a trendy, marginal application meeting only a tiny percentage of global food demand. With a global biodiversity recording and accounting standard established it can be used across the planet to provide incentives for activities that are enhancing or at the very least sustaining biodiversity levels and withdraw incentives and issue penalties for those activities that result in lowering biodiversity. This is a huge discussion beyond the scope of this post and the development and application of such a standard is something that humans, with skills that I certainly do not possess, could develop and would involve engineering new hardware and software technologies and the coordination of a massive global academic and political collaborative effort. Certainly not beyond our collective reach but probably one of the tougher challenges of our time. 

For now, I will focus on what I can immediately do and so have aimed to develop a super simple low tech method to survey invertebrate diversity within our garden habitats. The goal of the survey is that it should be simple enough that anyone can use it and that the data collected should be good enough to draw some useful conclusions.

First, an overview of the garden where we are carrying out the Surveys.

Garden Overview


Location: Shipka, Bulgaria, Southeast Europe
​Climate: Temperate
Köppen Climate Classification - Dfc borderline Cfb
USDA Hardiness Zone: 5b (conservative) - 7a (risky)
Latitude: 42°
Elevation: 565 m
Average Annual Rainfall: 588.5 mm
Prevailing Wind: NW & NE
Garden Name: Aponia - Polyculture Market Garden
Garden Location on our Project Map - See here 


Within this garden, we have identified a number of pre-existing habitats and have created some habitats. What follows is a description of those habitat types within the garden.


Habitat Types 


Habitat types refer to distinctly different regions within an area and in this case, are determined by the composition and age of the plant species within those areas. We have identified 6  habitat types within this garden that fall under the following  categories - Wild HabitatSemi Wild Habitat, Semi Cultivated Habitat, and Cultivated Habitat.

Wild Habitat Type
Late Scrub
Early Scrub

Semi Wild Habitat Type 
Mixed Species Meadow

Semi Cultivated Habitat Type
Mixed Species Hedgerow

Cultivated Habitat Type
Perennial Polyculture
Annual Polyculture

It should be noted that the cultivated habitat types as presented above were abandoned horticultural land and were heavily grazed by tethered horses before we started the development of the garden. This land, if left unattended, would succeed to a habitat very similar to the other habitats on the site namely - Mixed Species Meadow to Early Scrub to Late Scrub and would eventually form Woodland. When working with habitat types within your landscape it's important to have a good understanding of the successional pathway of the vegetation in order to properly appreciate the dynamics of the land and the species that inhabit each successional stage. This information will help you manage the land, specifically the potential for biodiversity, properly.
An excellent classification system for habitat type has been developed The UK Habitat Classification and can be downloaded from the bottom of their homepage hereOur classification system follows this broadly but I have made some adaptions to make it more relevant to our polyculture design, implementation, and management strategy. 

The map below shows these various habitat types within our 8-year-old Market Garden, Aponia.



Habitat Type Detail


The following information only includes a sample of the diversity of plant species within each habitat for the month that we carried out the survey i.e August. We intend to make a full record of all the species in each habitat across the season (to account for the seasonal succession of annual and ephemeral species) next year during our Polyculture Study 2020 and provide labeled illustrations of the placement of plants within the cultivated habitats.


_________________________________________________________________________________________________



_________________________________________________________________________________________________




_________________________________________________________________________________________________




_________________________________________________________________________________________________




_________________________________________________________________________________________________





Micro habitat


Our garden designs also include a variety of microhabitats such as rock piles, small and large ponds, gravel pathways, stick piles, rotten log piles, helping mats, tree stumps. These are often placed within a variety of habitat types and are not considered in the survey. A survey of our microhabitats will make a good continuation of this study for the future. 

Micro habitat from the gardens 

You will find a full education on integrating and managing habitat in your garden/farm/landscape on our Polyculture Design -  Online Interactive Course -  How to Design, Build and Manage Polyculture for Regenerative Landscapes, Gardens and Farms.  We have multiple sessions during the course dedicated to habitat and cover extensively and coherently how to identify habitat types on your land. We will also cover ecological succession, how to identify the typical flora and fauna species of your habitat, how to make habitat maps, how to develop, maintain and manage habitat, and look at the productive potential of each habitat. We encourage you to bring your own garden/land/farm plots into the course for discussion. Registration is now open. We're looking forward to it!

Polyculture Design Online Interactive Course - How to Design, Build and Manage Polyculture for Regenerative Landscapes, Gardens and Farms - Online Interactive Course

So now let's look at the Survey Design and how we aim to gain a measure of biodiversity within each habitat type.

Our Survey 


Each of the 6 habitat types are surveyed for the number of unique species observed in 2 pitfall traps within each habitat type and 10 canopy observations at different locations within each habitat type.  These surveys are carried out at the same time every first and second Monday and Tuesday of the months April to September over a period of 3 years.

The time and date - weather conditions (cloud cover - temperature - wind ) and rainfall received since the last survey are all recorded before we start. (rainfall received since the last survey is only recorded for weeks 2 and 3 of each month)

The Pitfall Traps


Two pitfall traps are set within each habitat type. Each trap is labeled for recording purposes. The traps are set on Monday morning, left overnight and emptied onto white trays on Tuesday morning.

The pitfall traps labeled ready to take a position in the habitats.


The number of unique species is counted within each trap and an average of the two traps per habitat is taken to provide the average number of unique species found within each habitat type. After emptying the traps, lids are placed on the jars and the survey is repeated the week after.  The below image shows the locations of the traps within each habitat type. 



Simon setting a pitfall trap


Shahara Khaleque made a couple of videos that show the habitat types and how we undertake the pitfall traps surveys.  You can find part 1 here and part 2 here. Thank you Shahara :) 

 Canopy Observations 


A 50 m trail within each habitat is determined as shown by the red dotted lines in the below image and 10 locations labeled 1-10 are fixed 5 m apart along the trail.


At each location the observer stands and observes within their 2 -3 m field of vision (without turning head) for 2 minutes -1 min standing - 1 min kneeling and records the number of unique species they can see on the plant vegetation and on the ground. 


Protocol Invertebrate Survey - Canopy Observations 

  • Find your starting mark
  • Set timer to 2 minutes
  • Face the habitat and count the number of different species* within your 2-3 m field of vision without turning head. 1-minute standing and 1-minute kneeling 
  • After 2 minutes walk to the next mark 
  • Repeat 2 to 4 until you have completed 10 surveys. 

Species you have seen in previous locations are counted again (start new species-count after every change of location)

*Different species = Do not count individuals, count visibly different species, e.g. :
3 black ants and 1 red ant = 2 species
1 big black spider and 1 small black spider, hard to say if it is young/old or male/female = 2 species
1 small spider and 1 big spider that are clearly the same species = 1 species

Flying species: Bypassing flying insects do not count. Insects hovering (to feed on nectar/pollen) or landing in your field of vision do count.

Here is Shahara taking canopy observations in the  Early Scrub Habitat 


To account for discrepancies between individuals' vision and interpretation of what should be counted as individual species we undertake the canopy survey twice with a different person counting a different habitat and rotate who does which habitat each week. 

The data for both surveys are recorded on printed sheets as seen below. If you would like copies of the sheets, contact us via the form at the end of the post.




How we process the data 

The data gathered for all of the surveys in each habitat is averaged. For example, in the Late scrub if five unique species were counted in pitfall trap 1 and three unique species counted in trap 2 the total record for pitfall traps in this habitat would be 4.  Likewise, if eight species were counted during canopy obs 1 and four species were counted during canopy obs 2 the total record for the canopy observations for this habitat would 6 species. 

We then take an average of both the pitfall trap and the canopy surveys within each habitat for the overall species diversity of each habitat type. 

Finally, the results from each month are averaged to give us a monthly average of the number of unique species in each habitat and the monthly results are averaged to give a season average for each habitat.

Hope that all makes sense 

The Results 


The below table shows the number of species we recorded from each habitat type in weeks 1 2 & 3 of our August Survey. Click on the links to see the individual records of the  Pitfall Traps and Canopy Obs for Week 1, Week 2 and Week 3.

Weeks 1-3 - Results Summary - Based on the average number of unique species counted in Pitfall and Observations
Week 1 - 1 day after significant rainfall Week 2 - 8 days after rainfall Week 3 - 15 days after rainfall
Rank HabitatNumber of Species Rank HabitatNumber of Species Rank HabitatNumber of Species
1Annual Polyculture 7.5751Annual Polyculture 3.7751Annual Polyculture 3.825
2Perennial Polyculture 6.52Mixed Species
Meadow
3.4252Mixed Species
Meadow
3.475
3Mixed Species
Meadow
5.83Early Scrub2.93Early Scrub3
4Mixed Species
Hedgerow
4.5754Perennial Polyculture 2.5254Perennial Polyculture 2.3
5Early Scrub4.25Mixed Species
Hedgerow
2.25Mixed Species
Hedgerow
1.875
6Late Scrub1.856Late Scrub1.76Late Scrub1.575


The August survey revealed that the Annual Polyculture was the habitat that showed the highest levels of unique invertebrate diversity and that Late Scrub showed the lowest levels of diversity.

Total - Average for each habitat (rounded up)
Rank HabitatNumber of Species
1Annual Polyculture 5.0
2Mixed Species
Meadow
4.2
3Perennial Polyculture 3.8
4Early Scrub3.4
5Mixed Species
Hedgerow
2.9
6Late Scrub1.7


Table showing the Number of unique species recorded within each Habitat Type


It's obviously too early to draw any conclusions based on 1 month of surveying but it looks like a promising start for our cultivated habitats. I think a significant part of the reason why invertebrate diversity was higher in the cultivated areas is that they are irrigated at least bi-monthly and water is probably the single most important factor concerning biodiversity especially the ground invertebrates. I expect that the early spring surveys will tell a different story with the abundant rainfall bringing life to the Scrub areas. The mixed-species meadow results were as expected and even without irrigation were teaming with flying insects taking advantage of the pollen and nectar resources on offer.

Shortcomings of the Surveys 


Our aim is to keep the survey as simple and replicable as possible without sacrificing the validity of the data. It seems to me that the barriers to entry for the majority of people when carrying out such a survey will be costs, expertise and time. I believe we have certainly addressed the cost and expertise barriers with the design of this survey and have reduced the amount of time needed to carry out the survey to something that is quite manageable providing you have a small team of 4- 6 people that are willing to give 40 minutes or so of their time 12 times a year and you are prepared to co-ordinate the group and process the data. (I've designed the sheets to do the math and punch out the results so all you need to do is enter the data). It's also possible for one person to complete the survey alone but it's almost certainly going to be tedious. Of course, surveying six habitats is not necessary and you could carry out the survey on however many you may have. Let's have a look at the shortcomings of the survey.

Here are the main shortcomings we have identified so far. If you can see more please do let us know and better still provide a solution that fits within the aim of the survey design. 

  • Perhaps that biggest shortcoming is that we do not gather information about the species. For future surveys we will develop a simple category ID list for i.e ants - bees - winged insect - snail - slug - beetle, etc. based on the most common species in order to have a better understanding of the organisms within each habitat and hopefully to identify how these organisms relate to productive capacity i.e pests, borgs (beneficial organisms), neutrals. 
  • As we are not identifying the species and have limited knowledge of entomology we may be counting unique species when in fact they are male or female, larvae/adult or at different instar stages. I expect reliable identification apps for invertebrates will be available in the not too distant future, at least for identification to the group level which can be very helpful for our purposes.
  • Because we are not using ethanol in the pitfall traps (commonly used to kill what falls in the traps), it's possible that predators may fall in and eat prey species before we can count them.
  • The canopy observations do not account for nocturnal invertebrates
  • The canopy observations from the habitat types with tall shrubs and trees do not account for invertebrates in the higher canopy. We could use a "beating tray" observation for this but for some of the habitat such as early scrub and hedgerow, it will be difficult to set this up. 
  • It could be misleading to think that just because some of the wild native habitats have lower invertebrate diversity that it is of lower value as in some cases uniformity of habitat type, although,  may not support a wide range of invertebrate diversity could be essential for certain mammals or bird that may only inhabit the area at certain intervals of the year. More study and understanding of how different organisms relate to the habitat type is required before making decisions on altering the habitat.
  • Obviously, the biodiversity metric alone cannot be used to signify environmental health. Soil health - water quality - air quality and the productive capacity in terms of meeting human needs and the stability/resiliency of the state should also be considered
 I've really enjoyed thinking about this survey and carrying it out and hope that we have managed to at least catch a glimpse of the diversity within our garden habitats and look forward to gathering a full season of data next year and beyond. If you have any suggestions on how we can improve the survey please do let us know and if you would like to try the survey yourself, send us an email and  I'll send you the record-keeping templates and protocols. You can find the complete records of the survey along with protocols, maps and habitat types here. You can access the different sheets via the blue tabs at the top of the sheet.  


If you would like news from our project including updates on the surveys, enter your email below and hit subscribe 




Please Consider Supporting Our Efforts 


As our project grows so does our desire to provide better quality information. Our overheads and demands on our time also grow along with our development and this presents a challenge for us to maintain the project and activities. We do not receive any government, institutional or NGO funding for our project and rely on revenue from sales of our courses, plants, consultancy, and design work along with the support of our amazing volunteers to develop and maintain our project and are very grateful for this. So please consider joining us for a course or event, purchasing products and services from our online store or plants from our bio nursery, participating in our online educational platforms and support the project while we support you.  You can also support us directly with a one-time donation or become a sponsor of our project providing monthly support. With your support, we will continue to improve on producing quality information and data for the community, building a world-class demonstration garden and progress on our mission to develop and promote practices that can produce food and other resources for humans while enhancing biodiversity.



We also accept donations via bank transfer in USD - EURO - GBP - AUD - NZD  - please email for account details

 and via peer to peer distributed ledgers - BTC - ETH



If you are not in a financial position to purchase our products and services or donate please comment, like and share our work. This will helps us spread our work further afield and much appreciated.


Thank you to all the people that have already donated to our project and to our customers, friends, family, and volunteers that make it all possible and thank you to  Chris Kirby Lambert and Peter Alfrey for carrying out invertebrates surveys in the past and helping us develop our understanding of invertebrate diversity within the gardens. You can find Chris's protocol and results here and Peter's observations here.  Special thanks go to Simon Leupi and Eva Goldmann for writing the protocol for the canopy observation survey and for your help and feedback on the design of the survey and thank you to the polyculture study crew 2020 for carrying out the first season of the surveys and counting all those bugs :)

--------------------------------------------------------------------------------------------------------------------------

Upcoming Forest Garden Courses 


If you would like to create a forest garden and gain some practical hands-on experience come and join us for our Desing and Build a Forest Garden Course. We'll be covering site surveying, landscape design software, installing access, beds, irrigation channels, planting tree, shrub, herb and ground layers, and wildlife ponds. All in 3 days! And plenty of follow up material to take away with you to digest slowly.

Design and Build - Forest Garden Course  - Regenerative Landscape Design Course

Registration for our course is now open with a 15% discount on accommodation and food fees when you register as a group (2 or more). You can also take advantage of early booking discounts if you book 3 months before the course starts.


----------------------------------------------------------------------------------------------------------------------

Would you like to be involved in the project next season?  1-6 month placements on our polyculture study are now open. 


Permaculture and Regenerative Design Internships


--------------------------------------------------------------------------------------------------------------------------




If you appreciate the work we are doing you can show your support in several ways.

  • Comment, like and share our content on social media.

 


--------------------------------------------------------------------------------------------------------------------------

We offer a diversity of plants and seeds for permaculture, forest gardens and regenerative landscapes including a range of fruit and nut cultivars. We Deliver all over Europe from Nov - March. - Give a happy plant a happy home :)


Our Bio-Nursery - Permaculture/Polyculture/ Regenerative Landscape Plants 


--------------------------------------------------------------------------------------------------------------------------

Design and Create Webinars - Forest Gardens, Urban Gardens, Permaculture, Regenerative Farming   


We're hosting a range of online learning sessions including how to create habitat to enhance biodiversity, how to design and build a forest garden, polyculture design software tutorials, regenerative farm, and landscape design, urban gardening and much more. If you would like to be notified when our next sessions are coming up please add your email below and hit subscribe and we'll be in touch.




You can also register for our online training, services, and products directly here.