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Green Manuring Crops

A range of green cover crop varieties and mixtures that may be categorised as spring sown for summer usage, autumn sown for over-winter usage, intercropping and longer term fertility improvement. Green cover crops can significantly improve the output of agricultural rotations by improving the health of the soil. Certain green cover crops can also be used to help in the fight against weeds and pests, such as black-grass and beet cyst nematode.


We are also pleased to advise or quote for your own specific special mixture, call 01205 280069. 

Alsike Clover Seed

A nitrogen fixing legume which is better adapted to wet, acidic soils and cooler temperatures. Requires shallow sowing and a firm seedbed.

  • Scandinavian origin and better adapted than Red or White Clover to wet acid soils and cooler conditions
  • Growth habit similar to Red Clover
  • Lower yielding of biomass
  • Requires shallow sowing and a firm seedbed.
  • Sowing rate: 25kg per acre. Packsize: 25kg.

Black Medick (Yellow Trefoil) Seed

A low growing green cover crop which fixes nitrogen and suppresses weeds. Often sown amongst brassica crops.
  • A biennial/annual legume that gives good yields even on thin calcareous soils.
  • May be grazed by sheep, main use is as a green manure undersown in cereals.
  • Low growth habit makes it useful in vegetable intercropping systems.
  • Sowing rate: 5kg per acre. Pack size: 5kg

Borage Seed (Agricultural)

Borage is a nectar rich, annual flower which produces abundant amounts of easily broken down material that can be incorporated into the soil.
  • Growing to a height of 2-3 feet with bright blue flowers.
  • Provides an abundant source of easily digestible material that will readily break down when incorporated into the soil.
  • Sowing rate: 12.5kg / ha

Buckwheat Seed

Buckwheat is a quick growing crop, highly attractive to pheasants, partridge and deer. Provides both cover and a source of food.

  • A nectar rich species attracting insects. 
  • Can be sown alongside flight ponds to attract ducks and geese.
  • Creates a dense canopy which aids weed suppression.
  • Sow from May onwards once all risk of frost has passed.
  • Sowing rate: 70kg / ha

    Chicory Seed (Agricultural)

    Chicory has a very deep tap root, making it suitable for sowing on dry soils. Often sown alongside a grass and clover mix to improve the soil structure and health.
    • Perennial (Cichorium intibus), pale blue flower - 3-5 cms across, light/chalky soils
    • Flowers: July - October
    • Height: Can grow to 1.5m
    • Sowing Rate: 5kg per acre. Pack size: 5kg. 


    Cocksfoot is a perennial grass which forms large tufts if it is left to grow tall.. Often used for undersowing into winter wheat.

    • Used as an under-sown species at very low seed rates into winter wheat. 
    • It acts as an excellent soil improver on soils prone to summer drought. 
    • Over a number of years it will provide a beneficial source of high fibrous root development which will help improve soil structure and composition. 
    • Sowing rate: 5kg per acre. Packsize: 20kg untreated.

    Crimson Clover Seed

    Crimson clover is a brightly coloured legume which attracts a large numbers of insects. Tolerant of poor soils provided they are alkaline and free draining. 
    • Excellent weed suppressor, fast establishing and good nitrogen fixer
    • Lower yields of biomass than Red Clover but has much shorter growing period
    • Biomass degrades very quickly in the soil
    • Will over-winter in Southern England for autumn sowing and spring incorporation
    • Sowing rate: 15kg / ha

    Deep Root Radish Seed

    Tillage radish is a deep rooted variety which helps to improve the health and structure of the soil. Broad canopy suppresses weeds whilst large tap root improves soil structure. 

    • Large tap root breaks through soil pans and adds biomass to soil.
    • Tap root grows up to 35cm long and 2-5cm in width.
    • Sowing period: July until end of August.
    • Sowing rate: 10kg / ha. 

    Fodder Radish Seed

    Fodder Radish is a quick growing game cover crop. It is commonly used as a replacement for failed spring sown crops. 
    • A fast growing cover crop, ideal for failed spring crops.
    • Speed of establishment aids weed suppression.
    • Ideal as a green manure crop. 
    • If sown July will be ready to provide cover within 6 to 8 weeks.
    • Sowing rate: 15kg / ha. 

    Forage Rape Seed

    Forage Rape is a fast growing and high yielding crop. Commonly used for forage and as a game cover crop.
    • Rapid establishment, medium-to-tall, palatable grazing.
    • Popular for use as a rescue cover crop.
    • Largely unaffected by frost and wet weather.
    • Good general disease resistance.
    • Sowing rate: 4kg per acre. Pack size: 10kg, 25kg.

    Forage Rye Seed

    Forage Rye (or Grazing Rye) can be used for green manure, early spring sheep and cattle grazing or making silage. 
    • Produces large amounts of green material.
    • Excellent nitrogen scavenger, very hardy.
    • Grows well on light, sandy, free draining soils.
    • Sow in autumn for incorporation and use in the spring.
    • Sowing rate: 150kg / ha

    Italian Ryegrass Seed

    Italian ryegrass is quick to establish and produces high yields. Ideal short term mixture for anaerobic digestion.
    • An erect biennial/short lived perennial form best suited to short term leys
    • Rapid establishment, higher yielding than perennial ryegrass
    • Excellent for a green manure crop or for 'mopping up' excess nitrogen
    • Often sown after potatoes and maize in the autumn
    • Sowing rate: 35kg / ha

    Lucerne Seed

    Lucerne is a longer term perennial clover which fixes large amounts of nitrogen from the air to enrich the soil.
    • A longer term perennial clover which fixes large quantities of nitrogen.
    • Widely used for green manure.
    • Has a large tap root and is ideally suited to light and chalky soils as well as dry climates.
    • Seed is supplied inoculated with rhizobium bacteria.
    • Sowing rate: 25kg / ha

    Oil Radish Seed (Nematode Resistant)

    Oil (Fodder) Radish is one of the most popular green cover crops due to their deep root structure and ability to control soil borne pests. 

    • Type 1 reduces upwards of 90% of Beet Cyst Nematode in testing.
    • Type 2 reduces 75-90% of Beet Cyst Nematode in testing.
    • Fast and easy to establish.
    • Sowing rate: 20kg / ha

    Persian Clover Seed

    Red clover is an is an annual which is widely used across Europe and is useful as a Forage Plant.

    • Can be sown in the spring for grazing and cutting the same year or can be autumn sown, growing in the spring.
    • Compatible in seed mixtures with grass and legumes
    • Sowing rate: 7-10kg / ha Packsize: 25kg

    Phacelia Seed

    Phacelia is a prolific seed producer, very fast to establish and an excellent source of pollen and nectar. This makes it attractive to both insects and wild birds.
    • A popular green manure crop which is an excellent weed suppressor. 
    • Establishes fast and matures within 10-12 weeks.
    • Produces a large root mass making the plant an excellent soil improver.
    • Will produce a multitude of flowers - loved by bees and other insects.
    • Sowing rate: 5/8kg / ha

    Red Clover Seed

    Red clover is an aggressive, nitrogen fixing plant which is an effective weed suppressor. Good for improving and aerating soil structure.
    • A shorter term alternative to White Clover, will usually last for two years 
    • An aggressive plant, providing a large mass of green vegetation
    • Fixes large amounts of atmospheric nitrogen which is released once ploughed in
    • The plant has a large tap root which penetrates deep into the ground, improving soil structure
    • Sowing rate: 15kg / ha

    SCALA Brown Mustard Seeds

    SCALA is the choice brown mustard for a frost tolerant cover crop to suppress weeds, pump water and improve soil structure.  
    • Strong early vigour and medium maturity 
    • Distinguished by its superior autumn growth and winter hardiness
    • Strong root development to pump water and improve the soil
    • Active against PCN, Pythium, Rhizoctonia and Verticillium when used for biofumigation 
    • Sowing rate: 5kg/ha 

    Vetch Seed

    Vetches are a nitrogen fixing legume which due to its larger seed size can be sown later in the year than most other legumes.
    • Fast establishing legume which is an excellent weed suppressor .
    • Vetches provide large amounts of nitrogen which is available to the following crop.
    • A vigorous trailing/climbing annual legume that does best on dry, alkaline soils.
    • Commonly sown as a mixture with Forage Rye.
    • Sowing rate: 50kg / ha

    VITTASSO Brown Mustard Seed

    Very popular for use in potato rotations to control soil borne pests. Crop must be chopped at flowering and incorporated into moist soil to maximise biofumigation.
    • Green manure crop with biofumigant properties
    • Winter-hardy, easy to establish, cost effective
    • Reduces wireworm and PCN populations and their effect on potatoes
    • Suppresses Verticillium wilt and Sclerotinia in potato production
    • VITTASSO Brown Mustard Brochure
    • Sowing Rate: 5kg / ha

    Westerwolds Ryegrass Seed

    Westerwolds is an annual form of ryegrass which is noted for its ability to produce a high volume of biomass in a short period of time. 

    • Fast growing, short term crop. Frequently sown following maize.
    • Excellent for 'mopping up' excess nitrogen in the soil.
    • Suitable for silage, hay production and grazing.
    • Can be sown from spring through to autumn.
    • Sowing rate: 14kg per acre. 

    White Clover Seed

    White clover is widely used throughout the UK. It is an important element of many silage and grazing mixtures, thanks to its persistence and nitrogen fixing properties.
    • A longer term and more persistent option than Red Clover
    • Very palatable for livestock and high in protein 
    • Continued defoliation stimulates root growth and nitrogen fixation.
    • Prefers to be shallow sown into a fine, firm seed bed.
    • Sowing rate: 2-3kg per acre. Pack Size: 2kg. 

    White Mustard Seed

    White Mustard is an ever popular choice for game cover plots. Very easy to establish and will grow rapidly providing cover until the first winter frosts. 
    • Can be sown alone or as a companion to other species.
    • Ideal for early cover, killed off by frost will create shelter for birds.
    • Quick growing - ideal for patching failed spring cover crops.
    • Popular as a green manure crop, fast growing and suppresses weeds.
    • Suitable for Countryside Stewardship (CSS): AB2 
    • Sowing rate: 15kg / ha. 

    White Mustard Seed (Type 2 Nematode Resistant)

    White mustard is widely used as a cost effective and fast establishing catch crop following the harvest of cereals. Type 2 varieties are can be used to assist in the control of Beet Cyst Nematode. 

    • Type 2 variety which reduces 75-90% of Beet Cyst Nematode in testing.
    • Fast and easy to establish. Suppresses weeds.
    • Sowing rate: 25kg per hectare. Pack size: 25kg.

    Yellow Blossom Clover (Sweet Clover)

    Yellow Blossom Clover is a biennial plant that can persist for several years due to its self regenerating properties. 
    • Nectar rich specie which will attract plenty of insects and in turn game birds.
    • Often sown with Kale to help provide cover in the first year.
    • Stems become woody in second year to help with standing.
    • Being leguminous and deep rooted is valuable for improving soil structure and fertility.
    • Sowing rate: 2.5kg per acre. Pack size: 5kg. 

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