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Summer Sown Game Cover Seed Crops

Cover crops for game and forage cover. Buy Online or Call 0800 883 0169 for Advice. Boston Seeds are wholesale online seed suppliers for Private Individuals, Businesses and Farming Groups.

A range of items and mixtures that can be sown during the summer months - ideal for areas that may have failed due to establishment problems or poor spring weather. 


Click here for advice on game cover seed and sowing guidelines.  

CSS10/AS Wild Bird Mixture - Autumn Sown

Suitable for sowing in areas where spring planting has been unsuccessful. Provides a vital food source for farmland birds.


  • This option will provide important food resources for farmland birds, it is 
  • Autumn sown - one year mixture
  • Suitable for Entry Level Stewardship (ELS): EF2, EJ13
  • Contains: 40% Winter Triticale, 20% Winter Barley, 20% Common Vetch, 10% Forage Rape, 10% White Mustard
  •  Sow minimum 50kg/ha. Pack size: 20 kg

Boost Late Game Cover Mixture

A fast growing, quick to establish, frost hardy crop.Ideal to sow in late summer or early autumn to provide cover that will last throughout the winter.

  • Rapid growing catch crop
  • Excellent as a "rescue" mixture for patching failed crops
  • Ideal for when a late sown cover crop is required
  • Includes: Texsel Greens, Hybrid Brassica, Fodder Radish, Brown Mustard
  • Sowing rate: 2.5 kg per acre. Pack size: 5kg

Brown Mustard Game Cover - Vittasso Seed

Vittasso Brown Mustard is a new, unique and highly versatile game cover crop. It is is easy to establish, quick growing and winter hardy.
  • Sow from late July onwards to produce a dense, leafy canopy
  • Winter-hardy, easy to establish, cost effective
  • Can be sown as a rescue crop for failed spring sowings
  • Can grow up to 1.5 metres dependent on when sown
  • Sowing rate: 2kg per acre  (5kg/ha)

Goldeneye Kale Seed

Goldeneye Kale is a giant type kale especially bred for the game cover market, selected for the optimum combination of height and leaf production. 

  • It has a leafy top, strong stem, good winter hardiness and good field tolerance of disease, making it the ideal choice for game cover usage
  • Goldeneye achieves a higher vigour score than Caledonian kale and better club root tolerance.
  • Untreated seed 
  • Sowing rate: 2kg per acre. Pack Size: 2kg

Gruner Angeliter Kale Seed

A very tall variety with excellent winter hardiness. A branching, umbrella shaped canopy creates plenty of room underneath for pheasants and partridges.
  • A very high yielding variety, good winter hardiness and excellent feeding quality
  • Fresh yields 15% higher than Caledonian Kale and 10% higher than Bittern
  • Has been tried and tested for many years and is still very popular today
  • Untreated seed 
  • Sowing rate: 2kg per acre. Pack Size: 2kg

Kwik Fix Game Cover Mixture

The name says it all! Kwik Fix provides rapid cover for late sown or for patching failed spring sown game cover crops.
  • Ideal mixture to replace or patch failed spring game cover.
  • A unique combination of the fastest growing game cover species.
  • Can provide cover up until Christmas.
  • 80% Fodder Radish, 20% White Mustard
  • Sowing rate: 5 kg per acre. Pack size: 5kg.

Late Game Cover Mixture

A combination of four rapidly establishing species to give season long cover. Will provide cover of 2-3 feet in height.
  • A versatile and easy cover to establish in all areas.
  • A rapidly establishing and maturing mixture providing winter cover.
  • Used as a patching crop when spring crops fail, will tolerate drought conditions.
  • 60% Forage rape, 30% Stubble Turnips, 7% White Mustard, 3% Fodder Radish.
  • Sowing rate: 5 kg per acre.  Pack size: 5kg.

Reed Canary Grass Seed

Reed Canary Grass (Phalaris arundinacea) is similar to Canary Grass (aquatica) however it is much hardier and better suited to more exposed northern sites.

  • A perennial species which can last for 10 years
  • Suitable for exposed northern sites - very good frost and winter hardiness
  • Strong stems and thick leaves provide reliable cover for ground nesting birds
  • Similar characteristics to conventional canary grass with improved hardiness 
  • Sowing rate: 2.5kg per acre Pack Size: 2.5kg

ROMESA Fodder Radish Seed (Raphanus sativus)

Fodder Radish is a quick growing cover crop which scavenges nitrogen, produces large amount of organic matter and improves soil structure.

  • Quick growing, produces high organic matter in short periods
  • Suppresses weeds and deep roots benefit soil structure
  • Ideal as a green manure crop sown in early autumn
  • Effective as a standalone green cover or in mixtures
  • Sowing rate: 15-25kg / ha

Sovereign Kale Seed

Sovereign Kale was in agronomic tests, shown to have good dry matter yields and excellent leaf-to-stem ratio, thereby increasing stock utilisation and animal performance. 
  • Successfully tested for winter hardiness and keeping ability, it has the potential to maintain good quality production over a longer usage period
  • Sovereign does not produce the large thick stems common to giant kales even when planted at lower density, therefore increasing palatability
  • Untreated seed 
  • Sowing rate: 2kg per acre. Pack Size: 2kg

Spaniel Game Cover Mixture

Spaniel is a summer sown, drought tolerant game cover mixture which is easy to establish. Combines four different seed species.

  • Drought tolerant mixture which can be sown in the summer months.
  • Can be used for patching failed spring sown crops.
  • Easy to establish, can be broadcast directly into cereal stubble.
  • Combines; Mustard, Fodder Radish, Interval Rape/Kale, Ethiopian Mustard.
  • Sowing rate: 4.5kg per acre. Pack size 4.5kg.  


Sparta Forage Rape

Sparta Forage Rape has a high protein content and high dry matter yield. Late flowering variety that will perform well whether sown for summer, autumn or winter use. 
  • Good winter hardiness
  • Clubroot tolerant
  • Sowing rate: 2.5kg per acre. Pack Size: 10kg and 25kg

Spitfire Hybrid Forage Rape

Spitfire Hybrid Forage Rape is a rape and kale hybrid, is a good companion to use with other fast establishing brassicas. A vigorous and quick growing seed mixture making it ideal for failed crops.
  • Provide cover for a whole season
  • Very vigorous and quick growing, ideal for replacing failed crops or patching
  • Good disease and bolting resistance
  • Sowing rate: 2.5kg per acre. Pack Size: 5kg and 25kg

VITTASSO Brown Mustard Seed (Brassica juncea)

Very popular for use in potato rotations to control soil borne pests and can be 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
  • Sowing Rate: 5kg / ha
  • VITTASSO Brown Mustard Brochure

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

Yellow Blossom Clover (Sweet Clover) (Melilotus officinalis)

Yellow Blossom Clover is a biennial plant that can persist for several years due to its self regenerating properties. 

  • A deep rooted legume that improves soil structure and fertility
  • Nectar rich specie which attracts pollinators to aid future crops
  • Often sown with Kale to help provide cover in the first year
  • Stems become woody in second year to help with standing
  • Sowing rate: 5kg / ha

Zoom Brassica Forage Mixture

Zoom Brassica Seed Mixture is a blend of Winfred Hybrid Brassica and Forage Rape. A vigourous and quick growing seed mixture making it ideal for failed crops.
  • Provide cover for a whole season
  • Very vigorous and quick growing, ideal for replacing failed crops or patching
  • Good disease and bolting resistance
  • Blend of 50% Winfred Hybrid Brassica and 50% Napoleon Forage Rape
  • Sowing rate: 2.5kg per acre. Pack Size: 5kg

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