Buffer Strips SW codes
Buffer strip mixtures from Boston Seeds to comply with Countryside Stewardship SW1 SW2 SW3 SW4 SW7 SW8. Buy online, apply for a trade account (we review all applications within one working day) or get in touch to place an order through your buying group. You can also request a catalogue to view our full range.
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Boston Seeds are proud to supply the EnviroSeeds range for biodiversity and sustainable farming.
Use this mixture for Flower-Rich Margins and Plots (AB8), to provide an abundant supply of pollen and nectar-rich flowers for pollinators and beneficial insects including bumblebees, solitary bees, butterflies, hoverflies.
- Also attractive to farmland birds
- Annual production of flowers for the length of the agreement.
- Suitable for Countryside Stewardship (CSS): AB8 GS8 GS14 SW1 SW2 SW3 SW4 SW7 SW8 WT1 WT2
- Contains: 40% Strong Creeping Red Fescue, 25% Chewings Fescue, 15% Hard Fescue, 5% Smooth Stalk Meadow Grass, 3.75% Sainfoin, 3.75% Common Vetch, 3% Crimson Clover, 2.5% Red Clover, 0.5% Birdsfoot Trefoil, 0.5% Ribwort Plantain, 0.25% Lucerne, 0.25% Alsike Clover, 0.25% Yarrow, 0.25% White Clover
- Sowing rate: 20kg/ha. Pack size: 20kg


Boston Seeds are proud to supply the EnviroSeeds range for biodiversity and sustainable farming.
Use this mixture for GS4 Countryside Stewardship (Legume and Herb-Rich Swards), to establish a mixed sward of grasses, legumes and herbs and wildflowers.
- A vigorous sward with abundant legumes and herbs, suitable for productive cattle and sheep
- Provides habitat and food for invertebrates and crop pollinators
- Improves soil structure and water infiltration.
- Suitable for Countryside Stewardship (CSS): GS1 GS4 GS8 GS14 SW1 SW2 SW3 SW4 SW7 SW8 WT1 WT2
- Contains: 40% Strong Creeping Red Fescue, 15% Perennial Ryegrass, 13% Meadow Fescue, 10% Sainfoin, 7% Timothy, 5% Smooth Stalk Meadow Grass, 5% Red Clover, 2% Alsike Clover, 1.25% Lucerne, 0.5% Sheep's Parsley, 0.5% Birdsfoot Trefoil, 0.5% Sheep’s Burnet, 0.25% Ribwort Plantain
- Sowing rate: 20kg/ha. Pack size: 20kg

Boston Seeds are proud to supply the EnviroSeeds range for biodiversity and sustainable farming.
Use this mixture for wildflower meadows, to provide rich habitat for butterflies, insects, birds & small mammals. Enhance mixture to comply with Flower-Rich Margins and Plots (AB8).
- An extended number of species of grass, legumes and wildflowers
- Can be sown on its own or with other wildflower mixtures
- Suitable for Countryside Stewardship AB8 GS4 GS8 GS14 SW1 SW2 SW3 SW4 SW7 SW8 WT1 WT2
Contains: 30% Strong Creeping Red Fescue, 10.75% Chewing's Fescue, 10% Hard Fescue, 10% Timothy, 10% Slender Creeping Red Fescue, 6% Smooth Stalk Meadow Grass, 5% Red Clover, 5% Sainfoin, 4% Sheep's Fescue, 2.5% Alsike Clover, 1.5% Ribwort Plantain, 1.5% Birdsfoot Trefoil, 0.75% Yarrow, 0.5% Meadow Foxtail, 0.5% Selfheal, 0.5% Oxeye Daisy, 0.5% Sheep's Sorrel, 0.5% Common Knapweed, 0.5% Wild Carrot - Previously known as BSWF10
- Sowing rate: 20kg/ha.

Boston Seeds are proud to supply the EnviroSeeds range for biodiversity and sustainable farming.
Use this grass-free, pure legume mixture for Two Year Sown Legume Fallow AB15 (2021 onwards).
- Mixture also available containing grass - see CSS6/21R
- Recommended for schemes that began from 2021 onwards.
- Reduces flowering blackgrass and provides an abundant supply of sown pollen and nectar-rich flowers between early and late summer in year 3 and year 5 of the agreement.
- Suitable for Countryside Stewardship (CSS): AB15 GS8 SW1 SW2 SW3 SW4 WT1 WT2
- Contains: 55% Common Vetch, 15% Red Clover, 10% Alsike Clover, 10% Lucerne, 7.5% Crimson Clover, 2.5% Birdsfoot Trefoil
- Sowing rate: 15-20kg/ha. Pack size: 20kg

Boston Seeds are proud to supply the EnviroSeeds range for biodiversity and sustainable farming.
Use this grass and legume mixture for Two Year Sown Legume Fallow Mixture AB15 (2021 onwards).
- Mixture also available without grass - see CSS6/21
- Recommended for schemes that began from 2021 onwards.
- Reduces flowering blackgrass and provides an abundant supply of sown pollen and nectar-rich flowers between early and late summer in year 3 and year 5 of the agreement.
- Suitable for Countryside Stewardship (CSS): AB15 GS8 SW1 SW2 SW3 SW4 WT1 WT2
- Contains: 40% Perennial Ryegrass, 40% Common Vetch, 5% Crimson Clover, 5% Lucerne, 5% Red Clover, 2.5% Alsike Clover, 2.5% Birdsfoot Trefoil
- Sowing rate: 15-20kg/ha. Pack size: 20kg


Boston Seeds are proud to supply the EnviroSeeds range for biodiversity and sustainable farming.
Use this mixture for Two Year Sown Legume Fallow AB15 (agreements beginning in 2020 or before):
- Recommended for schemes that began in or before 2020. For schemes in 2021 and onwards, see our CSS6/21 Two Year Sown Legume Fallow Mix
- Reduces flowering blackgrass and provides an abundant supply of sown pollen and nectar-rich flowers between early and late summer in year 3 and year 5 of the agreement.
- Suitable for Countryside Stewardship (CSS): AB15 GS8 SW1 SW2 SW3 SW4 WT1 WT2
- Contains: 66% Perennial Ryegrass, 15% Red Clover, 10% Vetch, 7% Birdsfoot Trefoil, 2% Common Knapweed
- Sowing rate: 30kg/ha. Pack size: 20kg

Boston Seeds are proud to supply the EnviroSeeds range for biodiversity and sustainable farming.
Use this mixture (including cocksfoot) for Beetle Banks AB3, to provide nesting and foraging habitats for insects, bumblebees, small mammals and some farmland birds.
- Dense, tussocky cover provides warm, dry areas for invertebrates and pollinators
- Suitable for Countryside Stewardship Scheme (CSS): AB3 SW1 SW2 SW3 SW4 WT1 WT2
- Contains: 60% Strong Creeping Red Fescue, 20% Tall Fescue, 15% Slender Creeping Red Fescue, 5% Cocksfoot
- Sowing rate: 20kg/ha. Pack size: 20kg

Boston Seeds are proud to supply the EnviroSeeds range for biodiversity and sustainable farming.
Use this mixture (without cocksfoot) for Beetle Banks AB3, to provides nesting and foraging habitats for, insects, bumblebees, small mammals and farmland birds.
- Dense cover providing warm and dry areas for invertebrates and pollinators
- Suitable for Countryside Stewardship (CSS): AB3 SW1 SW2 SW3 SW4
- Contains: 60% Strong Creeping Red Fescue, 20% Tall Fescue, 10% Hard Fescue, 10% Slender Creeping Red Fescue
- Sowing rate: 20kg/ha. Pack size: 20kg

Boston Seeds are proud to supply the EnviroSeeds range for biodiversity and sustainable farming.
Use this mix for habitat creation and compliance with AB3. This premium, species-rich grassland mix provides an abundance of high-value plant species, with a range of plant heights suitable for invertebrates, birds and small mammals.
- Low maintenance and suitable for light grazing
- Suitable for Countryside Stewardship (CSS): AB3
- Contains: 27% Strong Creeping Red Fescue, 15% Meadow Fescue, 15% Chewing's Fescue, 10% Hard Fescue, 10% Tall Fescue, 8% Smooth Stalk Meadow Grass, 6% Sheep’s Fescue, 5% Highland Bent, 4% Smaller Cat's Tail
- Sowing rate: 20kg/ha Pack size: 20kg
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