SW Codes - Buffer Strips
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.

Boston Seeds are proud to supply the EnviroSeeds range for biodiversity and sustainable farming.
Use this mixture for CNUM3 (2024/2025) and NUM3 (2023) Sustainable Farming Incentive, and Countryside Stewardship AB15 (Legume Fallow), to provide an abundant supply of pollen and nectar for beneficial insects.
- Mixture also available containing grass - see CSS6/G
- Reduces flowering blackgrass and provides an abundant supply of sown pollen and nectar-rich flowers between early and late summer for the duration of the agreement.
- Use for static implementation of CNUM3 and NUM3 Legume Fallow - sow in the spring or autumn for optimum establishment
- Use for rotational implementation of CNUM3 and NUM3 Legume Fallow - sow in the autumn for optimum establishment
- Suitable for Sustainable Farming Incentive: CNUM2 CNUM3 NUM2 NUM3
- Suitable for Countryside Stewardship (CSS): AB15 GS8 SW1 SW2 SW3 SW4 WT1 WT2
- Contains: 55% Common Vetch, 12.5% Crimson Clover, 15% Red Clover, 5% Alsike Clover, 5% Sainfoin, 2.5% Birdsfoot Trefoil, 2.5% Lucerne, 2.5% Berseem Clover
- 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 CNUM3 (2024/2025) and NUM3 (2023) Sustainable Farming Incentive, and Countryside Stewardship AB15 (Legume Fallow), to provide an abundant supply of sown pollen and nectar-rich flowers between early and late summer for the duration of the agreement.
- Mixture also available without grass - see CSS6
- The inclusion of ryegrass to reduce flowering blackgrass populations (also available with Timothy or Strong Creeping Red Fescue)
- Use for static implementation of CNUM3 and NUM3 Legume Fallow - sow in the spring or autumn for optimum establishment
- Use for rotational implementation of CNUM3 and NUM3 Legume Fallow - sow in the autumn for optimum establishment
- Suitable for Sustainable Farming Incentive: CNUM2 CNUM3 NUM2 NUM3
- Suitable for Countryside Stewardship (CSS): AB15 GS8 SW1 SW2 SW3 SW4 WT1 WT2
- Contains: 40% Perennial Ryegrass, 35% Common Vetch, 5% Crimson Clover, 5% Red Clover, 5% Sainfoin, 2.5% Birdsfoot Trefoil, 2.5% Lucerne, 2.5% Alsike Clover, 2.5% Berseem Clover
- 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 CSAM3 (2024/2025) and SAM3 (2023) Sustainable Farming Incentive, and Countryside Stewardship GS4 (Herbal Leys), to establish a mixed sward of grasses, legumes, 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.
- Use for static implementation of CSAM3 and SAM3 Herbal Ley schemes
- Sow in spring or autumn for optimum establishment
- Suitable for Sustainable Farming Incentive (SFI): CSAM3 SAM3
- Suitable for Countryside Stewardship (CSS): GS1 GS4 GS8 GS14 SW1 SW2 SW3 SW4 SW7 SW8 WT1 WT2
- Contains: 40% Perennial Ryegrass, 20% Strong Creeping Red Fescue, 10% Sainfoin, 8% Meadow Fescue, 7% Timothy, 5% Smooth Stalked Meadow Grass, 5% White Clover, 2% Alsike Clover, 1.25% Lucerne, 0.5% Sheep's Burnet, 0.25% Sheep's Parsley, 0.25% Plantain, 0.25% Yarrow, 0.25% Black Medick, 0.25% Birdsfoot Trefoil
- 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 CAHL3 (2024/2025) and AHL3 (2023) Sustainable Farming Incentive and AB3 Countryside Stewardship (Grassy Field Corners), to provide nesting and foraging habitats for, insects, bumblebees, small mammals and farmland birds.
- Dense cover providing warm and dry areas for invertebrates and pollinators
- Use for static implementation of CAHL3 and AHL3 Grassy Field Corners
- Sow in spring or autumn for optimum establishment
- Suitable for Sustainable Farming Incentive (SFI): CAHL3 CAHL4 CIGL3 AHW3 AHL3 AHL4 IGL3
- 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 mixture for CAHL3 (2024/2025) and AHL3 (2023) Sustainable Farming Incentive and AB3 Countryside Stewardship (Grassy Field Corners), 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
- Use for static implementation of CAHL3 and AHL3 Grassy Field Corners
- Sow in spring or autumn for optimum establishment
- Suitable for Sustainable Farming Incentive (SFI): CAHL3 CAHL4 CIGL3 AHW3 AHL3 AHL4 IGL3
- 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 for CAHL3 (2024/2025) and AHL3 (2023) Sustainable Farming Incentive and AB3 Countryside Stewardship (Grassy Field Corners), to provide an abundance of high-value plant species, with a range of plant heights suitable for invertebrates, birds and small mammals.
- Use for static implementation of CAHL3 and AHL3 Grassy Field Corners, and WBD4 Arable reversion to grassland with low fertiliser input
- Sow in spring or autumn for optimum establishment
- Suitable for Sustainable Farming Incentive (SFI): CAHL3 CAHL4 CIGL3 AHW3 AHL3 AHL4 IGL3 WBD4
- Suitable for Countryside Stewardship (CSS): AB3 SW1 SW2 SW3 SW4 SW7 SW8 WT1 WT2
- Contains: 27% Strong Creeping Red Fescue, 17% Chewing's Fescue, 15% Meadow Fescue, 10% Hard Fescue, 10% Tall Fescue, 8% Smooth Stalked Meadow Grass, 6% Slender Creeping Red Fescue, 4% Highland Bent, 3% Smaller Cat's Tail
- Sowing rate: 20kg/ha Pack size: 20kg
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