SuDS 100% Wildflower Seed Mix

SuDS Mix 100% Wildflowers (JC3555) is a specialist native wildflower seed mixture designed specifically for Sustainable Drainage Systems (SuDS). Whether sown in swales, attenuation basins, rain gardens, pond margins, or other water-sensitive areas, this mix establishes a resilient, species-rich meadow that tolerates winter waterlogging and summer drought, delivering reliable ecological, visual, and hydrological performance.

The mixture combines perennial and biennial wildflowers adapted to fluctuating soil moisture, providing structural diversity, extended seasonal colour, and ecological function. Once established, JC3555 supports pollinators, invertebrates, wetland birds, and biodiversity objectives, while remaining low-maintenance and durable under variable moisture conditions.

Ideal for developers, landscape designers, BNG schemes, flood management projects, and conservation-focused SuDS initiatives, this mix ensures that water-sensitive sites provide both ecological and aesthetic value. By combining hardy native species with a strong ecological function, JC3555 delivers a long-term, low-input solution for sustainable drainage landscapes.

Features & Benefits

100% native wildflower mix for SuDS, including perennials and biennials

Tolerates winter waterlogging and summer drought

Provides seasonal colour, structural diversity, and ecological function

Supports bees, butterflies, hoverflies, wetland birds, and other wildlife

Ideal for SuDS swales, attenuation basins, rain gardens, and floodplain planting

Low-maintenance and resilient; establishes over 2–3 seasons

Contributes to BNG delivery, ecological mitigation, and wetland conservation

Applications

Developers & Civil Engineers: Water-sensitive urban design, SuDS features, flood management landscapes

Councils & Local Authorities: Public SuDS installations, parks, wetland margins, attenuation basins

Landscape Architects & Contractors: Ecological planting in infrastructure projects, urban and rural SuDS

Conservation & Ecological Projects: Biodiversity enhancement, wetland creation, low-input ecological landscapes

How to Sow & Care

Seedbed Preparation: Prepare a fine, firm seedbed free of aggressive or competitive species to ensure good seed-to-soil contact.

Sowing: Broadcast evenly at 25–35 g per m² and lightly roll or tread. Avoid burying seed too deeply.

Establishment: Expect flowering from the first year. Full species and sward diversity develop over 2–3 growing seasons.

Management: Cut lightly once or twice per year depending on design objectives. Remove arisings to prevent nutrient accumulation and maintain wildflower diversity.

Long-Term Care: Avoid fertilisers and minimise disturbance to retain species balance and ecological function.

Growing Conditions

Location: SuDS features, seasonal wet soils, pond and attenuation basin margins, damp grassland areas, urban and rural sites

Shade Tolerance: Prefers full sun to partial shade; flowering may reduce under dense shade

Soil Type: Tolerates winter waterlogging and free-draining summer soils; adapted to seasonal fluctuations and moderate drought

Soil Fertility: Low to moderate fertility ideal; fertiliser not recommended to preserve wildflower diversity

Moisture: Highly tolerant of winter waterlogging; resilient through summer dry periods once established

Flowering Time | May – September (varies by species)

Flowering Height | 20 – 150 cm depending on species and moisture conditions

Life Cycle | Perennial / Biennial mix

Sowing Rate | 2-3g per m²

Sowing Period | Spring (March–May) or Autumn (August–October)

Preferred Conditions | Water-sensitive, seasonally wet soils; full sun to partial shade; low to moderate fertility

Pollinator Friendly | Yes, supports bees, butterflies, hoverflies, and other beneficial invertebrates

Minimum Order Quantity | 10g

Ideal For | SuDS swales, attenuation basins, rain gardens, floodplain planting, BNG delivery, wetland conservation, low-input ecological landscaping