5g, 10g, 25g, 50g, 100g
£4.99 – £37.99
Also known as black knapweed, this sometimes hairy perennial is a firm favourite with the insects. The brush-like flower heads are made up of reddish purple florets with a swollen base covered in brown bracts. Flowering from June until September, this plant prefers grasslands and meadows, often covering large areas.
Sowing rate: 1-2g per m2
Recommended sowing times: March-May, August-October
RHS plants for pollinators