Greater Knapweed Seeds (Centaurea nigra)

A native perennial, common on dry grassland, roadsides and hedgerows, especially on chalky soils. Reddish purple thistle-like flowers on long stalks which are very attractive to butterflies and bees.

Good for: Bees and Butterflies 

Height: 30-90cm (8-36in)

Prefers: Full sun on well drained soil

Flowers: Jul - Sep

Seeds per gram: 150