Perennial
Centaurea nigra - Common Knapweed or lesser knapweed
Hgt 30 - 180cm Flowers June to September
Reddish flowers on a solitary knobbled flower head. A flower of the old meadows. Found in dry and damp grasslands, sand dunes and old meadows which are few and far between nowadays. Approx 425 seeds per gram

Sowing time for wildflowers is all year round with best results sowing either March to early May, or from August to September.