Centaurea nigra

Common Names: Black knapweed, lesser knapweed, common knapweed, hardheads
Category: Plants
Sub-category: Aster family

It is a perennial herb growing up to about a 1 m in height. The leaves are up to 25 cm long, usually deeply lobed, and hairy. The lower leaves are stalked, whilst the upper ones are stalkless. The inflorescence contains a few flower heads, each a hemisphere of black or brown bristly phyllaries. The head bears many small bright purple flowers. The fruit is a tan, hairy achene 2 or 3 mm long, sometimes with a tiny, dark pappus.

Found in meadows, fields, waste areas, roadsides. Flowers July until September.

Primary Flower Color: Blue/Purple
Secondary Flower Color: Pink
Edible Notes: No available information on edibility.
Warnings: Not known to be dangerous.