Common Knapweed

Centaurea nigra

Lesser Knapweed, Hardheads, Bell Weed, Black Centaury, Black Knapweed, Bowl Weed, Bull Weed, Button Weed, Churl's Head, Club Weed, Crop Weed, Hard Weed, Horse Knops, Iron Hard, Iron Heads, Iron Weed, Knob Weed, Knot Weed, Loggerheads, Spanish Buttons, Sweeps, Tassel, Black Starthistle

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Centaurea nigra, photographed on Crock Point, North Devon, on the South West Coast Path.
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Planning

Flowering time

Summer

Special features

Attracts butterflies

Special features

Origin

Europe, Eurasia

Environment

Light

Full Sun, Partial Shade, Partial Sun

Soil moisture

Moist

Soil type

Chalk, Clay, Loam, Sand

Soil PH preference

Acid, Alkaline, Neutral

Frost hardiness

Hardy

Personality

Family

Asteraceae