Common knapweed
Botanical name: Centaurea nigra
Folk names: Hardheads
Type: Perennial
Wildlife: Nectar-rich flowers for butterflies, bumblebees and hoverflies. Seeds for birds.
Flowers: June to July
Decorative merit: Mauve-pink, small thistle-like flowers on branching stems that form a clump over time.
Where: Sunny wild patch, mini meadow or middle of border where other plants can prop up its stems. Drought-tolerant once established. Will tolerate some shade.
Folklore: Petals were picked one by one for love-divination. Flower of the centaurs: mythological, benevolent half-man, half-horse creatures of the afterlife.
Daisy family relative.
Donate seeds to Exeter Seed Bank