Hardheads,Knapweed. Mat-forming robust perennial with narrow mid-green leaves woolly beneath. Woolly stems carry blue flowerheads with reddish violet petals. Max Height 45cm. Max Spread 60cm. Flowers April to July. Full sun. Hardy. Water thoroughly before planting.
Centaurea montana
Mat-forming robust perennial with narrow mid-green leaves woolly beneath. Woolly stems carry blue flowerheads with reddish violet petals.
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