Plant Base Online (beta)
common name: Knapweed, Woad-leaved Centaurea
synonyms: Chartolepis glastifolia
growth rate: medium
growth habit: clump
leaf colour: green
flower colour: yellow
fruit colour: brown
main season: Summer
preferred soil pH: neutral-alkaline
minimum temp: -29°C
USDA zone: 5 to 8
Tall, clump forming perennial. Elliptic to lanceolate mid-green leaves on erect stems. Large bright yellow flowerheads with white, papery involucral bracts.
By seed or division.
From Eastern Europe, Turkey and Central Asia to Siberia.