Centaurea macrocephala
(Giant knapweed)
A splendid plant that produces sturdy upright stems topped with a fluffy bright yellow thistle-like knob that sits on a basket of paper brown bracts. Long, soft green leaves are carried up the stems. A long-lived plant that flowers for ages.
A splendid plant that produces sturdy upright stems topped with a fluffy bright yellow thistle-like knob that sits on a basket of paper brown bracts. Long, soft green leaves are carried up the stems. A long-lived plant that flowers for ages.
Wildlife Friendly
Suitable for cutting
Upright plant
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Info
Colour: Yellow
Flowers: June, July, August, and September
Height x Spread: 120cm x 90cm
Soil: Well-drained
How Much Sun: Sun/Partial Shade
Hardy to -10 degrees and more, the leaves remain throughout the year with new ones replacing older leaves in spring. Cut back in spring to tidy up the plant. Needs a well-drained soil that does not dry out, but is not too wet. Can be slow to establish, but when established will live for years without requiring any division.
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