Stemmacantha centauroides

Knapweed (syn. Rhaponticum, Centaurea 'Pulchra Major')
Stemmacantha centauroides
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  • Mpp_cent-pulchra-major
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  • Mpp_centaurea-pulchra-major-buds
I absolutely love this plant, but many may find it a bit odd. Strong, upright stems are topped with fluffy, ball like flowers (larger than a golf ball, smaller than a tennis ball). These sit on a goblet of papery soft brown bracts. At the base and partway up the stems long, serrated silvery leaves provide added interest. A must for anyone who likes the unusual. Originally listed under Centaurea 'Pulchra Major' but now seems to have gain yet another title; Rhaponticum!
9cm (£6.00)?
Delivered in 7 - 10 days
£6.00  each OR £17.10 for three

Flower attributes

Colour: Lilac

Flowers: July and August


Soil: Well-drained

Planting position: Sun/Partial Shade

Height x spread: 90cm x 70cm


Rabbit Resistant

Wildlife Friendly

Care advice

Can be fussy and slow to establish. I have found it can be difficult to establish in some soil, but it has grown wonderfully in a poor, sandy very well drained soil and in our peat-free compost. Worth a go anywhere though.