Centaurea Macrocephala (Knapweed) – 2 litre tall pot

A very long name for our second knapweed.  A magnificent plant, this time from the US.  Growing 3-4 feet this plant produces large Scottish thistle like flowers in golden yellow, up to 4 inches across.   The leaves are attractive and they look wonderful in floral arrangements.  I have seen 2 others specimens of this perennial in 25 years – it is listed by the RHS as garden worthy but doesn’t seem to be in production.  So here they are Rare and Unusual, the roots are medicinal and they are the most glorious of garden plants.