Plant Profile: Knapweed (Centaurea macrocephala)
Karen Also known as hardheads, this vigorous perennial is native to the Caucasus and a member of the aster family, Asteraceae, that also includes daisy, yarrow, and lettuce. A relative of…
Perennial Cornflowers (Centaureas) for the Garden
The genus, Centaurea, belong to the aster family, Asteracea, and contains about five hundred species and including both annuals and perennials that are useful garden plants. They can all be…