Centaurea dealbata is a clump45forming perennial cornflower commonly known as bachelors buttons it bears an abundance of lavender45pink flowers from midsummer irresistible to butterflies and pollinating insects centaurea dealbata quickly forms dense clumps of large ornately cut foliage planted en masse they knit together to form fabulous swathes of ground cover a fuss45free perennial thats perfect for herbaceous borders cottage gardens and wildlife areas height 90cm 4036