Clumps of grey-green trifoliate leaves topped with tall spikes of pea-like, indigo-blue blooms which develop into attractive dark grey seed pods. RHS Award of Garden Merit winner. Flowers June-July. Height 1.5m (5'); spread 1m (3'3). Supplied in a 9cm pot. Back of border variety. Adrian Bloom says.. . Cut back foliage in winter, & remember that new growth appears only in late spring. Buy any 3 perennial potted plants & get the cheapest FREE!