Perovskia atriplicifolia
Shrub-like plant developing a woody character with silvery aromatic leaves. Offers great mid – late season show of lavender-blue flower spikes which persist for six weeks or more from July-Sept. Best results are obtained in full sun and well-drained soil. Heat and drought tolerant. Grows 3-4′ high by 2-4′ wide. Plants respond to a hard cutting-back in late spring and another shearing in early summer to produce sturdy dense plants.