Caryopteris Clandonensis – Kew Blue is a hardy perennial with fragrant foliage. It has a flowering season of late summer to mid autumn long stocks of blue/violet flowers which attract bees and butterflies alike. It is easy to grow and ideal for hot sunny borders. Cut them back in early spring and grow them in moist type of soils as long as it is well-drained. Propagate through cuttings in early spring or late summer.