This blue-flowering shrub lends color and texture during the hottest days of summer and into early fall. Heat- and drought-tolerant, chastetree grows 5-8 feet tall and wide in full sun with a dense, twiggy habit. Loose clusters of small blue flowers are borne in showy slender spikes at the end of branches, and are set off by the narrow, dark gray-green palmate leaves. Leafs out late in spring, and can be cut back severely every year like a buddleia, if desired, as it blooms on new wood. Variety latifolia is hardier and more vigorous than the species. Has been used since the time of the ancient Greeks for a variety of medicinal purposes. Zone 6. 3 gallon. shrub08-12 GO TO BOTANIC GARDEN WEBSITE Copyright - 2008 Botanic Garden of Western Pennsylvania