Vitex agnus-castus - Chastetree
Family - Verbenaceae
Size - 15 to 18 feet in height; arching branches with rounded canopy giving an equal spread. Medium rate of growth. Commonly used as a multistemmed tree.
Foliage - Palmately compound, leaves are straplike, 3 to 3 1/2 inches in length; approximately 1/2 inch wide with a distinct midrib. Summer color is a silvery-green. No real Fall color.
Flower/Fruit/Seed - Flowers are blue-violet spikes, about 6 - 12 inches in length and 1 1/2 inches wide, very showy. Seeds are clusters of 1/8" berries, silvery-gray in color, slightly fragrant.
Bark - Gray, smooth. On older trees becoming more blocky.
Pests and Diseases - Nothing serious
Landscape Use - Can be used as a multistemmed tree when limbed up or as a large shrub in mixed plantings. Casts light shade, giving use as a patio tree and allowing other herbaceous plants or groundcovers to be grown underneath it.
Performance - 10 The hotter the better for this plant. A lover of heat and humid conditions, it thrives in full sun with adequate moisture. Does well in heavy clays. Easy to root from cuttings or seed. The cultivar 'Alba' has white flowers, 'Rosea' has pink flowers.