Vitex agnus-castus (Chaste tree, Monk's pepper)

Chaste tree is a southern favorite beginning to gain favor across the country. Whether left to grow as a large, multistemmed shrub or cut back annually for a more compact look, this selection is a winner. Fine, lacy leaves are glossy and green. Bright blue flower panicles begin to form in early summer and continue through the heat of the season and into fall. This is a reasonably cold-hardy, deer-resistant woody plant, and while V. agnus-castus is typically considered a Zone 7 plant, the variety latifolia can be grown in Zone 6 and even in southern areas of Zone 5.

A large shrub or small tree, Albizia julibrissin is native to Iran to Japan. It is a fast-growing plant whose seedlings can become invasive. It can be seen growing in the wild in the southeastern U.S. and California in waste places, fields, and along roads.

However, its bipinnate, ferny leaves and fluffy pink flowerheads that cover the tree in summer make it a garden-worthy plant, as do the fragrance emitted by the flowers, which attract bees. Seed pods that resemble flat beans follow the flowers and persist into winter. Still, care should be used so that seeds from garden plants can't escape into the wild.

(1 user review)

In early spring, 'Forest Pansy' awakens with a long-lasting profusion of bright purplish-pink blooms borne in clusters, before the leaves, along smooth gray branches. Its heart-shaped, blood-red leaves are finely veined and glossy when young, slowly turning a dark, purple-tinged green in full sun. Autumn foliage is a bouquet of reds, purples, oranges, and yellows. The plant's graceful branching structure stands out in winter.

(1 user review)

This cross of the European smoke bush (C. coggygria) and the American smoke tree (C. obovatus) is a gem in the garden thanks to its multiseason interest. Its iridescent spring foliage is green overlaid with red; then its large pink clouds of blooms in summer are followed by brilliant autumn foliage that ranges from red to orange. 'Grace' combines well with just about anything; asters, ornamental grasses, and Japanese maples are good places to start.