Heptacodium miconioides (Seven-son flower)

This large, fast-growing tree has droopy leaves that stay sunny yellow from spring until frost, spiny shoots, and fragrant white flowers in late spring and early summer on pendent racemes. The flowers are followed by smooth brown seed pods that are also interesting. 'Frisia' is one of the cultivars that is grown more for foliage than for its flowers and it does not flower as freely as the species.

Blackhaw Viburnum is a large shrub or small tree with clusters of creamy white flowers followed by pink-rose berries, which birds love to eat. Its distinctive bronze-green foliage on reddish purple stems turns blue-black in the fall. Blackhaw grows to 12 to 15 feet high and 8 to12 feet wide.

Sourwood, the lone species of the genus, is found in woodlands and along streams of eastern North America. This plant (named for the sour taste of its leaves) forms a pyramidal tree to 30 feet tall, with canoe-shaped, glossy leaves that turn vivid maroon, yellow, or purple in autumn. In late summer, its delicate panicles of fragrant, urn-shaped flowers spray forward, decorating the tree in white. The blossoms, which resemble lily-of-the-valley, are followed by yellowish seed capsules that turn brown and persist into winter. It makes an outstanding specimen both for a prominent position and also for a naturalized setting.

Yellowwood is a vase-shaped spreading tree with dark green foliage that turns a delicate yellow or orange in the fall and smooth light gray bark. Breathtaking, pendulous, foot-long, wisteria-like clusters of fragrant white flowers appear in late spring and early summer, often in alternate years.