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Zones 1-10, 14-17, 26, 28-45
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Rhus glabra

Smooth Sumac
Anacardiaceae
Deciduous, Shrubs, Trees

RHUS

Of the ornamental sumacs, deciduous kinds are extremely hardy to cold; they are noted for brilliant fall leaf color and, on female plants, showy clusters of (usually) red fruits that attract birds. They tend to produce suckers, especially if their roots are disturbed by cultivation.

Evergreen species are less hardy.

All sumac species thrive in almost any soil, as long as drainage is good (soggy soils can kill them). Poison oak and poison ivy were once members of the genus Rhus, but they have been reclassified as Toxicodendron.

Rhus glabra

Native to much of North America. Upright grower to 10 ft., sometimes treelike to 20 ft. Spreads widely by suckers; in the wild, forms large patches. Looks much like Rhus typhina and has the same garden uses, but usually grows lower and does not have velvety branches. Leaves divided into 11 to 23 tooth-edged, rather narrow, 2- to 5-in.-long leaflets that are deep green above, whitish beneath; foliage turns scarlet in fall. Inconspicuous flowers in early summer are followed by showy clusters of scarlet fruits that remain on bare branches well into winter.

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