Smoke bush, Cotinus coggygria, is a deciduous shrub or small tree often used as a garden specimen thanks to its beautiful purple-pink smokey plumes and the purple leaves found on some cultivars. Smoke bush has an upright, multi-stemmed habit. The leaves are waxy green except for those cultivars with purple leaves. Ovate-shaped leaves grow up to 3 inches long, turning yellow, orange, or purplish-red in fall, depending on the variety. The name “smoke bush” derives from billowy hairs attached to the flower clusters, which remain in place through the summer, turning a smoky pink to purplish-pink as the weeks progress. Description from The Spruce
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