Some summary data

Smoketree Family
Species	Size	Basic Requirements
American Smoketree (Cotinus obovatus)	Mature height is 20 to 30' with a spread of 20 to 30’, medium growth rate.	Zones 4 to 8, full sun, adaptable to many soils and pHs, including clay and alkaline. It is very tolerant of hot, dry, gravelly soils and sites
Common Smoketree (Cotinus coggygria)	Mature height is 10 to 15’ with a spread of 10 to 18’. Growth rate is slow.	Zones 5B through 8, full sun, adaptable to many soils and pHs, including clay and alkaline. It is very tolerant of hot, dry, gravelly soils and sites