The Growth Rate of an Arborvitae Shrub

Arborvitae grows up to 12 inches per year, depending on the cultivar. The giant arborvitae grows quickly to mature size up to 60 feet high and 20 feet wide. Smaller plants, such as the emerald arborvitae, grow slowly to reach a mature height of 10 to 15 feet.

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About this Author

S.F. Heron is an avid gardener with three years of experience in online writing and a working background in aviation and earth and ocean sciences. She is published on various sites, including Helium, eHow and Xomba. She holds a Bachelor of Science degree in journalism from the University of Maryland.