How Big

Asked November 22, 2017, 9:18 AM EST

How tall do arborvitaes grow? How big around? I have two that have been growing for about 20 years. I prune them every 3-4 years but they now are 10 - 20 feet tall and about 4 feet in diameter. How much taller will they get? How much larger in diameter?

Charles County Maryland

2 Responses

The genus Thuja arborvitae consists of a major group of small to large size evergreens. There are several species and many cultivars of different form, size, and with varied foliage. If you know the species and cultivar we can give you more information regarding height and width.


I am unable to determine the species. I guess I will just have to wait and see if they get any bigger. Thanks for your help.