Sold both as ware arborvitae and as robusta arborvitae. This winterburn resistant cultivar grow slowly into a dense pyramid with bright green foliage. Very hardy and generally recommended, but suffers from bagworm, heart rot, and spider mites. 15 x 10 Hardy Zone 2. Noted for its dark green foliage that can be sheared very successfully.
Authorities differ on whether it is slow growing like the other arborvitae, or is fast growing.
Desirable and generally recommended. Can grow a lot bigger than desired, but can be easily pruned to keep it under control. Also listed as a tree under key no. 2260b, but often planted as a shrub with the expectation that regular pruning will keep it the desired size.