Upright varieties, such as ‘Techny’, grow 20 to 30 feet tall in about 10 years, while ball-shaped varieties, like ‘Tater Tot’ and ‘Little Giant,’ maintain a round form, quickly ...

One of the best shrub arborvitaes is ‘Mr. Bowling Ball‘, Thuja occidentalis ‘Bobozam ... As its name implies, it grows into a rounded shape without pruning. Hardy in U.S. Department of Agriculture ...