Send your questions to hogan.1@osu.edu. Q: I need to prune an arborvitae hedge because it is too tall. I’d like to remove 3 or 4 feet off the top of these shrubs. When is the best time to prune ...

Fertilizing: You do not need to fertilize arborvitae plants. These conifer trees are tough and self-sufficient, typically accessing the nutrients they need from the soil. Pruning: 'Arborvitae ...