If you have one or more of these trees growing in your yard, the best time to fertilize them is in early spring. American arborvitae trees can be grown ... salt damage from too much fertilizer.

When young, it can grow as much as 3 feet per year, maxing out at about 50 feet tall ... need a single tree to create privacy. It may also do better in hot, dry climates than arborvitae.