When to Trim Boxwoods The best time to prune or trim evergreen shrubs like boxwoods is mid- to late-spring. Trimming too early in the year can kill the plant in cold climates.

The best time to prune evergreen shrubs can vary depending on the type, however, early spring and late summer tend to be the best time to trim evergreen bushes.

The best time to trim and reshape any evergreen shrub is late winter, a few weeks before the burst of spring growth.

Here are two important items to put on your to-do list: pruning and fertilizing your trees and shrubs. Mid-to-late February makes an ideal time for trimming away branches to shape trees and shrubs.

Tis’ the season for tree trimming, arborists say now is the time to get tree maintenance done.