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. Another light trimming is allowed by mid ...

Q.: What is the best time to trim boxwood and how much should be trimmed? Also, what about timing on trimming rose of Sharon? Don Hoenes, Union City A.: Assuming the boxwood is several years old ...

Flowering shrubs that bloom in summer or early fall (i.e. butterfly bush, caryopteris, rose-of-sharon, panicle hydrangeas, etc.) are best pruned at the end of winter (going into the new growing season ...

It is almost always best not to prune away more than one third of a shrub at a time. Removing more than that might result in the plant never being able to recover and produce enough new growth to ...