Avoid trimming hedges in late summer or early fall, as this can harm new growth before winter. Freshly cut hedges are more vulnerable to cold temperatures, which can lead to dieback and other issues.
myHOMEBOOK magazine on MSN

Which plants to prune in February

In February, you can already spot the first signs of the approaching spring. Delicate buds form on branches, and some early ...
Boxwoods need regular trimming and pruning to let in light, prevent fungus, and keep shrubs healthy. Best times to trim are mid-spring and late summer—avoid pruning in fall or winter. Style options ...