It can spread from infected trees to healthy trees by sap-feeding beetles.

Prune spring-flowering shrubs and trees right after they bloom in the spring. Do NOT prune in fall or winter. These plants develop their buds on old wood- branches that grew last year. By fall, they’ve already formed their flower buds and if you cut off the flower buds, you won’t get any spring blooms.

Apr 23, When to Prune Trim early-spring flowering shrubs right after they bloom. Clip summer flowering plants in winter or early spring. Trim nonflowering plants after new growth has completely Estimated Reading Time: 3 mins. Aug 05, For most shrubs, late winter or early spring is the best time to prune. The plants are still in full dormancy at this time but are just preparing to produce new growth.

If your shrub is a spring-blooming variety, though, make sure to leave behind enough flower buds on the stems for a spring stumpcutting.barted Reading Time: 6 mins. Oct 05, When to Tackle Overgrown Shrub Pruning. Although it’s easy to focus on how to trim an overgrown shrub, when to prune is equally important.

Badly overgrown shrubs respond well to pruning in late winter/early spring, just before new leaves appear. Managing large shrubs isn’t done overnight. Instead, prune neglected, overgrown shrubs over three stumpcutting.barted Reading Time: 2 mins. Shrubs should be pruned in their dormant stage when they aren’t producing and are preparing to overwinter.

In most cases, you’d prune them in late winter or the earlier part of spring when it’s still cool outside. 3. Fruit Trees and BerriesEstimated Reading Time: 7 mins.