Pruning timing is one of the most consequential decisions in tree care. Prune at the wrong time and you stress a tree, invite disease, or trigger excessive regrowth. Get it right and pruning actively improves tree health and structure.
The General Rule: Late Winter
For most deciduous trees in Maryland — maples, oaks, elms, cherries, ash, and others — late winter is the ideal pruning window. February through early March is the sweet spot: the tree is fully dormant, wounds close quickly when growth resumes, and insects that spread disease are inactive.
Flowering Trees: Prune After Bloom
Spring-flowering trees set their buds the previous summer. If you prune them in winter, you remove the flower buds before they open. For dogwood, redbud, cherry, serviceberry, and crabapple, wait until immediately after bloom — usually late April to early May in Central Maryland.
Oak and elm are the exception. Due to oak wilt and Dutch elm disease spread by beetles active April–October, these species must not be pruned between April and October. If you need oak or elm work done, schedule it in late fall or winter.
Storm Damage: Prune Anytime
If a storm damages a tree and creates a hazard, prune it regardless of time of year. Broken, hanging, or split branches are a safety risk and create entry points for decay. Prompt removal is always the right call.
What About Summer Pruning?
Summer pruning is sometimes used to slow a tree's growth or remove problem branches when leaf-out makes structure clearer. It is generally more stressful for the tree than winter pruning, so we limit it to corrective or safety work.