· Michael Blair
Most trees in Middle Tennessee are best pruned in late winter, while dormant. There are important exceptions, and one of them — oaks — carries a genuine disease risk if you get it wrong.
Late winter for most
Dormant pruning means no leaves obscuring structure, no active pest and disease pressure, and rapid wound closure once spring growth begins.
It is also easier to see what you are doing and to judge the tree’s architecture without foliage.
Oaks are the exception that matters
Oak wilt is spread by beetles attracted to fresh pruning wounds, and the risk period runs through the growing season. The safe window for pruning oaks is the dormant season.
If an oak must be pruned in summer for safety, wounds should be sealed immediately — one of very few cases where wound sealant is advised.
- Most trees: late winter, dormant
- Oaks: dormant season only, avoid spring and summer
- Spring-flowering trees: right after they finish flowering
- Dead and hazardous limbs: any time, safety first
- Avoid heavy pruning in early autumn
Flowering trees
Trees that flower in spring — dogwood, redbud, cherry — set those buds the previous year. Prune them in winter and you remove the flowers.
Prune them immediately after flowering instead. Summer-flowering species can be pruned in late winter without loss.
What not to do at any time
Topping. Cutting main limbs back to stubs produces weak regrowth from the cut, invites decay into the exposed wood, and permanently compromises the tree.
It is still offered by some outfits after storms, and it is the clearest signal to get a different quote.