When do i prune oak tree

Use caution with larger branches as their weight can break them off and leave a jagged edge. It is important to seal the wounds in oak trees because they are susceptible to disease and attacks from damaging insects. Use a non-asphalt sealant specially formulated for pruning. Latex paint can also be used.

Pruning of oak trees is best done in the winter months between November and April. This will help to prevent the dreaded oak wilt disease, a systemic problem that is very difficult to stop once it has taken hold.

Oak wilt occurs when the tree is most vulnerable in its growth season. It is spread by insects that carry the fungal disease and enter wound sites in the bark. If the tree must be trimmed or is damaged during the growth season, gardeners should dress the wounds with protective sealant immediately.

Ladders should not be used for tree trimming. For very large trees or branches located near power sources or that are beyond reach of basic pruning equipment, homeowners should call a tree service for an estimate.

These mats release a fruity odor that attracts sap-feeding beetles and other insects. As the beetles feed on the spore mats, spores often accumulate on the surface of their bodies. Sap that forms at the surface of pruning cuts made in spring or early summer may attract sap-feeding beetles that may have been previously feeding on an oak wilt infested tree.

As the beetles feed on the sap of the pruning cut, fungal spores get into the fresh wound, infecting the tree. Pruning oak trees in winter greatly reduces the risk of an oak wilt infection as the beetles and fungal mats are not present at that time of year. The bug carries spores from an infected tree to a healthy tree and, in some cases, causes death. The best way to avoid oak wilt is to trim your tree in the winter because there is less chance that a bug will contaminate your tree.

However, you need to ensure the tools are clean and dry before using them on your tree. If you have more than one oak tree, you need to clean your tools between trees to reduce the risk of spreading any possible diseases. If your tree is under 3 years old, you should only trim the dead or broken branches. Doing so will reduce the risk of exposure to disease and prevent you from accidentally killing the tree.