Proper pruning is done with an understanding of how each tree responds to each.
Minimize pruning oak trees between February 1 and July 1.
This is when the Oak Wilt fungus is most active. Best time to prune trees is either in the middle of the summer, when temperatures are the hottest, or in late fall/early winter months when temperatures can be the coldest.
It depends a lot on the climate in which you live and what months are the coldest.
When an oak tree is cut in the spring the cut will ooze sap, attracting the beetles and thereby infecting the tree. Generally, the worst time to prune trees in Texas is between February to June. However, this range greatly depends on your climate and the temperature. Best Time for PruningLocation: Lavaca St SuiteAustin,Texas.