Winter is the perfect time to prune oak trees. Oak trees are special for many reasons: they’re Iowa’s state tree, they’re important to our ecosystem and — they shouldn’t be pruned during the spring ...
February is a good month to prune deciduous trees in many climates. As they are dormant, they suffer less stress from pruning, and there are fewer pests and diseases around at this time of year.
Sap-feeding beetles spread oak wilt fungus during spring months, with infection risk peaking in May and June according to Michigan State University research.