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The Southern Cross Timbers is a dry, hot climate. Post oak and black oak trees are hardwood, dry, slow growing trees. Prune a when to trim yew bushes of significant size and within a few weeks splits or cracks occur as wide as 3/8” or more on the branch of origin.

These cracks allow an avenue for bacteria, virus or fungus to land and spread on and in the tree cut wound where wood water/carbohydrate are food for these microbes.

Nov 26, Here are a few things you can do to ensure your oak tree stays healthy and thriving. 1. Only Trim in the Winter. With some trees, the time of year for pruning may not matter. This is not the case with an oak tree, which is susceptible to a disease called ‘oak wilt.’ Oak wilt is caused by bugs that feed on the sap of a newly trimmed stumpchopping.barted Reading Time: 2 mins.

Winter (December through February) is the best time to prune oak trees in Iowa. Pruning oak trees in winter greatly reduces the risk of an oak wilt infection. Oak wilt is a fungal disease that is lethal to many oaks.

It can be spread from infected trees to healthy trees by sap-feeding beetles (“picnic bugs”). Oak wilt infections occur most commonly in spring and early summer. Nov 23, The riskiest time of year to prune your oak tree, according to some experts, is between February 1 and June 1. Other experts say a tree shouldn’t be pruned from April to October.

It depends a lot on the climate in which you live and what months are the stumpchopping.barted Reading Time: 5 mins. The oak tree grows in the US Department Of Agriculture plant hardiness zones 3 to 10, depending on the species of course. All oak trees should be pruned in their dormant state, even mature oaks.

At this time there is a reduced risk of pest infestation and the tree can recover from its wounds faster. Feb 24, We recommend oak tree pruning when trees are dormant, preferably in late winter or very early spring when insects that spread oak wilt are not yet active.

A good rule of thumb is to prune oaks no later than March 15th. Along with timing, proper pruning technique further ensures the health and vigor of your oaks. The basics of oak tree pruning. Nov 28, Avoid pruning oak trees during the active growing months of April through June. The chance for developing oak wilt from the open pruning wound is a high risk. Prune Missing: post oak.