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These days, it can be confusing about pruning paint because of the oak wilt in our area.
When we prune our red oaks and live oaks, especially February through June, it's very important to apply pruning paint. However, it's advisable to apply pruning paint to susceptible oaks whenever you prune. The insects that transmit the disease are not active right now in January, but since our weather is as unpredictable as our insects, if you're pruning an oak, the best advice is to always cover any cuts with pruning paint.
On other trees, you don't need to apply pruning paint. It does inhibit the natural healing process that occurs when you prune in the proper place on the tree. So normally you would not apply pruning paint of any sort.