Non-fruit bearing plum tree

I have a non-fruit bearing plum tree. It is growing well and needs trimming. It is growing outward into my neighbors property. When is it best to trim it and how? - DLB of Apex

Anne's response:

The best time to prune a non-fruiting tree is in the dormant season. In the Raleigh area this is usually January or February. You will lose some blooms but the plant will flower in the spring. Trees are pruned to remove branches that are rubbing another branch, branches that grow in to the center of the tree and small limbs that grow out from the bottom of branches. Under North Carolina law your neighbor is within his rights to remove your plant material that grows into his yard.