The Garden Bug: Pruning Trees

By Brenda Weaver

Create adequate spacing for the main branches along the trunk, and prevent branches below the permanent canopy from growing upright or getting too large. Always prune just outside the branch "collar," the point where one branch attaches to a larger one or to the trunk. Remove any branches that cross or rub against each other, and any torn, dead or broken branches.

Source: csfs.colostate.edu