These are referred to as codominant stems . Trees have both branches and stems that look like branches, called codominant stems, as shown on the left. If a codominant stem must be removed, cut at an angle outside of the bark ridge as shown in the insert at right. Avoid leaving any stub. Avoid removing stems, where possible, because there is no natural barrier zone where two or more stems join.
Organisms have an easier time invading such cuts.
Large Branch Removal When removing large branches, first make an undercut several inches outside of the collar. Next, remove the limb with a second cut an inch or so outside of the undercut. This removes the limb weight and prevents stripping of the bark when the limb falls. If you need to climb more than a step ladder, or if the tree limbs to be removed are large or may fall onto utility wires or a structure, it is best to hire a bonded, professional tree company to do the job. Wound Dressings Not Useful Wound dressings have been shown to interfere with the natural development of callus tissues that eventually close the pruning wound.