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International Society of Arboriculture: www.isa-arbor.com Wyoming State Forestry Division: ... Dormant duties...

by admin

* Consider removing any branches that have a weak attachment. Upright angles are generally weaker than right angles, and often have "included bark" where a significant part of both branches has grown over bark instead of forming solid wood.

"By removing branches that are temporary, or compete with other branches, the water and nutrients that the tree uptakes are going to go into the branches that remain," Hughes said.

* Make all pruning cuts outside the branch collar, and avoid topping trees by cutting off the ends of large limbs or the main leader. Use the three-cut method, shown in the accompanying diagram, on larger limbs to avoid stripping bark.

"Flush cuts and topping are the most detrimental things you can do to a tree, because it almost always leads to decay into the main trunk," said Hughes.

* Disinfect tools between cuts to prevent the spread of disease. Spray Lysol, alcohol or a mild bleach-water solution can be used. Spray tools afterward with a lubricant, like WD-40, to prevent corrosion.

* Try to train trees when they are young and the cuts will be small. For example, if a tree is someday going to provide shade, all branches at head height or below should be removed early in the tree's life.

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