Pruning Mature Trees

Here in the northeast section of the United States, late winter is the perfect time of year for pruning a mature tree. Just before bud break, when the tree is still dormant, is generally the time of year a tree is at its strongest.

For trees that flower, however, wait until after the tree has bloomed in the spring to maximize flowering. Proper pruning will improve a tree’s health and encourage vigorous growth, but improper pruning will stress a tree and may cause it to die. So take the time to learn to make proper cuts before you begin.

Branches are attached to the main trunk by a branch collar (see photo), where branch wood and trunk wood grow together to form a strong bond. It is easily recognized as a swollen, raised area at the base of the branch.

Branches to remove by pruning include dead, decaying, damaged or diseased limbs, those that cross or rub, water sprouts and root suckers. Remove branches just to the point of its attachment at the branch collar. Be sure not to make a flush cut which removes the collar and exposes the trunk to decay and possible structural problems.

To reduce the tree size, shorten a branch just above a lateral or side branch. This is called a reduction cut. The lateral branch should be at least 1/3 the size in diameter as the branch to be removed. Never use a heading cut which is cutting a branch indiscriminately at any random point in the branch. This is done to reduce the tree size, but this practice can seriously weaken a tree.

Be sure when pruning a tree to work safely. It is wise to never work off a ladder or climb a tree. And never use a chainsaw above your head. If you can’t reach it, hire a certified arborist.

As we move into spring, your diligent work now will reward you with healthy trees, beautiful spring flowers, and summer shade.

Jesus knew that his listeners would be familiar with the practice of pruning when he spoke to them as recorded in John 15:1-2: “I am the true vine, and my Father is the vinedresser. Every branch in me that does not bear fruit he takes away, and every branch that does bear fruit he prunes, that it may bear more fruit.”

Our diligence to abide in Christ is essential. Ridding our lives of that which is decaying or is sucking our spiritual strength is a painful process, but necessary to our health and fruitfulness. Now is a good time to prune.