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These needles are young and have not out-lived their usefulness. The culprit is probably some type of disease or insect. So, if one-third to one-fourth of the needles on the inner parts of your evergreen tree are falling off, it is probably just a normal sign of aging.

Just rake up the dead needles, or better yet, leave them under the tree for a good mulch. Aug 15, It is typical for all evergreen trees to shed out old needles in the fall. Fall needle drop is usually preceded by yellowing of old (often interior) needles. Sometimes needle drop happens in early summer, especially if a tree has been recently transplanted. Oct 22, The difference between deciduous and evergreen trees is that evergreens drop needles in cycles that are generally longer than one year.

A rule of thumb is that conifers drop needles three years after they produce them. However, some hang on longer and some drop their needles shrubcleanup.barted Reading Time: 6 mins.

Fall needle drop is a normal process of evergreens which they will recover from. Keeping Your Evergreen Trees Healthy The best measure of treatment for all trees and plant life is to keep them healthy, planted in the right location, and properly watered. Apr 05, Pine trees begin to drop needles in late summer, typically September.

Your tree will continue to drop needles until November or December. Pine trees can drop up to half their needles in the fall. Although they are considered “evergreen” trees, pines.