Most evergreens shed there needles and leaves in late summer and all through autumn. These needles that are shed are typically old and discolored, falling off in a natural process. Every species of evergreen is different, so not all shed their needles during autumn. Also, some trees will retain their needles for several years before dropping them off, while some shed their needles on a yearly basis. Most of these discolored needles are hidden in the inner layers of the tree, and are not visible until they drop. If an evergreen has an abundance of brown or yellow needles, they may be something wrong with the tree’s health.
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