Two new spruce diseases?
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. Oct 08, Those times expire in the fall of the year. The oldest needles on the trees are cast off. These needles are located on the inside of the tree, closest to the trunk. The needles drop below the tree to provide valuable mulch or scatter into the lawn when the wind is blowing.
Fall needle color change on an eastern white treegrinding.barted Reading Time: 4 mins. The most common cause for needle drop is simply natural causes. Needles will stay on a spruce tree for years before dropping, typically from the inside of the tree and on older treegrinding.barted Reading Time: 3 mins. We have long been familiar with Rhizosphaera needle cast, a very common fungal disease that affects primarily Colorado blue spruce, and occasionally Black Hills spruce.
This disease causes needles to turn purplish-brown and fall off, working from the inside of the tree out and from the bottom of the tree up. Aug 27, What Causes Pine Trees to Lose Their Needles? Pine Trees Shed Their Needles Once Every Few Years. You might be surprised to learn that pine trees shed their needles Lack of Water Can Cause Pine Trees to Shed Their Needles. Most instances of needle shedding in pine trees is a natural Fungal Reviews: 2.