Anthracnose, a tree fungus, can cause ash trees to lose their leaves early.

Mar 18, The short answer is that leaves fall off trees when they aren’t doing their job any more. A leaf’s job is to turn sunlight into food for the tree.

To do this, the leaf needs water. In nature, most trees will lose their leaves during fall and overwinter and everyone knows you should expect this, however, there are times when leaves will drop off when you don’t expect them to and there are a number of reasons for this.

The exception to the rule for leaves falling off trees is, of course, evergreen trees and just like the name suggests this variety of tree should stay green forever, if it Estimated Reading Time: 6 mins. So they do fall off!

Their separation layer rarely detaches completely on its own.

That’s because the tree has been cut down and cannot uptake water anymore. As the tree loses water, the leaves, or needles, become unable to create food anymore, so they fall Estimated Reading Time: 4 mins. Sep 01, There are three general reasons why trees lose their leaves early. The canopy is crowded. Some trees may have grown more leaves than they can support, so they drop leaves to conserve water in hot, dry weather.

th. It's a pest or disease. See what summer pest could be hurting your tree leaves.

Keep plants away from drafty doors and windows.

Aug 23, If the leaves and twigs are not protected from the air and sun during transport, this can cause the leaves to dry and fall off. It is important to keep the roots moist and to the extent possible to protect the leaves from the high velocity, drying air during transport.

However, there are other factors that could be involved.