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A Guide To The Different Most Common Tree Diseases

September 12, 2017 • caledoniasailing

Tree diseases are common problems evident in the natural landscape. It can be difficult to identify the different diseases because the causing factors are rarely seen by the human eye. In fact, it is impossible to notice a tree disease until the symptoms are present and this is sometimes too late to treat the tree. To help avoid tree diseases and deal with infections it is important that you have a strong knowledge of these conditions. This article will provide information to the most common tree diseases currently diagnosed by professional arborists.

1. Phytophthora Root And Crown Rot

Phytophthora root and crown rot is a combination of crown dieback, loss of foliage, tree discoloration, and a general unhealthy tree appearance. Young trees are particularly susceptible to this condition because of their underdeveloped root systems and crowns; and when the crown is attacked, the tree may be destroyed in a few months. Of course, it is possible for the tree to survive for several years with this condition with the disease spreading to the root instead of a short failure.

To avoid root and crown rot, it is recommended that the tree is placed in an area with good soil drainage. This is important because Phytophthora tree rot thrives in a moist and warm soil.

2. Anthracnose

Anthracnose refers to the symptom of an infection rather than a particular tree fungus. This symptom presents as an irregular dead area or dark blotches on the leaves of the plant. In some cases, the whole leaves are engulfed, but it is also seen that the infected areas girdle twigs causing them to die. The result is a regrowth from the lateral buds providing the tree with a gnarled appearance.

3. Oak Wilt

Oak wilt is a tree disease attributed mainly to oak trees and it is transferred in two different ways. Firstly, the infection can be carried by insects; the second is via a root graft infection where the roots of trees meet in the soil forming a connection. It is important to note that oak wilt symptoms progress differently according to the type of oak. The one common symptom, however, is that of leaf drop.

In red oaks, the symptoms of oak wilt include leaf drop with the leaves turning from partially green to partially brown in appearance. A professional tree care service in your local area.The rapid progression of the disease prompts quick death of the tree and a dark streak may appear in the red oak bark if the tree was infected.

White oaks present with the same type of leaf drop; however, the leaves of the trees discolor from the tip down in comparison to the red oak that worked from the stem up. The white oak becomes diseased over a period of time and the death of the tree can take several years.

4. Sooty Mold

Any plant presenting with an infestation of insects or growing beneath an infected plant may be affected by sooty mold. The sooty mold fungus is a general term for several types of molds using honey-dew secreted by sucking insects as food for development and growth. The mold does not necessarily cause damage to the tree, but it can be a problem for homeowners.

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