What Tree Diseases Can Attack Your Trees?

What Tree Diseases Can Attack Your Trees?

The most common tree diseases are needle blight, bark fungus, Lyme disease and the deciduous tree diseases. As they have name indicates these are the diseases which occur on trees and affect the foliage, bark, twigs and leaves. Although some of these tree diseases are local and can be cured by applying the appropriate remedies, some tree diseases can’t be cured even with the application of the right remedies. In this situation, it is recommended to take immediate action by consulting a professional tree expert.

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Needle blight is a local type of tree disease which affects the Leyland Cypress, Loblolly Pine, Boxwood, Pin Oak, White Pine, and the cedar trees. This disease generally occurs on the bark and needle. It is usually distributed over the entire tree canopy spreading over the entire tree. This tree disease can be controlled by applying fungicides, insecticides, or both.


Bark fungus affects the Leyland Cypress, Loblolly Pine, Ponderosa Pine, Pin Oak, White Pine, and the cedar trees. This is a widespread fungal infection which produces dark brown spots on the needles and the bark of the trees. This tree disease can be identified by its dark brown spots that appear on the needles, bark and leaves. If you find any infected needles, you should immediately throw them away because this is the most dangerous type of tree disease.


Lyme disease occurs in a particular group of infected deer. It is caused by ticks sucking blood from the body of the tick. The tick’s body will develop rashes and fever due to the tick’s blood. If the infected tick is touched by your clothing, you can also be infected. However, it is rare to find any humans with this disease.


Bark beetle is a common pest tree disease affecting the Juniperus ashei trees. It is usually found in moist areas and trees with deciduous trees. The beetles feed on the bark of the tree, making the tree susceptible to severe decay and damage. The beetles cause extensive shade and drying out of the tree.


Rust is a type of tree disease which affects Pin Oak trees. It is an insidious disease that does not show any symptoms. When the infected area comes into contact with oxygen, rust causes its death. Rust is highly contagious and can affect plants, flowers and soil. A well-known form of rust is the blue blight tree disease that can infect pines, spruces and hemlock. Blue Blight has killed over one hundred South Carolina homes.


The larvae of aphids cause a tree disease known as root rot. They attach themselves to the diseased part of the plant and feed by extracting nutrients. The affected parts are stripped of sap causing the plant to wither and die. Damp clippings of aphids are visible on the infected areas. The needle-like leaves can be seen to wither when the aphid feeding on it is removed.


Powdery Mildew is a common tree disease which attacks black cherry, quince, amaryllis, and buckeye. It forms white, powdery colored mats on the infected branches. If the needles are disturbed while pruning, the fungus can enter the tree and infect it. Pruning needles should never be dipped into the tree compost or bin dampened with water. A syringe with sterile cotton can be used to dip needles.


Red Spotted Wasp is another type of tree disease which can infect both soft and hard wood. When syringes or needle-like objects are dropped on the infected area, the tree disease is spread by wind and the bacteria then infects the sapwood. Affected areas of the tree will soon develop yellowed sapwood and eventually die. To prevent the disease from spreading, the infected tree should be inspected daily for dead or dying needles.


Powdery Mildew is also called white spot or white spots ailment, because it usually infects softwood trees. It causes a milky whitish powdery appearance on the needles of the tree. It can attack an entire tree or a small section at certain times during the year. Sometimes, when the sapwood is exposed to warm temperatures, the disease spreads rapidly. To determine if syringe-like objects are present in the soil of a tree, the tree should be dug up and examined.


Tree diseases are unavoidable when you have trees in your landscape. Luckily, there are several ways to prevent them. If you are having problems with your trees, don’t hesitate to contact a tree specialist before the situation worsens. In addition, there are several products on the market today that can help keep your trees healthy and ensure they’ll remain your property’s beautiful garden feature year after year.