Tree Care Issues - Diseases: Fire Blight

Fire Blight is a common tree disease which can infect fruiting trees such as pear, apple, crabapple, hawthorne, and other related trees. Visually, clusters of flowers may begin to wilt and turn brown shortly after blooming followed by twig discoloration.

The infected twig will have leaves wilting and turning brown while remaining in place on the twig or branch (which may distort in shape to look like a hook) of the tree. The name 'fire' blight comes from the appearance of scorched leaves and fruit.

The warmth of spring accompanied by high amounts of moisture favor the development and spread of this disease. As spring hits, infected wounds or cankers will ooze sap. The sap may drip or be carried by water, insects or tools to uninfected parts of the tree or to new trees, thus spreading the disease. As the infection spreads through the tree, new wounds or cankers are formed which may spread the disease the following spring.

Proper pruning of infected branches and twigs may help to keep the spread of the disease to a minimal; however, it is important to note that the canker harbors the disease in winter and this is the ideal time to remove and destroy infected parts of the tree. Always clean your tools properly after pruning.

Disease Development Favored by:

Corrective Measures:

If you believe your trees or shrubs have been affected with disease or fungus activity, call Grounds Services today for a no-obligations visit at 419-536-4344.


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