Tree & Shrub Insects: Pitch Mass Borer.

Pitch Mass Borers attack a wide variety of pines and spruces. The adults (which look like yellow jackets, though are moths) lay eggs near wounds on trees, such as where a branch had been removed or where mechanical injury occurred. After the larvae/borer hatches from the egg, it will start boring into the wood of the tree. The tree will start dying from the top downward and a near continuous flow of pinkish sap or pitch can be seen running down the trunk of the tree.

Trees Susceptible to Pitch Mass Borer

What the homeowner can do:

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


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