River Birch Tree Borers

In later stages of infestation the trunk will show d shaped rust stained exit holes. Below learn how to identify tree borers and get info on treatment. The river birch has not yet reached the popularity of many maples and oaks but it is well on its way.

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Attractive salmon pink to reddish brown bark exfoliates to reveal lighter inner bark.

River birch tree borers.

Generally the bronze birch borer is the. The bronze birch borer is the most threatening pest of ornamental birch especially white barked varieties and trees under stress. Dark green foliage turns a beautiful buttery yellow in the fall. The species is valued for its relatively rapid growth tolerance of wetness and some drought unique curling bark spreading limbs and relative resistance to birch borer.

A birch infested with bronze birch borer will start showing dieback in the crown increasing in severity as the infestation continues often leading to death of the tree. But as a landscape tree it can be planted almost anywhere in the u s. Early warning signs of damage are a yellowing and thinning of foliage at the upper crown of the tree and d shaped holes in the trunk where the borer larvae have made entry. But healthy trees aren t off.

Usually native borers like the bronze birch borer seek out trees that are already stressed i e by drought disease or maybe a pruning injury. Wood eating beetles do exactly as their name describes they eat away at the river birch betula nigra leaving behind a damaged and unhealthy tree. The bronze birch borer typically attacks trees which are already stressed or in decline. River birch is a popular fast growing native tree for the home landscape.

The four wood boring insects mentioned below attack a wide range of trees. This species is resistant to bronze birch borer bbb.

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