River birch is a popular fast growing native tree for the home landscape.
River birch tree borers.
The river birch has not yet reached the popularity of many maples and oaks but it is well on its way.
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.
The bronze birch borer typically attacks trees which are already stressed or in decline.
This species is resistant to bronze birch borer bbb.
But healthy trees aren t off.
The bronze birch borer is the most threatening pest of ornamental birch especially white barked varieties and trees under stress.
The four wood boring insects mentioned below attack a wide range of trees.
Generally the bronze birch borer is the.
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.
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 as a landscape tree it can be planted almost anywhere in the u s.
Attractive salmon pink to reddish brown bark exfoliates to reveal lighter inner bark.
In later stages of infestation the trunk will show d shaped rust stained exit holes.