In fact, a healthy birch tree can survive several years of roller infestations, by which time Nature usually supplies the predators that bring the numbers of leaf rollers into balance.

Many birch leaves in Fairbanks and Anchorage are going from green to brown as the result of an insect infestation. U.S. Forest Service entomologist Stephen Burr in Fairbanks says a leaf mining bug ...

River birch is known as a “trashy” tree in that it drops twigs and leaves year-round. I don’t know which varieties are more prone to dropping things, but I’d bet the newer ones, like ...

Aug. 31—birch, birch leafminer, leafminer Brown birch trees in both Southcentral and Interior Alaska this summer aren't signaling an early fall. Rather, they are subject to an infestation of ...

The pinkish-red spots on your birch’s leaves appear to be erineum patches, which are a type of gall caused by very tiny eriophyid mites feeding on the leaf tissue. You will need a microscope to ...

Brown birch trees in both Southcentral and Interior Alaska this summer aren’t signaling an early fall. Rather, they are subject to an infestation of small, leaf-munching larvae.