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. Alaska is in the midst ...

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 see ...

It’s the time of year when yellownecked caterpillars will soon engulf unprotected river birch trees. These pests also feed on blueberry, hickory, maple and oaks, but I have only seen them on river ...

Trees can be identified in winter by observing their needles, bark, branching patterns, and buds. Distinctive bark, such as the smooth gray bark of a beech or the peeling white bark of a paper birch, ...