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 ...

Q: Can you help me figure out what’s likely going on with this river birch tree? The tree has been dropping leaves incessantly since about April/May, hundreds per day. Should this tree be dropping its ...

My birch tree has developed a yellowish color to the leaves. It also has been dropping a lot of brown leaves over the last couple of weeks. Are these two problems connected? What is wrong, and what ...

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 ...

Click to open image viewer. Landscape and botanical sketch showing a view of two birch trees in the woods of Vermont during Autumn. Visible just beyond a bush's red and yellow leaves at lower right, ...

Autumn's vibrant leaf colours are a result of intricate biochemical processes, not mere decay. As chlorophyll breaks down, ...