Trees are a must-have for natural shade in your outdoor space. And this fast-growing tree is the ideal species, giving you a ...

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 ...

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 ...

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 ...

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, ...

Curly—or Karelian—birch is a mysterious tree with a patterned wood texture and a bizarre trunk shape. Unlike the elegant white-stemmed traditional birch, the Karelian one may seem unsightly at first ...

Bright and white against blue skies, paper birch trees (Betula papyrifera) liven up the winter landscape, especially when contrasted against green conifers, which have made them darlings of seasonal ...

Fall is here and all of those end-of-season projects are looming. If you’ve got questions, turn to Ask an Expert, an online question-and-answer tool from Oregon State University’s Extension Service.