Hay fever sufferers are being warned that the warm weather has encouraged ash and birch trees to flower early this spring, and that the symptoms could be confused with coronavirus. People who are ...

People love their chalky white birch trees. Unfortunately, so does a tiny insect that causes big problems. Only a half-inch long as an adult, the bronze birch borer started establishing itself in the ...

Got a birch tree that doesn’t look too healthy after our long, dry summer? You aren’t alone. Both European white birch and river birch are popular landscape trees in the Inland Northwest. However, ...

River birch is a medium sized native tree commonly grown in landscapes for its attractive bark and fast growth. In the wild, river birch almost always occurs along river banks, while in the landscape ...

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.

Want to plant a tremendous tree? Look no further than the river birch, Betula nigra. Indigenous to the eastern United States, the river birch is commonly found in flood plains and/or swamps. Native ...

Larvae of the leaf beetle Chrysomela lapponica attack two tree species: willow and birch. To fend off predator attacks, their larvae produce toxic butyric acid esters or salicylaldehyde, whose ...