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 ...

Few shade trees are as distinctive in the home landscape as birch trees. Their unique bark characteristics, distinctive growth form and graceful delicate foliage are reason alone to feature one or ...

Well into their senescence period, birch trees' leaves have turned yellow near the Alaska Public Media studios in Anchorage as of Oct. 1, 2021. (Casey Grove/Alaska Public Media) It's green-and-gold ...

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 ...

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.

Click to open image viewer. CC0 Usage Conditions ApplyClick for more information. Landscape and botanical sketch showing a view of two birch trees in the woods of Vermont during Autumn. Visible just ...

Q. (My) birch tree, planted many years ago, has never really grown full. In the spring, it will get tiny green leaves but (it’s) still very airy and not full foliage. We’ve been told not to prune it.

Summer is well underway and questions are flooding in to Ask an Expert, an online question-and-answer tool from Oregon State University’s Extension Service. OSU Extension faculty and Master Gardeners ...

Editor's note: Once a month, the OSU Extension master gardener's office of Franklin County profiles a plant that occurs naturally in central Ohio. As the growing season fades, we bid adieu to many of ...

Physicists at Umeå University, in collaboration with researchers in China, have developed a laser made entirely from biomaterials—birch leaves and peanut kernels. The environmentally friendly laser ...

Air pollution from diesel exhaust, brake dust, and other particles thrust into the air by cars on multilane highways has measurable effects on health—increasing the risk of asthma, heart disease, and ...