We needed firewood for next winter. The big old beech was leaning over our cabin. It hasn’t been well for years, so we decided to fell, cut, split, stack, season and burn it. “Timber!” The ...

Dear Roger: Enclosed you will find branches from my azaleas. All of them are covered with this black soot and lichens. How should I treat this? — Purdie Matthews., Fayetteville Dear Purdie: You didn’t ...

QUESTION: My azaleas are getting a grayish green moss on the branches. It doesn’t seem to be harming the plants, but it looks unsightly. Is there a way to remove it? ANSWER: Lichens are producing the ...

Certain lichens can break down the infectious proteins responsible for chronic wasting disease (CWD), a troubling neurological disease fatal to wild deer and elk and spreading throughout the United ...

Gardeners and homeowners often contact our Horticulture Hotline at Cornell Cooperative Extension in Oriskany when they notice a grayish blue-green crusty or mossy looking growth on trees, shrubs, ...

Gardeners and homeowners often contact our Horticulture Hotline at Cornell Cooperative Extension in Oriskany when they notice a grayish blue-green crusty or mossy looking growth on trees, shrubs, ...

This photo shows a lichen growing on hickory tree bark. Folks sometimes become concerned when they notice strange gray-green patches on the trunk or branches of a tree. Should the growths be removed?

Q. I notice many of my pine trees have lots of bright green-gray things growing on the trunks. Is it a virus? What is this? Is it harming my trees? What can I do to reduce or eliminate it? A. I am ...

The list of diseases attacking trees in the Pacific Northwest grows every year. A pathogen new to Pierce County brings an added concern: It can injure people. A research project using citizen ...

The list of diseases attacking trees in the Pacific Northwest grows every year. A pathogen now found in Bellingham brings an added concern: It can injure people. A research project using citizen ...