American beeches have been suffering recently from a disease widespread in both Connecticut landscapes and forests.

Add Yahoo as a preferred source to see more of our stories on Google. Trees produce antibodies against harmful fungi. But bark beetles absorb these antibodies and use them to their own advantage. And ...

If you take a close look at some of the more established trees in your landscape, you may notice something you cannot seem to describe – it may look to you like a kind of fungus on your tree trunk. Is ...

Bark beetles moving between trees routinely carry two fungi that are responsible for the Dutch elm tree disease outbreak.

I was walking my puppy in my neighborhood earlier last week when I noticed an usual growth on the side of a large, dormant ...

Q: I recently noticed a black, tar-like patch on my tree trunk, though it’s not tacky like actual tar. Are these insect eggs? Dried sap? Do I try to scrape it off? The tree has lichen but I don’t ...

In most Chicago suburbs, you can’t drive a block without seeing a spruce tree. Norway spruce, blue spruce and white spruce are among the most popular trees in the area, prized for their winter color ...

Bark beetles can destroy spruce forests by converting the trees' defences into even more toxic substances, scientists recently discovered. But a special fungus can help the trees circumvent this ...