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 ...

Q: I have a pine tree on the edge of my lawn that has clusters of mushrooms coming up around the base of the trunk. My friend told me these mushrooms are a sign that the tree has rotting roots and the ...

Dead limbs, exposed roots, and fungus are signs a tree is in trouble. Dead limbs, visible fungus, or storm damage can all point to deeper issues—an arborist can help decide if the tree can be saved or ...

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 ...

Q: I recently purchased a home with several mature navel orange trees. One of the trees has about half the bark missing from the trunk and sort of circular looking lesions that ooze sap in the area ...

An interesting amber-colored mushroom is showing up in many gardens. It’s actually kind of pretty, but it’s scaring some folks, especially when tree care companies and arborists report that it is ...

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 ...