Ron Durbin, who trekked with a group into a rugged Santa Clarita canyon, quickly spotted nearby trees pockmarked with D-shaped “exit holes,” a deadly calling card. This was the work of the goldspotted ...

Welcome to our tree column, “Ask your local arborist.” Each month, arborists from the Davey Tree Expert Company in Menlo Park discuss a tree-related topic from general care and planting tips to how ...

The goldspotted oak-borer, an invasive beetle responsible for killing 200,000 trees in Southern California, is now present in Ventura County. It's the northernmost reach of the insect.

The Mediterranean oak borer, a miniscule beetle no bigger than a sesame seed, has been discovered in trees around the Portland area. The invasive pest native to Europe, the Middle East and North ...

Backyard Farmer looks at disease & insect problems on oak trees & tips to help keep weeds down. Backyard Farmer looks at disease & insect problems on oak trees & tips to help keep weeds down. Host Kim ...

Question: Yesterday I read that “oaks are a keystone species”. What exactly does that mean? Answer: A keystone species is a plant, animal or microorganism that is vitally important to its environment.

Houston’s landscape may look browner than usual after this week’s frigid spell, but where the environment is healthy, there is no such thing as the ‘dead’ of winter. Hundreds of species of creatures ...

Q: Several days ago, our neighbor’s oak tree was struck by lightning. We noticed a burn mark down the side of the trunk and the soil at the ground line was very much disturbed. In the past few days, ...

Have you ever walked in the shade of a mighty oak tree? In late summer or fall, you may find an odd little brown woody ball attached to a fallen twig. Look up into the tree, and you may see more ...