Don't worry if you live in the Northeast — this pest usually sticks to other regions. Here's where it's found and why your ...

‘I have some weird, seemingly hollow, green, round balls falling from my oak tree. What in the world are these things?” — S.Y. You are describing an interesting growth that can occur on a variety of ...

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 ...

Invasive goldspotted oak borers have been newly detected in Ventura County. UC ANR is calling on community scientists to track down these destructive bugs to help protect native oak trees.

STRONGSVILLE, Ohio -- Now that the first frost has occurred, it is time to start thinking about pruning oak trees to minimize the spread of oak wilt, a lethal disease affecting oak trees that is ...

It’s less than a half-inch long but it can fell a giant oak tree in no time. The goldspotted oak borer, GSOB or Agrilus auroguttatus, is a 0.4-inch bullet-shaped beetle with six golden spots on its ...

Oak trees around Minnesota have suffered from bouts of heavy precipitation and drought — conditions that make them more vulnerable to two-lined chestnut borer, a beetle that eats the inner bark of oak ...