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 ...

A new study reveals oak trees delay sprouting leaves by 3 days to avoid being infested by hungry caterpillars, after it ...

Oak trees have a surprising trick to fight back against hungry caterpillars: they simply wait. When trees are heavily ...

PORTLAND, Ore. (KOIN) – An invasive insect has caused noticeable damage to Oregon’s white oak trees in 2022, the Oregon Department of Forestry said. The oak lace bug, scientific name Corythucha ...

Purdue Landscape Report: Recently a homeowner in Hamilton County posted on the Indiana Native Plant Society Facebook page with concerns about aphids, mites, and apple scab in her maple and oak trees.

An infestation of caterpillars can make an oak tree postpone when it opens its leaves next year by three days, wrong-footing ...

Zack Fresco first noticed signs of an unwelcome visitor in his neighbor’s tree — a magnificent valley oak branching high above a patch of sprawling lawn on the other side of his fence. New spring ...

In between beach days and backyard barbecues, the end of summer is a good time to examine your trees for signs of hazardous invasive insects. The USDA has named August as Tree Check Month to encourage ...

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 delay spring leaf-out after caterpillar attacks, reducing damage by more than 50% and revealing a new way trees ...