The Shumway Oak Grove Regional Park in Stockton launched an autumn nature walk for the community to get an inside look at how important California's historic oak trees are, especially during the fall.

The goldspotted oak-borer, an invasive beetle responsible for killing 200,000 trees in Southern California, is now present in ...

Shortly before 2000, California oaks began dying. The University of California launched an investigation. What was causing this plague, and how might California oaks be kept healthy? A water-borne ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. SAN DIEGO (FOX 5/KUSI) — An invasive beetle ...

This story is free to read because readers choose to support LAist. If you find value in independent local reporting, make a donation to power our newsroom today. Tree limbs and tops began falling off ...

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 ...

Volunteers paint lime wash on an oak tree that is dying from a beetle infestation in Silverado Canyon on Thursday. (Allen J. Schaben / Los Angeles Times) The tree was dead. Ron Durbin, who trekked ...

An Inland Empire city has approved a development project 450 feet away from the third oldest known living organism in the world — a sprawling, shrub-like oak tree that is more than 13,000 years old.

Add Yahoo as a preferred source to see more of our stories on Google. Environmentalist Aaron Echols, conservation chair of the California Native Plant Society's Riverside/San Bernardino chapter, walks ...