Researchers explain why shot‑hole borers spread unevenly, how pollution and stress play a role, and what the infestations could mean statewide.

A deadly oak disease that also affects redwoods and other trees has spread to a far Northern California tribe's lands.

The state is facing a "rising tide" of invasive pests. Is it prepared?

SANTA CRUZ — After infested trees were recently discovered near the Tannery Arts Center, the city of Santa Cruz is asking community members to watch out for signs of an invasive beetle that has the ...

(KRON) — Shothole borers — invasive, sesame-seed-sized beetles that can kill or severely damage many different kinds of trees — were recently found in Santa Cruz’s Tannery neighborhood, the City of ...

California’s iconic trees are in much more danger from climate change than official international conservation lists ...

Mark Collins has run Evergreen Wholesale, a 230-acre plant nursery in San Diego, for over 40 years. But this year, he almost ...

Many California trees may lose over half their habitat due to climate change. Current risk systems do not fully include ...