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

Oak trees have forever defined this region, offering shade, habitat and a sense of place for those who spend time outdoors.

The blue oak, an iconic tree found only in California and seen across the state’s inland ranges and hills, is far more ...

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

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.

SAN DIEGO (FOX 5/KUSI) — An invasive beetle is laying its eggs in the nooks and crannies of oak tree bark in California, leading to an even deeper rooted issue. Goldspotted oak borers, otherwise ...

Oak trees are stately trees that can live for hundreds of years. These are the most common types of native oak trees that ...

A UC Santa Cruz-led study warns that many of California’s foundational tree species, such as blue oaks and Western Joshua trees, are far more vulnerable to climate change than global conservation ...