A deadly new oak-tree disease can be prevented by pruning them in the dormant season (if needed) instead of spring or summer.

A UC Berkeley-led citizen science project has discovered at least four outbreaks of a new, potentially more aggressive form ...

From now through the end of December is the time of year to inspect your trees for Sudden Oak Death. The mold pathogen that causes Sudden Oak Death, phytophthora ramorum, is most active during wet ...

At the California Poison Control System in San Francisco, a call has just come in from a mother whose toddler accidentally ...