The DNR said oak wilt is first identified when the trees’ green leaves turn yellow or brown around the edges and begin to ...

Herbicide alone isn’t necessarily the best way to kill ivy, because the waxy cover on ivy leaves blocks the chemical from ...

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 ...

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