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

Some lawn maintenance is recommended now that the leaves have fallen.Experts explained why this is the best time of year to ...

an invasive fungus that is threatening Minnesota’s oak tree population. Sometimes characterized by browning or golden leaves at the top of the tree and a dark bluish-gray discoloration in the bark, ...

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What is wrong with my live oak? I hope it’s not a disease, since I have five others in my yard, and I don’t want it to spread ...

Oak wilt is usually first identified when green leaves turn yellow or brown on the edges and begin to drop during the summer.

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

Q: One of my five oak trees is having this problem and I’m wondering what I should do. I hope it’s not a disease that could ...

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 ...