Santa Clarita Valley oak trees are being invaded by the goldspotted oak borer; an insect named for its iridescent black shell ...

The tree disease that exploded in Bay Area forests three decades ago, stunning residents with vast die-offs in parks and neighborhoods before slowing, has opened a new front with a second, potentially ...

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 ...

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

A second look is exactly what some scientists did. Those researchers snipped leaf samples from multiple trees in that ...

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

Conditions are quite different today as I step into the early November woods for a walk. With the leaf drop and the not-yet snow cover, the forest is very open, and I see plenty of things that were ...

The black tips on leaves can be found on many different species of trees — not just oaks — but they transmit the pathogen ...

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

Royer Vineyard is best known for: growing some of the best white wine grapes in Oregon, with an emphasis on chardonnay. The ...

Additionally, infected oaks can spread the disease to other trees through underground root connections or grafts, creating an ...

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