More than 500 native plants in San Diego County are held in a Native Seed Bank at the zoo. Those seeds are dried down to a ...

The San Diego Zoo Wildlife Alliance reached a historical milestone after adding an endangered plant species to its Frozen Zoo ...

Trees that witnessed key moments in history, provided inspiration to writers and played supporting roles onscreen made this ...

I noticed a lot of small twigs with leaves on them under my oak tree and became concerned about the oak. It is a large, ...

"I applaud you for spending the effort." Gardener shares stunning photos of gargantuan effort to save oak tree: 'I spent my ...

The children were part of the Capitol Junior Rangers program, a statewide initiative for children aged 7 to 12 to learn about California’s biodiversity.

Galls are abnormal growths and can be caused by a variety of different organisms, including insects and mites, and ...

Galls on oak leaves are harmless growths caused by specific insects. They have different shapes depending on the insect species causing the gall.

Plans to cut down a historic 60ft tall oak tree over fears it could crush nearby thatched homes were axed after dozens of objections. At a South Derbyshire District Council meeting this week plans ...