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 ...

A cedar tree climbed by The Beatles, an oak that may have inspired Virginia Woolf, and a lime representing peace in Northern ...

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, ...

Q • My oak trees have more large galls than I’ve ever seen on them, and I’m worried about their health. What can I do about ...

UC Santa Cruz tree worker Isaac Estrada works high above McLaughlin Drive next to the Core West Parking Structure as the UCSC tree crew removes dead branches from a canyon live oak as they perform ...

Have you noticed discoloration on your maple tree leaves this year? You aren't the only one. Here's what you should know ...

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.

When hiring a tree care professional, use caution and stick to reputable companies, says MU Extension's Joni Harper.

Trees are extremely important to the environment, but developers in West Meade are cutting them down to build new homes.