Have you ever noticed a tree with branches that are cut back to its trunk and wondered what it means? Here's what's behind this pruning practice.

Scientists discover a giant thousand-year-old tree called Tessmannia princeps, a new species that reaches 131 feed high and 3 ...

Researchers identified areas of Moran Lake where trees are particularly vulnerable to damage from storms, along with areas ...

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

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 ...

A small invasive beetle is causing big problems for California's oak trees and has prompted officials to issue an urgent ...

One person identified non-native English ivy, a common invasive species in the United States, on a large oak tree.

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

But, what about species that cause negative impacts – invasive species? When it comes to planting trees, knowing what category a tree species is will help in aiding the health of the overall ecosystem ...

It grows in the shade of mid-succession trees, provides deep shade at maturity, and inhibits growth of earlier succession flora as well as invasive plants. In New Jersey, beech occurs as late ...

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, ...

Pine trees are one of the most common coniferous species in North America. Learn how to identify the types found in the United States and Canada.