Oak trees have been around for more than 50 million years, with individual trees easily living 1,000 years. One of the oldest oak trees in the U.S. is believed to be at least 2,624 years old. The ...

Many coast live oak (Quercus agrifolia) trees are showing unusual browning in their canopies in the last month or two. If you look carefully, you may see small, crescent-shaped galls forming on the ...

While oaks are typically distinguished by their lobed or toothed leaves, one Indiana species has entirely smooth leaf margins.

Oak trees in and around Lawrence are reportedly dropping more than acorns and leaves this fall, and individuals who plan to spend time outdoors should be on the lookout. Oak leaf itch mites — tiny ...