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 ...

There are 10 species of oak listed in John Thomas Howell’s “Marin Flora.” If you are trying to identify oaks you have to be a keen observer. Does the tree lose its leaves in the fall (deciduous) or ...

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 ...

So said the eminent Harvard botanist Asa Gray, on page 451 in his encyclopedic “Lessons in Botany and Vegetable Physiology,” a book published in 1872. I got my copy at an old bookstore several years ...

The Journal of the Torrey Botanical Society, Vol. 148, No. 2 (APRIL-JUNE 2021), pp. 85-96 (12 pages) Three oak species dominate the mature montane cloud forests in the Talamanca mountain range, Costa ...

Oak leaf blister is caused by a fungus that attacks most species of oaks found in Louisiana. It can be particularly bad when the weather is cool and wet. (LSU AgCenter photo) Oak leaf blister, a ...

Q. I have a large number of oak leaves and I am wondering if I can use them in my compost. A. I am so glad that you are thinking of composting your oak leaves and not burning them. Burning leaves ...

Q. I have a large number of oak leaves that have accumulated in my yard after this last round of storms. I would like to compost them but have been told they are toxic to microorganisms and they ...

SPRINGFIELD, Mo. (KY3) - In a collaborative effort with the Missouri Department of Conservation (MDC) Forest Health Program, the MU Plant Diagnostic Clinic announced it will provide free testing ...