Few average Joes can correctly identify every species of oak growing in North America. That’s the kind of Final Jeopardy-level knowledge typically reserved for foresters, wildlife biologists, and very ...

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 ...

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 ...

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 ...

Many plants are poisonous to humans and animals alike, which is why it’s important to spot them before it’s too late. As more people venture outside to enjoy warm weather, knowing how to identify and ...

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 ...

Climate warming plays a larger role than plant genes in influencing the number and identity of fungal species on oak leaves, especially in autumn. This research by ecologists sheds light on how ...

DALLAS — The winter freeze this February was a tough test for trees across North Texas, and we're still seeing the impact months later. If your trees appear to be dying now, there's a good chance it ...

Three of my most prized trees are the oaks we planted in our front yard shortly after we moved. They share our front yard with a black gum (Nyssa sylvatica), red twig dogwoods (Cornus sericea), witch ...

Q: I noticed little fuzzy balls attached to some fallen oak leaves. Also, I keep picking up brown marble-size balls in the yard. They are not acorns. Do you know what they are? A: Odds are what's ...

QUESTION: I have a beautiful water oak that's about 60 years old. The tree has been losing many leaves over the last couple weeks. The falling leaves have brown wrinkled spots on them. Is there any ...

This is the time of year when people tend to walk through the woods, and come into contact with plants that may not react well with their skin, including poison ivy and poison oak. It is good to know ...