Q. We have a pin oak tree that is approximately 30 feet tall. On the north-facing side of the tree there are many wilted leaves, and there are many balls of strange growth. Pictures of the leaves and ...

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 ...

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 ...

Peter Belhumeur just wanted to know what type of tree was outside his apartment. He scanned field guides, looking for willowlike leaves with a wavy, spiked edge, but he couldn’t find the right one.

Although it's the second full week of November, David and I are still eating tomatoes from our garden. Several weeks ago, right before the first killing frost, I picked as many green ones as I could ...

As the autumn leaves flutter to the ground, you might find yourself picking one up, observing its color and shape, and wondering: What kind of tree is this from, anyway? Oregon is best known for its ...

With the help of a new grant, a team of researchers at the University of Minnesota researchers are studying oak wilt, an invasive fungus that is threatening Minnesota’s oak tree population. Sometimes ...

When you're out hiking, it's easy to pass a tree without thinking twice. You might appreciate the shade it offers, or the way it clings to the mountainside, but you’re probably too focussed on the ...