Scientists are investigating the reasons some plants still wear last season’s tattered clothes.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." The arrival of a new year may be brimming with new opportunities, but finding a big, beautiful, and live ...

Add Yahoo as a preferred source to see more of our stories on Google. For broad-leaved trees like the holm oak, which grows in Mediterranean climates with dry summers and rainy winters, this seasonal ...

Q: Is it common for the chitalpa tree to partially defoliate in the summer? What would be the optimum amount of water for 15-foot chitalpa tree growing in Kingman, Arizona? A: Chitalpa, like some ...

Spotting a few brown or dying leaves on your tree can be distressing. While it's probably not a reason to panic, it is a sign that you should take a closer look at your tree's health. A lot of ...

MINNEAPOLIS — The latest map shows fall colors are just starting to emerge across parts of northern and southern Minnesota. That means it's only a matter of time before the leaves drop. You may think ...

Have you ever noticed that when you cut down a tree — or a tree dies suddenly — the dead leaves stay on the tree for a long time? The leaves go from green to brown, but stay on the dead tree branches.

Q: My evergreen oak tree is more than 20 years old. Some of the leaves are turning yellow and dropping. While there is some new growth, it is not as vigorous as prior years. The tree is on drip ...

If you walk much in the Seattle area, you may notice an occasional sweet smell this time of year. Some say it’s like cotton candy or caramel. This fragrant aroma comes from the fallen leaves of ...

Powdery mildew on Tatarian maple leaves. Photo courtesy Getty Images. Welcome to our tree column, “Ask your local arborist.” Each month, arborists from the Davey Tree Expert Company in Menlo Park ...

Larger leaves favor photosynthetic production of a sugar-rich fluid to nourish the tree, but if the tree is too tall, the nutrient flow is slowed. Why are the leaves on the tallest trees all about the ...