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

The signs are already here: scarlet flashing on sumac shrubs, a reddish tinge in some kinds of maples, yellow leaves beginning to flutter down. The colors are telling us fall is here. Typically, the ...

Before the advent of pumpkin spice lattes and Halloween decorations, the most reliable indication of autumn’s arrival lay in the tree canopy as its greens gave way to yellows and reds and its leaves ...

Fall is here and leaves across Wisconsin are starting to turn hues of orange, yellow and red. But you might be wondering — why do some leaves change color in the fall? To get to the bottom of fall ...

Adding one or two trees with red leaves to your plot is a wonderful way to introduce beautiful structure, ornamental detail and vibrant color to your plot. Planting a tree in your garden is a ...

How do you cool yourself on a hot day? Perhaps you find shade, switch on a fan or retreat to air conditioning? But spare a thought for tropical forest trees. As the climate warms, they must either ...

As the outside world normally is around this time each November, things have changed a lot. Many trees are already devoid of leaves while others are still covered with colorful ones. When the ...

Conifers are generally better than broadleaved trees at purifying air from pollutants. But deciduous tree may be better at capturing particle-bound pollution. A new study led by the University of ...

There are some 73,000 species of trees on Earth, according to one recent estimate. The writer Daniel Lewis zeroed in on a tiny fraction of them for his new book, "Twelve Trees." Each chapter is one ...