If the leaves of your citrus tree are yellow, it’s a sign that they are deficient in the minerals — nitrogen and magnesium t ...

Yet only “Gray Tree” has scale-invariant branch diameters. When Mondrian removes the scale invariance in “Blooming Apple Tree ...

The best time to prune most of our deciduous trees and shrubs is late winter. One reason is that insect pests and plant ...

Altadena residents and arborists are sounding the alarm about protecting the town’s trees as crews get set to begin phase two ...

Today, there are 11 dawn redwoods on the Michigan Big Tree Register, a program of the Michigan Botanical Society. The ...

This phenomenon, called marcescence, adds a unique dimension to the winter landscape, and gives me something to ponder while ...

Researchers found a hidden mathematical rule in tree-like art. Branch thickness follows a predictable ratio, making trees recognizable.

How far would leaf-eating insects go to dine on their favorite food? Perhaps the other side of the world, according to ...

When you've always known deciduous trees to drop their leaves in winter, seeing one that hasn't can be unsettling. Here's why ...

The scale invariance in branch diameter dictates how much smaller a limb should be as it branches and how much investment a tree makes in a few thick branches versus many thin ones. Trees have evolved ...

Now is the time for some winter pruning on ornamental shrubs and trees. From December to late March is the perfect time to ...