Wherever trees grow, sooner or later their leaves get wet. For trees in wet environments, this can be a problem if films of water cover their stomata. These tiny pores allow carbon dioxide to enter ...

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 ...

A study found that redwood trees have two different leaves that serve different functions. The peripheral leaf, left, focuses on photosynthesis while the axial leaf is devoted to absorbing water.

ST. LOUIS — Autumn’s paintbrush is starting to spread its colorful hue across the St. Louis area. Reds, pinks, oranges and yellows are starting to pop up on trees, giving leaf peepers a fall foliage ...

Have you ever wondered why the leaves change color during fall? Well there's a scientific word for this process called, photoperiodism. It's the organism's response to seasonal changes in day length.

Q: My homeowners association requires a replacement for a dying plum tree with something similar. I want to plant a more drought-tolerant, low-maintenance small tree. Any suggestions? A: I am guessing ...

If your tree is already turning its leaves for the fall, it's probably not the seasons, it's stress. The first day of fall isn't until Sept. 22, but some trees are already starting to show off their ...

Redwood trees have two types of leaves, one to make food and the other to absorb water, found a new study. It's the first study to estimate whole-crown water absorption in a large, mature tree. The ...