The bark of a tree is its own protection against the weather. While we shrug on a coat when it’s wet or cold, a tree will grow its own to insulate itself, keeping moisture out when it’s raining and in ...

If your yard could use more shade and needs it pronto, here are some of the best fast-growing shade trees to plant in the ...

This story appears in the December 2012 issue of National Geographic magazine. On a gentle slope above a trail junction in Sequoia National Park, about 7,000 feet above sea level in the southern ...

The long needles cause a very tufted look to the tree canopy. Bark on the red pine is scaly and red-orange in color in younger trees and platy and reddish brown in older trees. Cones are egg-shaped, ...

Last summer, I started noticing ridges on the tree trunk and branches. Is this normal? If not, is there anything I can do about it? — Heidi G. A: Good news — the ridges on the twigs and ...