A birdhouse hung on a young tree branch, does not move up the tree as the tree grows.

Well-maintained trees and shrubs can increase property value by up to 14%.

Most tree roots are in the top 12 inches of soil.

One large tree can provide a supply of oxygen for two people.

Most trees do not have a tap root.

A mature tree removes almost 70 times more pollution than a newly planted tree.

Trees are the largest living organisms on earth: some coastal redwoods are more than 360 feet tall.

Every state has an official State Tree. Virginia adopted the flowering dogwood Cornaceae Cornus floridaas the State Tree on February 24, 1956.  The dogwood is well distributed throughout the...

Trees properly placed around buildings can reduce air conditioning needs by 30 percent and save 20-50 percent in heating energy.

In one day, one large tree can lift up to 100 gallons of water out of the ground and discharge it into the air.

Trees are some of the oldest living organisms on earth: some bristle-cone pines are thought to be more than 5000 years old.