National Arbor Day is celebrated the last Friday in April, although many states celebrate Arbor day on different dates depending on the best tree planting times in their area. The day is set aside to plant trees and raise awareness of the important role they play in the environment.
The first American Arbor Day was celebrated in Nebraska in 1872. One hundred years later, the nonprofit Arbor Day Foundation was formed to inspire people to plant, nurture and celebrate trees. The Foundation plants and distributes more than 10 million trees each year. Its Time for Trees initiative has the goal of planting 100 million trees in forests and communities around the globe by the 100th anniversary of Arbor Day in 2022.