About National Arbor Day
The customary observance is to plant a tree. On the first Arbor Day, April 10, 1872, an estimated one million trees were planted. Became a national holiday in 1972. Arbor Day is Americas oldest environmental holiday and celebration. It is celebrated on the fourth Friday in April every year. It is a tree-planting holiday that was founded in Nebraska in 1872. It was created to encourage people to plant trees in Nebraska, as it was largely a treeless state.
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