Arbor Day is a nationally-celebrated observance that encourages tree planting and care. Founded by J. Sterling Morton in Nebraska in 1872, National Arbor Day is celebrated each year on the last Friday in April. Morton first proposed Arbor Day as a tree planting holiday in 1872 at a meeting of the Nebraska State Board of Agriculture. On the first Arbor Day, April 10 1874, prizes were offered to counties and to individuals for properly planting the largest number of trees. It was claimed that more than 1 million trees were planted in Nebraska on that day.