Arbor Day originated in Nebraska City, Nebraska on April 10th, 1872. On that first Arbor Day there were approximately 1 million trees planted. J. Sterling Morton, who served as President Grover Cleveland's Secretary of Agriculture, was the founder of Arbor Day. This holiday is meant to encourage people, whether in groups or as individuals, to plant and care for trees. From its beginnings in Nebraska, Arbor Day has grown to become a recognized holiday in many countries around the world.