Arbor Day is a nationally celebrated observance that encourages tree planting and care. National Arbor Day was founded by J. Sterling Morton in 1872 ("The History of Arbor Day"). In Greenville, essays are submitted by fourth and fifth graders from Greenville elementary schools. The winners read their essays at the Arbor Day celebration. They receive ReLeaf medallions, certificates, t-shirts, and a one-year family membership. ReLeaf of Greenville held it's 2011 Arbor Day celebration at Greenville Christian Academy on Friday, April 29, 2011, at 10:00 AM. To commemorate the occasion, the winners of the ReLeaf essay contest read their essays on the topic of Urban Forestry in Greenville. Other Arbor Day slideshows and essay winners also are listed below.