Arbor Day is the day we are supposed to plant trees, and help keep trees on the earth. Julius Sterling Morton created Arbor Day. The first Arbor Day was on April 10, 1872, but it wasn't recognized as a holiday until the 1920's. 36 or so countries celebrate a similar holiday, but not all of them celebrate it on the same day as in the US. Julius was a famous icon for agriculture because of this, and the fact that he was the 3rd Secretary of Agriculture. Morton was determined to instruct people on the newest ways of farming and forestry. Julius had a fascination with trees, especially the family favorite, apple trees. He helped change the way farmers farmed, helped create more national forest reservations.