Maryland Celebrate Arbor Day! Arbor Day was started in the state of Nebraska in 1854 by Julius Sterling Morton. Nationally Arbor Day is celebrated on the last Friday in April. Share this:Click to share on X (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Reddit (Opens in new window)Click to email a link to a friend (Opens in new window)Click to print (Opens in new window) Joy HenryJoy Henry is a journalist in the Capital News Service Social Journalism bureau. She has worked as a Floor Director for “Wake Up Washington” on WUSA*9, and as an intern in the web department at WJLA.com. April 28, 2017