In the years following that first Arbor Day, Morton's idea spread beyond Nebraska with Kansas, Tennessee, Minnesota and Ohio all proclaiming their own Arbor Days. Today all 50 states celebrate Arbor Day although the dates may vary in keeping with the local climate. (State Arbor Days) At the federal level, in 1970, President Richard Nixon proclaimed the last Friday in April as National Arbor Day. Arbor Day is also now celebrated in other countries including Australia. Variations are celebrated as 'Greening Week' of Japan, 'The New Year's Days of Trees' in Israel, 'The Tree-loving Week' of Korea, 'The Reforestation Week' of Yugoslavia, 'The Students' Afforestation Day' of Iceland and 'The National Festival of Tree Planting' in India. Julius Sterling Morton would be proud. Sometimes one good idea can make a real difference.

For the homeowner, Arbor Day is an excellent opportunity to take stock of the trees on your property and plan for the future. Inspect your trees. Note any broken branches or evidence of disease or insect infestation. Think about how planting new trees might improve the look of your property or provide wind or heat protection. Take a trip to your local nursery to see what's available and to get new ideas. Walk around your neighbourhood. Are there any public areas where tree planting or tree maintenance might make a real difference to your community? Talk with your neighbours. Find out what their opinions are. And, oh yes, plant a tree.