Arbor Day Dates Across America

National Arbor Day is the last Friday in April, but many states observe Arbor Day on different dates according to their best tree-planting times. Check the map below to find out when your state or territory observes Arbor Day.

• Arbor Day around the world.
• How to celebrate Arbor Day.
• Volunteer Tree Planting Events.

State Arbor Day Dates