Arbor Day Dates Across America

National Arbor Day is always celebrated on the last Friday in April, but many states observe Arbor Day on different dates throughout the year based on best tree planting times in their area. Find out when your state celebrates.

Alabama Arbor Day:

Last full week of February

Alaska Arbor Day:

Third Monday in May

Arizona Arbor Day:

Last Friday in April

Arkansas Arbor Day:

Third Monday in March

California Arbor Day:

March 7-14

Colorado Arbor Day:

Third Friday in April

Connecticut Arbor Day:

Last Friday in April

District of Columbia Arbor Day:

Last Friday in April

Delaware Arbor Day:

Last Friday in April

Florida Arbor Day:

Third Friday in January

Georgia Arbor Day:

Third Friday in February

Hawaii Arbor Day:

First Friday in November

Idaho Arbor Day:

Last Friday in April

Illinois Arbor Day:

Last Friday in April

Indiana Arbor Day:

Last Friday in April

Iowa Arbor Day:

Last Friday in April

Kansas Arbor Day:

Last Friday in April

Kentucky Arbor Day:

First Friday in April

Louisiana Arbor Day:

Third Friday in January

Maine Arbor Day:

Third Full Week in May

Maryland Arbor Day:

First Wednesday in April

Massachusetts Arbor Day:

Last Friday in April

Michigan Arbor Day:

Last Friday in April

Minnesota Arbor Day:

Last Friday in April

Mississippi Arbor Day:

Second Friday in February

Missouri Arbor Day:

First Friday in April

Montana Arbor Day:

Last Friday in April

Nebraska Arbor Day:

Last Friday in April

Nevada Arbor Day:

Last Friday in April

New Hampshire Arbor Day:

Last Friday in April

New Jersey Arbor Day:

Last Friday in April

New Mexico Arbor Day:

Second Friday in March

New York Arbor Day:

Last Friday in April

North Carolina Arbor Day:

First Friday following March 15

North Dakota Arbor Day:

First Friday in May

Ohio Arbor Day:

Last Friday in April

Oklahoma Arbor Day:

Last Full Week of March

Oregon Arbor Day:

The month of April

Pennsylvania Arbor Day:

Last Friday in April

Rhode Island Arbor Day:

Last Friday in April

South Carolina Arbor Day:

First Friday in December

South Dakota Arbor Day:

Last Friday in April

Tennessee Arbor Day:

First Friday in March

Texas Arbor Day:

First Friday in November

Utah Arbor Day:

Last Friday in April

Virginia Arbor Day:

Last Friday in April

Vermont Arbor Day:

First Friday in May

Washington Arbor Day:

Second Wednesday in April

West Virginia Arbor Day:

Second Friday in April

Wisconsin Arbor Day:

Last Friday in April

Wyoming Arbor Day:

Last Monday in April

Guam Arbor Day:

Second Tuesday in October

Northern Marianna Islands Arbor Day:

October 1

Puerto Rico Arbor Day:

Last Friday in September

U.S. Virgin Islands Arbor Day:

Last Friday in September


Find Out When People Across the Globe Celebrate Trees  

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During the week of Arbor Day, your social post can turn into trees planted! The Arbor Day Foundation will plant one tree for EACH Instagram, Twitter, or Facebook post with the hashtag #ArborDay, up to 75,000 trees. What's more, Kimberly-Clark is matching our efforts, so up to 150,000 trees will be planted.


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Find Celebrations

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150 Ways To Celebrate Trees
on Arbor Day

This year marks the 150th anniversary of Arbor Day, and we want all of you to get involved in the celebration…

Read More  

The Arbor Day Foundation has been inspiring people to plant, nurture, and celebrate trees since 1972. And that simple mission has had a global impact. The Foundation has grown over the last five decades to become the largest member nonprofit organization dedicated to planting trees, planting and distributing nearly 500 million trees worldwide.

Learn More