Do you think the you have the largest Ohio buckeye tree in Warren County, OH? Enter to win our Biggest Tree Contest!

The Ohio Buckeye (Aesculus glabra) was officially designated the Ohio state tree in 1953. Lawmakers passed the formal legislation that year to coincide with the state's 150th anniversary of statehood. So
we wanted to highlight it during America's 250th birthday!

Native to North America, the Ohio buckeye tree produces a shiny brown nut with a light spot—looking like a deer’s eye, which is how the tree got its name. It is found primarily as an understory tree in the western half of Ohio, where the soils are more alkaline in pH. Trees found in the open may reach 60 feet tall by 30 feet wide, but as a native understory it is often half that size. As a member of the horsechestnut family, it is related to other horsechestnuts
and buckeyes. Ohio buckeye has opposite, palmately compound leaves, each with five leaflets. It has showy yellow-green flowers in early spring, and the fruit usually contain one seed (or nut) enclosed in a slightly spiny, golden-brown husk.

HOW TO ENTER:
Measure the circumference of your tree at four feet up from the base and make a rough estimate of the tree’s height. Enter the information with your contact details in the form on this page. Deadline to enter is July 17, 2026.

If your entry is among the largest we will contact you to make arrangements to have the tree measured by our judges. 

Winners will receive a prize and be recognized at the Warren SWCD Annual Meeting in August!

ODNR TREE GUIDE: Ohio Buckeye