The tallest, broadest, and oldest trees in Ohio aren’t just hidden in deep wilderness—many are in our parks, backyards, and town squares. These living legends are officially cataloged and celebrated through the Ohio Champion Trees Database and its companion Ohio Champion Trees Map, transforming a simple walk in the woods into a treasure hunt for natural history.
What Are Ohio Champion Trees?
An Ohio Champion Tree is the largest known living specimen of its species within the state. This title isn’t awarded lightly; it’s determined by a precise, nationally recognized points formula maintained by American Forests that considers three key measurements:
- Trunk Circumference (in inches): Measured at 4.5 feet above the ground.
- Height (in feet).
- Average Crown Spread (in feet).
The total points are calculated as: Circumference + Height + (¼ of Crown Spread). The tree with the highest score for its species earns the champion title. This program, largely fueled by a passionate network of volunteer “Big Tree Hunters,” creates an invaluable record of Ohio’s natural heritage.
Navigating the Ohio Champion Trees Database and Map
The official Ohio Champion Trees Database is a digital registry managed by the Ohio Department of Natural Resources (ODNR) Division of Forestry. It lists champions by species, along with their vital statistics and location details.
The interactive Ohio Champion Trees Map brings this database to life visually. Here’s how you can use these powerful tools:
- Plan a Visit: Search by county or species to find champions near you or along a planned route. The map often indicates if a tree is on public land, making it a perfect destination for a hike or a scenic drive.
- Conduct Research: Filter by tree species or measurement scores. The data is used by ecologists, students, and conservationists to study forest health and the impacts of environmental changes.
- Start Your Hunt: Use existing champion measurements as a benchmark. If you find a potential contender, you can nominate it to the program.
Respectful Exploration: Always check the map for access notes. Many champion trees are on private property. Never trespass; viewing is only possible with the landowner’s explicit permission.
Notable Ohio Champion Tree Species
Here are a few examples of species with notable champion specimens in Ohio, showcasing the state’s diverse arboreal heritage:
The Vital Role of Champion Trees: Beyond Size
These titans are far more than just record-holders. They are critical pillars of their ecosystems and our shared history.
- Ecological Powerhouses: Large trees provide immense habitats for wildlife, capture significant amounts of carbon, improve air and water quality, and help stabilize the soil.
- Living Historical Records: Many champion trees have stood for centuries, witnessing Ohio’s transformation firsthand. They serve as living monuments to the state’s natural and cultural past.
- Conservation Beacons: Identifying and celebrating these trees raises public awareness about the importance of tree preservation and informed urban forestry planning.
How You Can Get Involved
The champion tree program thrives on public participation. You can help by:
- Nominate a Tree: If you find a large tree, measure it using the official ODNR guide and submit a nomination. Detailed photos and location information are key.
- Join the Community: Connect with groups like Big Trees Ohio, a volunteer network dedicated to finding, measuring, and appreciating Ohio’s largest trees.
- Explore and Advocate: Visit champion trees on public land, learn their stories, and become an advocate for protecting mature trees in your own community.
By exploring the Ohio Champion Trees Database and Map, you’re not just looking at a list of big trees—you’re accessing a living map of Ohio’s natural legacy and contributing to its preservation for generations to come.

