Spring Grove is home to nearly 30 Ohio Champion Trees, more than any other one location in the state! Enjoy this summer evening by riding on our open-air tram listening to our expert horticulture staff talk about the some of the largest trees in the state. Pre-Registration is required. Registration will open on June 28, 2023 at NOON. Beginning in 2023, there will be a $5 fee for Arboretum events which will go to the Heritage Foundation.