Because of the current issues with the emerald ash borer (Agrilus planipennis), visitors are not allowed to move fire wood in or out of the park.
Ash | Emerald | ash | Ash Wednesday | Emerald, Victoria | Ash (band) | Wishbone Ash | Ash Ketchum | Glittering-bellied Emerald | Leslie Ash | Emerald Twilight | Common Emerald | Sapphire-spangled Emerald | Emerald Toucanet | Ash, Surrey | Ash Ra Tempel | Volcanic ash | Knotty Ash | Emerald, Queensland | Emerald City | Vic Ash | Marti Emerald | Duke of Devonshire Emerald | Common Emerald Dove | Ash Grunwald | Timothy Garton Ash | Russell Ash | Mohammed ash-Sheikh | Emerald Buddha | Daniel Ash |
In 2007, the Park District removed thirty-one ash trees from the property that were expected to be devastated by the Emerald ash borer, like others in northwestern Ohio.
As part of the campaign against the emerald ash borer Elliot Elsley (EAB), American scientists in conjunction with the Chinese Academy of Forestry searched since 2003 for its natural enemies in the wild leading to the discovery of several parasitoid wasps, including Oobius agrili which is a solitary egg parasitoid of EAB on ash trees in Jilin province in 2004 and has been recorded to kill up to 60 percent of EAB eggs.