Ash Tree Treatment at Indiana State Parks

Emerald Ash Borer (Agrilus planipennis Fairmaire) is an exotic beetle that feeds on ash (Fraxinus sp.) trees. Larvae feed in the phloem and outer sapwood, producing galleries that eventually girdle and kill branches and entire trees. This native of Asia was first confirmed in Indiana in 2004. Since that time, this forest pest has spread throughout Indiana and has been detected in all 92 counties.

To protect healthy ash trees, our staff treats about a hundred select ash trees on a three-year rotation in Indiana State Parks. The insecticide is injected into the base of the tree where it moves throughout the tree. If the pest is present in the tree, the treatment will kill the insect and protect the tree.

The photo shows Indiana State Park Natural Resources Manager Anthony Sipes treating an ash tree at Turkey Run State Park. Each of the treated trees are numbered to track their status and health each rotation.

If you see an ash tree, stop to appreciate its towering beauty and its welcoming shade. More information of the Emerald Ash Borer.