The wasps are a natural predator of the emerald ash borer, an invasive beetle that has killed tens of millions of ash trees in Illinois and 12 other states. "The borer... makes a zig-zag pattern," said Speckan.How effective is emerald ash borer treatment?
Treatment for Emerald Ash Borer - Healthy Tree. If your tree is important and valuable, and does not have a visible infestation, protecting from Emerald ash borer is both affordable and effective. Optrol ™ is a professional strength insecticide for treating emerald ash borer that can be mixed with water and poured at the base of the tree.Is the emerald ash borer a lethal beetle?
Emerald ash borer adult beetles fly during the summer and lay eggs on ash trees. Once hatched, the larvae Emerald ash borer is a lethal threat to ash in our state.What damage does the emerald ash borer do?
The emerald ash borer (EAB) is an exotic insect that is destructive to ash trees (Fraxinus species). The adult stage causes minor feeding damage to ash foliage. The larval stage feeds beneath the bark and disrupts water and nutrient flow within the tree, which leads to tree death.