Tiny Wasps Released in Minnesota to Combat Emerald Ash Borer Threat
Tiny wasps have been released in Minnesota as part of an effort to combat the emerald ash borer threat and protect ash trees.
Minneapolis St. Paul, MN, August 26, 2026 — Efforts to protect Minnesota’s ash tree population are underway with the recent release of tiny wasps, introduced as a biological control agent against the invasive emerald ash borer (EAB).
The introduction of these parasitic wasps is part of a broader strategy aimed at mitigating the destructive impact of the emerald ash borer, a non-native insect that has posed a significant threat to ash trees across North America. The small wasps, which are native to the emerald ash borer’s original habitat, are known to target the pest’s larvae and eggs, offering a natural method for population control.
The specific species of wasps used and the precise locations and dates of their release in Minnesota were not detailed. However, the objective is to establish these beneficial insects within the state’s ecosystem to help suppress emerald ash borer populations. This approach complements existing efforts which often include monitoring, public awareness campaigns, and sometimes the removal of infested trees.
The emerald ash borer, identified in North America in 2002, attacks ash trees by boring under the bark, disrupting the flow of water and nutrients. This typically leads to the decline and eventual death of infested trees. Without natural predators or effective control measures, EAB can decimate ash tree stands in urban and rural areas.
The release of these tiny wasps marks a biological intervention intended to address the threat by introducing a natural predator of the emerald ash borer. Authorities involved in the effort hope this will aid in preserving the health and longevity of ash trees throughout Minnesota, contributing to forest health and biodiversity.
Story summarized from the original created by Corin.Hoggard@fox.com (Corin Hoggard) on www.fox9.com, see more information here.
