Dustin Vande Hoef
Iowa Department of Agriculture and Land Stewardship

Articles by this author:

Emerald ash borer has been positively identified from a tree in central rural Louisa County. This exotic pest kills several species of ash and is considered one of the most destructive tree pests ever seen in North America. Iowa now has 32 counties with confirmed infestations.  

Beneficial insects that will help battle the emerald ash borer, a highly destructive pest of ash trees, will be released in Jefferson County. Over the next few weeks several thousand stingless, parasitic wasps will be released at Whitham Woods near Fairfield, Iowa. This is the first release of the natural enemies of EAB in Iowa.

The emerald ash borer (EAB), which has already been confirmed in nearly one-third of Iowa’s counties, has been discovered in Decorah.

Emerald ash borer, a tree-killing pest of ash trees, has been confirmed in Iowa City. The discovery was made on the University of Iowa campus.

A destructive insect of ash trees has been confirmed in southern Cedar Rapids. The emerald ash borer was discovered at an Iowa interstate rest area along I-380 approximately one-half mile north of the Johnson County line.

Farmers are reminded to wait until soil temperatures remain below 50 degrees Fahrenheit before applying anhydrous ammonia (NH3) fertilizer this fall. Harvest is progressing rapidly in many parts of the state and officials with the Iowa Department of Agriculture and Land Stewardship and Iowa State University Extension and Outreach said that waiting can help reduce nitrogen loss and better protects the environment.

The emerald ash borer, a highly destructive insect of ash trees, has been confirmed in Dubuque, Iowa. Twenty-eight of Iowa’s counties have now been confirmed positive.

The emerald ash borer, a destructive and invasive insect of ash trees, has been discovered in central rural Montgomery County. Iowa’s growing number of counties with confirmed detections has now reached 27. 

Emerald ash borer has been confirmed in Fort Madison, bringing the number of confirmed counties in Iowa to 26. This makes Lee County the latest victim of EAB, a highly destructive insect of ash trees.

A new detection of emerald ash borer has been positively identified after a larva sample was collected from a city-owned tree in Grinnell on June 16, 2015. This brings the total of confirmed infested counties to 25 since EAB was first discovered in Iowa in 2010. This beetle kills ash tree species.