(Radio Iowa) – There are now just two Iowa counties without an emerald ash borer infestation. The Iowa Department of Agriculture says the wood-boring beetle has been confirmed for the first time in Plymouth County after a tree service found evidence of the bug in an ash tree in Remsen. Plymouth is the 97th Iowa County to have a confirmed infestation, and that leaves just Emmet and Palo Alto County without the invasive beetle. E-A-B was first discovered in Iowa in Allamakee County in 2010.

The Ag Department says trees typically die within two to four years after becoming infested.