DNR investigating infected plants sold in Indiana
The Indiana Department of Natural Resources confirmed more than 70 Walmart stores and 18 Rural King stores in the state have received rhododendron plants infected with sudden oak death (SOD), a fungal pathogen that kills oak trees. Shipments containing infested material were sent to nine other states as well.
Workers from the Department of Entomology & Plant Pathology have been visiting stores across Indiana to destroy any stock that has been found infested and quarantine any stock that is symptomatic. DNR says the division has made this its top priority.
The DNR has destroyed approximately 1,500 infested rhododendron so far and pulled another 1,500 from stores. The DNR has also ordered these stores to stop selling rhododendron until further notice. Any quarantined material not infected will be released following testing at Purdue University.
The DNR is also following up with homeowners that have called in to say theyve purchased material that they believe is infested or are seeing signs/ symptoms of sick trees in the environment.
DNR officials say SOD has killed large tracts of oaks on the West Coast. The disease can kill standing oak trees, which could happen if SOD-positive rhododendron were planted within approximately six-feet of a standing oak.