Experts say the hybrid is aggressive and prolific and chokes up ecosystems.
Work is underway to restore wetlands by removing the two problem species, the hybrid and the invasive cattails.
Shane Lishawa is on the research faculty at Loyola University Chicago. He says the invasive species has been around for a while.
“Most likely came from the east coast, from the Atlantic coast, and spread across the U.S. basically with European settlement.”
Lishawa says efforts are being made to not only remove the cattail, but to use the biomass from the cleanup to produce energy.