We do carry products with
Imazapyr in it. The products are not necessarily labeled for phragmites so we are unable to recommend items where items are not specifically on the label. We do have
Rodeo Herbicide. It is labeled for partial control of phragmites in southeastern states. This is a glyphosate product and could potentially kill what it touches. We would recommend solely spraying the phragmites. You will use 2 2/3 fl. oz. per gallon of water.