We have a marsh and cattails have been a big problem over the past 13 years. We spray every year and have tried different chemical formulations throughout the years with different active ingredients. I have found some glyphosate formulations work pretty darn good.... Rodeo, Aquamaster and Touchdown work well. I have tried imazamox with an aquatic surfactant and got nice results as well... I think we used Clearcast. Used Habitat as well and got nice results but it doesn't do well on duckweed and watermeal. What we find works is an initial application of Habitat and then manage with glyphosate and 2,4-D and we have been managing our marsh like this for 3 years...going on 4 and it looks nice.
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