When killing cattails, it's best to spray them in the Fall. Don't forget to remove the catkins before they blow apart and scatter new seeds all over your pond. Cut them off, shove them in a plastic bag and put them in the trash. I collect them in a 5 gal bucket as I cut them off the plants, then dump that bucket into a heavy duty garbage bag.

Catplex is just a 53% glyphosate, so any other pond rated glyphosate will do just as well.

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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).