Habitat is the herbicide to use along a pond edge if you want to denude the edge. Cattail, willow, grass and practically every other plant will be affected, and the control seems to span months. In early summer, I applied Habitat to the pond edge and around seldom used farm equipment. No regrowth of any plant species has occurred. While Habitat acts more slowly than glyphosate, the end result seems more dramatic. I don't know how mats of pondweed, smartweed, water primrose or waterlily would be affected, but I certainly wouldn't expect plant survival.
Habitat is relatively expensive but well worth the price if you want absolute plant control.
