If the lilypad roots don't re-sprout again, I'll bet the 1,000's of seeds in the pond will.......

For treatment of the lilies, any glyphosate based herbicide that is labled for pond use, or for use around water, coupled with a good surfactant will work to kill them. It may take a couple of treatments to kill the ones that come back from seed, but if you keep at it, you will control them.


www.hoosierpondpros.com

[Linked Image from lh6.ggpht.com]
http://www.pondboss.com/subscribe.asp?c=4
3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).