We have been fighting a losing battle w/water primrose all summer. We've been removing it manually, but I think we've just managed to spread it even more. Time to get the chemicals. Is it too late in the year to do it now, or should I wait for warmer temps? I know many products are more effective w/warmer temps than with cooling ones, but I know nothing about fighting aquatic weeds. I've also got phragmites, which I also need to eradicate.
I see you are in South Central Illinois too. I'm near Olney and the WP is horrible around here. I had it severely in my pond until I had it cleaned out and made larger about 3 years ago. This summer it showed up again. One good thing about it, once it started growing good, my FA stopped growing completely. I think the WP used up the nutrients. I also see a lot of minnows like to hide in the stuff. I prefer it to FA and am just going to spot treat the WP around about 2/3 of the pond and let the rest go. I fought it for years in my pond and had no luck eradicating it.
