Pond Boss Forums AQUATIC VEGETATION Controlling unwanted plants Spot spraying rush weed.

Are you talking about Juncus effuses?

There would be 3 things that I would try, and I will list them in the order that I would try them. All would have to be approved for pond use.

I would also add 1 to 2 fl. oz. of an aquatic surfactant such as Cide-Kick to each gallon of tank mix you make.

1) A liquid glyphosate product, such as Shore-Klear.
2) A liquid 2,4-d product, such as Weedestroy AM-40.
3) A liquid Diquat product, such as Reward.

Cover as much of the plants above the water surface as possible, just to the point of herbicide run-off into the water. I would be careful with the overspray, because other non-target plants could be affected. Mix some pond dye into the spray mixture to make observing coverage easier.