Originally Posted By: Quarter Acre
I believe copper is the active ingredient in cutrine. If it drops out...what'soing to kill the weeds?

Cutrine Plus pamphlet quotes...

"ACTIVE INGREDIENTS:
Copper Ethanolamine Complex, Mixed (Mono CAS#
14215-52-2 and Tri CAS# 82027-59-6)*..........27.9%"

"This product is a liquid copper-based formulation containing ethanolamine chelating agents to prevent the precipitation
of copper with carbonates and bicarbonates in the water."

From...

http://www.lakeandpondsolutions.com/media/34102/cutrine%20plus%20label%202012.pdf

Even though the "ethanolamine chelating agents" are supposed to keep the copper from falling out, something has solidified and I'd bet that those ingredients are important to the nature of the herbicide.

Disclaimer - I'm no herbicide expert or cutrine user for that matter. Just my opinion...I would dispose of it or use it with little hopes of any killing effect.


Yeah, seems like the best/smartest route to go. The FA and duckweed have been killing me this year. I was pushing myself around the pond in the canoe (which slips over the FA mats best) spraying, and a field mouse suddenly appeared (from the float compartment in the bow or stern I'm guessing). He was pretty tame, so I just picked him up by the tail and flipped him out into the pond. The FA mats are so dense, he was able to (mostly) walk back to shore! He even stopped for a rest and a drink. Sad stuff. I'll keep after it.
Thanks for the input Quarter!


Better to shun the bait than struggle in the snare.
- William Blake