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Duckweed

Q.duckweed

kkillg added on May 2, 2016 | Answered

Can I use copper sulfate to kill duckweed in pond water that I irrigate the garden with?

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Downtoearthdigs
Answered on May 4, 2016

We do not recommend the use of copper sulfate to kill Duckweed.
Here is an article with more information.

https://www.gardeningknowhow.com/plant-problems/weeds/duckweed-control.htm

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