Tree Lichens and Copper Sulfate

Ejeismann added on April 10, 2017 | Answered

If I want to use copper sulfate to minimize or treat tree lichens is the copper sulfate harmful to animals, especially pets such as cats and dogs?

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Certified GKH Gardening Expert
Answered on April 11, 2017

Yes, Copper Sulfate is a poison to humans and pets.
This link will help you.

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