Copper compound

Question

Does copper compound come in liquid form or in granules? I have a problem with my rhubarb and that’s what they need.

Answer 1

You should be able to find both liquid and or granular forms of copper compounds.
Your local garden centers or garden sections of a home improvement center will carry these products.

https://www.gardeningknowhow.com/edible/vegetables/rhubarb/brown-splotches-on-rhubarb.htm
http://dnr.wi.gov/lakes/plants/factsheets/CopperFactsheet.pdf