Hi, I think I found my answer! I dug up the plant and found it was root bound. It had nowhere to g

Asked July 22, 2019, 12:26 PM EDT

I have submitted questuon, previously, about my plant issue. I did some research of my own and I think I know what is happening. I planted my hydrangea in this very large copper pot. I drilled some water holes in the bottom and then sunk the pot Into a hole about 1-2 feet deep. I think my plant is now copper poisoned from the copper i leaching into the soil. So now what? I think I’m going to have to dig this pot out, maybe lose my plant entirely. If the copper pot is the culprit, how do I neutralize the copper in my soil so I can feel safe planting a new hydrangea? Thanks for your help, Suzanne Cannon

Clatsop County Oregon hydrangeas

1 Response

Thank you for the update, Suzanne. I was watching the prior question, which was assigned to Linda, and found a 1976 article on copper toxicity, although through applied chemicals, not the container: http://citeseerx.ist.psu.edu/viewdoc/download?doi= It indicated that the copper was difficult to measure in the soil. So, I would agree that the pot is a very possible source, and that the plant should be removed and planted in the soil elsewhere. It may be able to revive over time, but appears to have severe chlorosis. Most of the copper research has been done in the EPA environment, but some research is available on agricultural remediation, as well: https://catalog.extension.oregonstate.edu/sites/catalog/files/project/pdf/pnw599.pdf I will get back to you later today with a synthesis on helping the soil, with an idea about how long it will be before the soil is ‘safe.’