I have a couple of pots on the patio of Egyptian walking onion that are about 7 years old they get watered every day with spent coffee grounds. They are big, healthy plants. I donโ€™t know what that says. But Iโ€™m not worried about coffee in the garden.

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Thank you; good info. To be sure, over my life everyone has always talked about putting tea and coffee grounds in the garden and this is the first Iโ€™ve heard against it. Iโ€™ve got a lot to think about.