Don't throw away your coffee grounds or egg shells, instead as you turn the potting soil in your house plants, add the grounds and shells for healthier house plants. This can also be used in vegetable gardens for larger crop yields.
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Are coffee grounds good for spruce trees and evergreens?
Are coffee grounds good for all plants? I specifically want to know about coffee grounds and mums.
I have several small flower beds around my home. I also use a lot of coffee. Are there any suggestions for using the grounds from coffee to nourish my dirt, other than building a compost pile?