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I'm thinking of sprinkling my used coffee grounds around my perennials, annuals, and wildflowers. What are the benefits to doing this, and is there any harm in using them?
Last Updated: December 17, 2007
Starbucks coffee has publicized the use of coffee grounds in the garden. Sprinkling grounds over the soil is fine. No one has come up with research stating exactly how much to use.
According to the University of Illinois:
"Coffee grounds are considered organic matter and can be used as a soil additive if rinsed thoroughly. Avoid using fresh grounds or grounds with coffee flavor and color still present."
The best way to use the coffee grounds would be to compost them with other items and use the finished product in the garden.
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