The Q&A Archives: Coffee grounds as fertilizers

Question: Hello,
I am in charge of our six 20' x 6' established planter gardens. I took this over at our shcool site when our arts and hobbies teacher retired. I would like to know if it is really true that coffee grounds can be added to soil/fertilizer to help. We, as a California school, have very limited funds and I thought this would be a good idea to pull kids/parents together.
Mrs. Caccamo

Answer: Coffee grounds are a good organic source of nitrogen. Yes, they can be spread around all plants. They decompose slowly, adding a steady supply of nitrogen and are unlikely to burn plant roots. It's also a good way to reduce the amount of waste sent to the landfills. You can also put them in a compost pile. Engaging the students and their parents is a great idea! You can simply spread a half inch of coffee grounds over your garden beds and dig them in, then spread an additional half inch over the top of the soil after planting. Best wishes with your gardens!

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