The Q&A Archives: Amending Soil With Coffee Grounds

Question: Do coffee grounds increase the acidity of soil? How effective is this, and should I just till the grounds into my garden, or should I throw them in my compost pile?

Answer: Coffee grounds are an excellent source of nitrogen, and will acidify soil to a small degree. You can compost them or you can just broadcast them onto the soil. Either way, they're beneficial to garden soil, and will attract red worms, which will helpbreak down organic matter.

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