Does using coffee grounds really help roses grow better?
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John H on May 20, 2011Michele, I have heard several people swear by it. Coffee is acidic. Roses flourish in soil with a pH around 6.5. Adding coffee will raise the pH. Soil pH is easy to test. You can buy the strips at most stores. Don't use too much! It could keep them up all night..:)Helpful Reply
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