Useful Coffee Grounds - Knowledgebase Question

Honesdale, Pe
Question by dalloway1
May 16, 2010
I think I read used coffee grounds are good for certain shrubs such as rhododendrun and azaleas? Is this true?


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Answer from NGA
May 16, 2010

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Coffee grounds make a good mulch because they are an organic material, but the brewing process removes the acidity and they typically test out at about neutral on the pH scale - so don't expect them to help acidify the soil for your azaleas and rhododendrons. Just think of them as an organic mulch material rather than a soil acidifier.

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