The Q&A Archives: Acidic Mushroom Compost

Question: How can I get mushroom compost slightly acidic for planting Dicentra species? If it requires peat moss, how much should I add to the mushroom compost? Any advice would really help.

Answer: The standard recommendation is 3-4" of peat spread on top of the planting bed and worked into the soil 6-8". Alternatively, you could add cottonseed meal at the same rate to help acidify the soil.

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