The Q&A Archives: Ground Limestone & Peat Moss

Question: I read that if you add peat moss to the soil you should add some ground limestone. What is the purpose of adding limestone?

Answer: The reasoning is that the limestone would counteract any acidity in the peatmoss, and this is of course assuming you have added a rather large quantity -- enough to substantially affect the pH. However, it is really better to run some basic soil tests than to guess with pH because there is just no way to tell by just "looking"! Your County Extension (497-1611) should be able to help you with the tests and interpreting the results.

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