Garden Soil pH - Knowledgebase Question

Hanover Park, IL
Avatar for madrocklew
Question by madrocklew
February 20, 1998
The pH of my garden soil is 7.5. How do I lower it to between 6.5 and 7.0?

Answer from NGA
February 20, 1998
If the area is a small one, you can add peat moss to make the soil more acid. Peat is expensive, though, so you wouldn't want to do a huge area. If the garden is large, apply sulfur to correct the pH. There are no hard and fast rules about how much to apply - it depends upon the area you're treating. You can also apply an acid mulch material after you've planted your garden and then mix it into the soil at the end of the season. It will take a couple of seasons, but eventually you'll get positive results.

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