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  • How much Sulfur to Lower Soil pH?

    Created by Garry on September 23, 2018 at 5:07 pm

    If I was to use elemental sulfur in a heavy clay soil that started at 7.0 ph average. How much will the PH drop per Tablespoon over an 18″ x 18″ area? Everything I find is rated for pound per acre, not table or teaspoon per square foot or yard, which would be more useful to a home gardener. Thanks

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  • September 24, 2018 at 1:51 pm #291097

    Eric Vinje
    Keymaster

    Hi Garry –

    Apply 12 lbs. Elemental Sulfur per 100 square feet for each one point reduction in soil pH desired. For heavy clay soils increase rate to 15 lbs. Gradual reduction in soil pH is preferred as dramatic reduction can result in stress. If growing in containers, add one Tbsp for each 4-inch of pot diameter.

    Hope it helps!

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