Q & A

Welcome to the Planet Natural Garden Forum! Whether you’re new to gardening or have been at it for some time, here you can search existing messages for answers to your questions or post a new message for others to reply to. If this is your first visit, please read over our forum instructions carefully before posting. Enjoy!

This topic contains 1 reply, has 2 voices, and was last updated by  E. Vinje 3 weeks, 3 days ago.

  • How much Sulfur to Lower Soil pH?

    Created by Garry on

    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

  • Author
    Posts
  • #291097 Reply

    E. 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!

You must be logged in to reply to this topic.