Improves clay soil structure, adds calcium, leaches sodium without changing pH much.

Typically 40-100 lbs per 1000 sq ft for lawns/gardens. Test soil for best results.

Gypsum Application Calculator

Calculate the amount of gypsum needed to improve soil structure and drainage in your garden.

Calculate the amount of gypsum needed to improve your soil.

Garden Area (sq ft)

Desired Application Rate (lbs / 1000 sq ft)

The full supporting guide for this calculator is still being expanded. The tool remains accessible while we improve the educational content.

Continue with calculators that answer nearby questions and help compare the next step.

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