Estimate elemental sulfur to lower garden soil pH.
Lowering pH requires elemental sulfur in an amount that depends on both the pH drop and the soil's buffering, which is greatest in clay. Most vegetables prefer mildly acidic soil, and adjusting pH unlocks nutrients that are locked up in alkaline soil.
Soil pH Adjustment
Sulfur = pH drop x soil-type rate, per 1000 sq ft
Sulfur = pH drop x soil-type rate, per 1000 sq ft Lowering pH requires elemental sulfur in an amount that depends on both the pH drop and the soil's buffering, which is greatest in clay.
Most vegetables prefer mildly acidic soil, and adjusting pH unlocks nutrients that are locked up in alkaline soil.
This calculator takes 4 inputs: Garden area, Current soil pH, Target soil pH, Soil texture. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.