Gypsum (Calcium Sulfate)
Type: Mineral Release: Moderate NPK: 0-0-0 (Ca & S)

Supplies calcium and sulfur and improves structure in sodic soils without changing pH.
๐ฏ What It's Best For
- compacted or sodic soils
- clay improvement over time
๐ซ Not Ideal For
- as a pH amendment
๐งช Application & Dosage
Method: Broadcast and water in.
Rate: 100โ200 g per mยฒ
Timing: Pre-plant or seasonal
Frequency: Every 6โ12 months if needed
โ๏ธ Soil & pH
Soil pH Preference: broad
โ ๏ธ Cautions
Effects are gradual; combine with organic matter.
๐ Where to Buy
- plant nurseries
- garden centers
๐ท๏ธ Tags
calciumstructure
Note
Values are typical approximations. Always follow your specific product label and adjust for pot size, plant type, and local weather. In containers, flush with plain water occasionally to prevent salt buildup.