Slow-Release Calcium Sulphate for Soil Remineralisation and Rejuvenation
Granular Gypsum is a natural, slow-release source of calcium sulphate designed to rebuild tired, compacted, or worn soils by restoring essential calcium levels. Its mini prill granules (1-2mm) make it ideal for even application with minimal dust, perfect for home gardens, landscaping projects, parks, school ovals, and commercial or industrial use. By improving soil structure and nutrient balance, this clay buster helps promote healthier, more productive soils. It helps correct soil calcium levels and rebuilds tired and worn soils through remineralisation.
You should use Granular Gypsum when soil is compacted, sodic, or has poor structure, or when calcium and sulphur levels need improving without changing soil pH. It is ideal before planting, during soil preparation, or as part of ongoing soil improvement programs for lawns, gardens, orchards, and broadacre farming. Granular Gypsum also helps improve water infiltration and drainage, supports stronger root development, reduces surface crusting, and enhances overall soil health and fertiliser performance over time.
Nutrient Profile:
Why choose Granular Gypsum:
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Gypsum has the following benefits:
Granular Gypsum supplies calcium and sulfur—two essential nutrients that play a critical role in soil health and plant growth. Calcium is a key structural element that helps improve soil aggregation, breaking up heavy clay particles and reducing compaction. This creates better soil porosity, enhancing air circulation and water infiltration, which are vital for healthy root development. Sulfur, supplied slowly through gypsum, is crucial for synthesising proteins and enzymes in plants, supporting overall growth and crop quality. It also plays a role in chlorophyll formation and improves nitrogen use efficiency.
Beyond nutrient supply, gypsum acts as a natural soil conditioner by displacing harmful sodium and magnesium ions from the root zone, especially in sodic or saline soils. This ion exchange reduces soil toxicity and restores a balanced soil chemistry, which encourages beneficial microbial activity essential for nutrient cycling and organic matter breakdown. The slow-release nature of granular gypsum ensures a steady supply of calcium and sulfur over time, reducing nutrient leaching and providing long-lasting soil improvement. This gradual nutrient availability supports sustained plant growth and resilience, particularly in soils prone to nutrient depletion or compaction.
By improving soil structure, moisture retention, and nutrient availability, granular gypsum creates an optimal environment for roots to expand, enhancing the uptake of water and essential minerals. This results in healthier plants, increased yield potential, and better tolerance to environmental stresses like drought or heavy rainfall.
Application Rates should be determined by soil analysis and applied in conjunction with a balanced nutrition program. The following rates are generalised for irrigated and dry land cropping, for intense horticulture these rates can be increased.
| Recommended Application Rate | Amount |
|---|---|
| Per square metre (sqm) | 100g |
| Per 100 square metres (100 sqm) | 10kg |
| Per hectare (Ha) | 1000kg |
Keep out of reach of children. May be harmful if swallowed. If eaten seek medical help. ALWAYS TRIAL BEFORE CHANGE. Before a new rate, product or application method is used, a small trial is recommended. Warranty of this material, either expressed or implied, is limited to a guarantee of the composition as shown on this label in as much as uses are beyond the seller’s control. For the same reason, the seller is not liable for any injury to any living thing, crops, soils, or materials which may result from the use or storage of this material. As this is largely a mineral-based fertiliser made from natural resources, the analysis may change slightly.
NOTE: not compatible with iron-based products
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Granular gypsum is a slow-release calcium sulphate product that helps correct soil calcium deficiencies, rebuild tired soils, and improve soil structure through remineralisation.
It replenishes calcium and sulfur, which enhances soil structure, reduces compaction, and improves water infiltration and nutrient uptake.
It’s ideal for home gardens, landscaping, parks, school ovals, and commercial or industrial applications such as roadworks.
Granular gypsum releases nutrients slowly over time, making it suitable for longer-term soil conditioning, while liquid gypsum provides faster nutrient availability and easier application.
Yes, it’s excellent for lawns, gardens, and flower beds, especially where dust minimisation is important due to its small granule size.
Yes, soil testing is recommended to determine calcium and sulfur levels and tailor gypsum application for best results.
Yes, it works best as part of a balanced soil nutrition program and can be combined with other fertilisers as advised by soil test results.
Yes, it is safe for use around plants, lawns, and pets when applied as directed.
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