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.
Home Gardens & Lawns
Apply evenly to garden beds, flower beds, and turf areas to improve soil health and nutrient availability.
Landscaping & Parks
Ideal for large-scale landscaping, school ovals, and community green spaces needing soil remediation.
Commercial & Industrial
Suitable for road works, industrial sites, and commercial projects requiring soil rebuilding and calcium supplementation.
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.
| Attribute | Details |
|---|---|
| Form | Granular (Mini prill 1-2mm) |
| Use Cases | Home gardens, landscaping, parks, commercial & industrial sites |
| Application | Broadcast spreading, soil incorporation |
| Compatibility | Safe for most soils and plants |
| Origin | Made in Australia |
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
(1075)
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 |
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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First time owning lawn. Gave the team at plant doctor a ring and they supplied me with a wealth of information. Products turned up quickly.
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Only have great things to say about Plant Doctor. Organic products and a competitive price, fast shipping and easy to contact with questions. Have had great results with the special mix for lawns, and my plants (indoor and outdoor) love the seaweed secrets. I am excited to test out some of the animal products soon!
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