Break up clay soils. Improve structure. Boost calcium and sulphur – all with an easy-to-use liquid.
Micronised Gypsum is a liquid soil conditioner designed to do what traditional gypsum does—only faster and more effectively. Its ultra-fine particles are suspended in a thick, free-flowing liquid, making it easier to apply and faster acting than powdered gypsum. Whether you’re tackling heavy clay, correcting nutrient deficiencies, or improving soil structure, this “clay buster” gets the job done.
Lawns (Buffalo, Couch, Kikuyu & More)
Green-up your lawn while fixing soil from below. Turf often suffers in heavy clay or sandy soils. This product works both ways:
Tip: Great for turf managers or homeowners chasing long-term soil improvement, not just a quick fix.
Gardens (Veggies, Flowers, Trees, Pots)
Easy to use. Powerful results. If your lawn or veggie patch suffers from poor drainage, crusting, or compaction, this liquid gypsum is your shortcut to better soil. It can be watered in, sprayed, or applied through drip irrigation—whatever suits your routine.
Suitable for:
Bonus: The mix can be sprayed over foliage too, giving a minor foliar boost.
Farms & Larger Properties
A smart tool for modern soil management. Farmers know the value of calcium and sulphur, but traditional gypsum is slow and bulky. Liquid Micronised Gypsum offers:
Common Uses:
This isn’t just gypsum in water—it’s a finely micronised suspension that exploits particle size physics. Micronisation means:
Each droplet carries a dense load of calcium and sulphur, ideal for quick plant uptake and ongoing soil improvement. It also plays a key role in protein synthesis, root resilience, and improving fertiliser efficiency.
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| Compatibility | Avoid mixing with iron-based or phosphate products; jar test recommended |
| Origin | Made in Australia |
Store in a cool dry area out of direct sunlight. This product has been tested to store safely down to 5ºC. Sedimentation may occur below 5ºC. Do not pre-mix or store in diluted form. MMS products are very heavy and every care should be taken when handling these materials to avoid back injury. We have found this gypsum has the potential to attract anaerobic microbes which may make the liquid smelly and turn black if not kept air-tight (sealed) immediately after use and stored in a cool location. It is still safe to use after this, however may not be at its best.
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| Use Area | Rate | Notes |
|---|---|---|
| Soil Ameliorant or Fertigation | 10–50L/ha | Use higher rates for heavy clay (soil amelioration) |
| Home Garden | 45mL in 9L water | Apply 1L/m² every 2–4 weeks |
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Foliar (Veg/Orchards/Turf) |
1L per 100L. Up to 7L/ha depending on crop. | *NOTE: whilst this is a micronised product, we recommend drenching with a watering can or putting it through systems that can take larger particle sizes. |
| Foliar Vegetables | 1L per 100L. Up to 5 L/ha equivalent. | Apply weekly or as required. |
| Foliar Orchards & Vinyards | 1 L per 100 L water up to 7 L/ha equivalent. | Apply every 2 – 4 weeks or as required |
| Foliar Ornamentals & Turf | 1 L per 100 L water up to 5 L/ha equivalent. | Apply every 2 – 4 weeks or as required. |
| Broadacre Crops & Pasture | 1–3L/ha in 60–100L water *depending on canopy closure. | Apply as needed |
| Spot-Spraying | 50 mL per 10 L water. | Apply as required |
| Liquid Inject | 2–5L/ha |
Dilute 1:3 minimum. *Use a minimum dilution rate of 1-part product to 3-parts water. Rate will depend on crop, row spacing & soil type. Always consider N & P crop requirements for starters based on reliable soil test data. |
Always shake well before use. Maintain constant agitation in tank. Store in a cool place. May become smelly if not sealed.
INSTRUCTIONS:
Shake or stir well before use & maintain constant agitation. It is advisable to pre-mix, adding this product slowly while maintaining agitation in spray tank to prevent settling of solids. Will pass through 200-micron filter under ideal conditions, however, a coarse inline filter (500 microns/35 mesh) is recommended to ensure the delivery lines are free from particle contaminants from other sources. Where higher water rates are required for good foliar coverage, do not exceed maximum product rate per hectare. MMS products will leave a visible residue on leaves and fruit when used as a foliar. Avoid spraying close to harvest if produce is susceptible to staining. Sensitive foliage or plants should be test sprayed prior to full scale application. Frequencies are a guideline only and can be adjusted according to farm practices and/or in conjunction with crop monitoring. Ensure suitable spray conditions (e.g. temperature, humidity, wind-speed), prior to foliar application. Compatibility and/or performance cannot be guaranteed when combined with other products. Jar test for compatibility and spray test on small area before wide-spread use.
Liquid Micronised Gypsum is used to break up clay soils, improve calcium and sulphur availability, and aid in soil conditioning. It’s ideal for home gardens, broadacre crops, and pastures.
Unlike traditional granular gypsum, this micronised liquid version has a much finer particle size, which enhances its effectiveness and allows for easier, faster application via watering cans or spray equipment.
Yes, it’s safe and effective for use on lawns, vegetable beds, garden soils, potted plants, and ornamentals. It helps loosen compacted soil and improves nutrient uptake.
Application rates vary by use, but a typical garden use is 45 mL per 9 L watering can, applied at 1 L per m². For large-scale use, rates range from 10–50 L/ha depending on need.
Yes. It can be fertigated or foliar-applied (ideally via coarse nozzles or watering cans). It’s suitable for vegetables, orchards, turf, and broadacre crops. Use proper filtration and agitation.
The product can attract anaerobic microbes if not sealed tightly or stored in cool conditions, which may cause it to darken or smell. It’s still safe to use, but best stored airtight and cool.
Amount of Reviews: 16
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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.
Will definitely be getting more 8 weeks difference been using stimulizer, activ8mate, soil wetter, seaweed secrets and champion fertiliser. Was super fast delivery.
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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