Gypsum is a naturally occuring mineral, derived from ancient sea deposits which can act as a "clean green" soil conditioner and fertiliser with many benefits.

Application Guidelines

Gypsum is available in two grades, screened gypsum (Natural Gypsum) and finely ground gypsum (Soil Life®, Claybreaker™).
Bag size options for Natural Gypsum and Soil Life® include 25Kg bags and 1000Kg slingbags.
Claybreaker™ bag size options include 8Kg and 25Kg options.
Natural Gypsum is also available in bulk truck and trailer deliveries.

Application Guidance by Calendar Month and Crop

Calendar Month Horticultural and Agricultural Activity Activity Gypsum Use Notes
February Vegetable field crops Autumn ground preparation Soil conditioner to improve clay soils and water infiltration at cultivation  
March Vegetable field crops Autumn ground preparation Soil conditioner to improve clay soils and water infiltration  
  Vineyard and orchard developments Autumn ground preparation Soil conditioner to improve clay soils and water infiltration and assist to remediate contoured land  
  Dairy herds Autumn calving Gypsum can be part of a nutritional fertiliser blend* *Secure advice from your vet before using Gypsum
April Avocados Autumn fertiliser application Supplementary source of calcium, sulphate fertiliser  
  Vineyard and orchard developments   Soil conditioner to improve clay soils and water infiltration and assist to remediate contoured land  
 

Amenity turf and pasture situations

 Autumn turf maintenance Soil conditioner, supplementary sulphur fertiliser, amend acidic subsoil  
  Dairy herds Autumn calving Gypsum can be part of a nutritional fertiliser blend*  *Secure advice from your vet before using Gypsum
May Orchard and vineyard developments Autumn ground preparation Soil conditioner to improve clay soils and water infiltration and assist to remediate contoured land  
  Amenity turf Autumn turf maintenance Soil conditioner, supplementary sulphur fertiliser, amend acidic subsoil  
  Pasture situation Autumn turf maintenance Soil conditioner, supplementary sulphur fertiliser, amend acidic subsoil  
  Arable cereal crops Autumn ground preparation Amend acidic subsoil, remove aluminium build up in subsoil  
  Dairy herds Autumn calving Gypsum can be part of a nutritional fertiliser blend*  *Secure advice from your vet before using Gypsum
June Amenity turf   Improve clay soils and water infiltration  
  Dairy herds Winter calving Gypsum can be part of a nutritional fertiliser blend*  *Secure advice from your vet before using Gypsum
July Onions Applied to seed bed after sowing Prevents soil capping / crusting and allows seedlings to grow unhindered through top soil  
  Dairy herds Winter calving Gypsum can be part of a nutritional fertiliser blend*  *Secure advice from your vet before using Gypsum
August Potatoes Applied to seed beds at planting Supplementary calcium and sulphate sulphur source for early demand in plant establishment phase  
  Maize Ground preparation Supplementary calcium and sulphate sulphur source for early crop establishment  
  Arable cereal crops Ground preparation Amend acidic subsoil, remove aluminium build up in subsoil  
  Kiwifruit orchards Base fertiliser applications Supplementary source of calcium, sulphate fertiliser for flowering and fruitset  
  Stonefruit and pipfruit orchards Base fertiliser applications Supplementary source of calcium, sulphate fertiliser for flowering and fruitset  
  Dairy herds Winter/spring calving Gypsum can be part of a nutritional fertiliser blend*  *Secure advice from your vet before using Gypsum
September Kiwifruit orchards Base fertiliser applications Supplementary source of calcium, sulphate fertiliser for flowering and fruitset  
  Stonefruit and pipfruit orchards Base fertiliser applications Supplementary source of calcium, sulphate fertiliser for flowering and fruitset  
  Avocados Base fertiliser applications Supplementary source of calcium, sulphate fertiliser around flowering and fruitset  
  Arable cereal crops Ground preparation Amend acidic subsoil, remove aluminium build up in subsoil  
  Vineyards Broadcast application Address salinity build up in sub soil  
October Avocados Base fertiliser applications Supplementary source of calcium, sulphate fertiliser for flowering and fruitset  
  Vineyards Broadcast application Address salinity build up in sub soil  

 

Rate of Application Guidelines

For rates of application for natural gypsum, click here.

For rates of application for Soil Life® gypsum, click here.

For home garden use (Claybreaker™), click here.

For animal health around calving, please talk to your vet for guidelines on using gypsum in a blended nutritional mix.

Where to Buy Gypsum

View distributors here.