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Gypsum Natural is a horticultural calcium and sulphur fertiliser used to improve soil structure and water retention of heavy clay soils by loosening the clay, allowing for better drainage. As a fertiliser, gypsum is fast-acting and pH neutral while most other calcium fertilisers either raise or lower soil pH.
Online orders can be delivered straight to your farm, orchard, lifestyle block or residential house across New Zealand. Note that at this stage, we do not offer international deliveries or deliveries to the Chatham Islands, Great Barrier Island, Stewart Island or Waiheke Island.
All orders that can fit into one standard courier parcel that is 25kg or less and 0.125mᶟ.
$9.00
All orders that can fit into two to three standard courier parcels that equal less than 50kg in total.
$15.00
All orders that are 50 to 100kg and cannot fit into less than three standard courier parcels.
$50.00
All orders that are more than 100kg in total and cannot fit into less than three standard courier parcels.
$100.00
Exclusions apply. Read the full delivery policy here.
Easy Returns
Products ordered online can be returned within 30 working days of taking delivery of the products, provided they meet our return conditions. The goods can be either refunded, replaced or exchanged.
There are three effortless ways to process a return:
Processing a return online: Sign into your PGG Wrightson Web Account and look for "Returns" on your left menu and follow the steps.
Returning a product in store: Head into your local PGG Wrightson store with your packaged product and your online order reference (in print or electronic version).
Contacting our customer service team: Ring 0800 10 22 76 and our customer service team will take you through the steps to return the product to us.
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Gypsum is calcium sulphate di-hydrate (CaSO4 2H2O)
The bulk density of this gypsum product is 908 kg per m3 (loose) and 1,172 kg per m3 (compacted)
Gypsum mixes well with other dry fertilisers and can be used to assist in the uniform application of small quantities of zinc, manganese, boron and the other trace elements
Winstone Gypsum produces two gypsum products that are chemically identical: Soil Life®, a fine ground form, and Gypsum Natural, a coarser pulverised form
Gypsum has high purity with 93 to 98% calcium sulphate. Contains other minerals: sulphur 18% and calcium 23.26%
Conveniently, 1 kg of gypsum has a volume of approx 1 L (1 tonne has a volume of 1 m3). Quick inter-conversion between mass and volume simplifies accurate measurement. Gypsum is easy and safe to apply using conventional dry-spreading equipment.
Application rate
Apply approximately 0.5 kg per square metre. Mix into the soil and then water well.
Application timing
Gypsum relies upon rainfall to solubilise it, so the best time to apply is in early spring or after harvest when rainfall occurs. Apply in calm or at the most 'light breeze' (one to two knots) conditions. This avoids large amounts being blown away from the target area.
All prices are stated in New Zealand Dollars and all credit card payments through store.pggwrightson.co.nz will be processed in New Zealand Dollars. Product images are for illustrative purposes only. The information is not designed as a substitute for specific advice. If professional advice or other expert assistance is required, you should retain the services of a competent and independent professional adviser. Always use professional advice for critical work or procedures or where you are unsure of any stated figures or information. Safety Data Sheet and Haznote provided may not be the most up-to-date version, please ask your local PGG Wrightson store when you collect the product. No part of this information may be reproduced, stored, or transmitted without our prior written permission. PGW's terms of trade apply to any services and products that we supply you.
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