Elixir Gardens Gypsum Calcium Sulphate Clay Breaker 15kg Bag

Elixir Gardens Gypsum (Calcium Sulphate) is a highly effective, natural solution for transforming heavy, waterlogged clay into beautifully workable, crumbly soil. Rather than simply acting as a masking agent, this agricultural-grade conditioner works at a chemical level, binding fine clay particles together into larger aggregates to dramatically improve drainage and root aeration. Best of all, it achieves these structural improvements completely naturally and without altering the crucial pH balance of your beds, borders, or lawns. The granular composition is exceptionally clean and straightforward to apply, resisting wind drift to ensure the product goes exactly where it is needed. Applied at the recommended rate of 200g per square metre—particularly in autumn to let the winter frost assist the breakdown—it yields fantastic, lasting results for spring planting. Beyond loosening the ground, the slow-release boost of elemental calcium and sulphur reinforces plant cell walls and stimulates vigorous root development, making it an invaluable investment for overall garden health.

I bought this, as I have a really heavy clay soil. The main thing I was hoping to do was improve the drainage under my lawn by braking up the clay. This product comes with straightforward instructions and doesn’t take long to apply. I used this over a month ago and so feel I can now review the results. This has made a slight difference to my lawn, although not the level of impact I had hoped. I applied it after removing plugs from the lawn to try and get the product deeper into the lawn. You may then wonder why the 4 stars.... I also used this on some of my planters, which have a base of clay soil, but I top up with compost. I applied this product and then worked the soils with a shovel and fork, turning it over and the results have been amazing. The soil has changed from a compacted clay to a crumbly workable soil in a matter of a could of weeks. Clearly this product does work, I’m just not convinced it will sort out a lawn in one treatment, but if you have an opportunity to work the soil after application it can have great results as I’ve seen. I’ll be applying this to my borders and planters again next year and will give the lawns a go again too.

Great item slowly but surely eats away the clumpy clay under my lawn, it's drained loads better. I drilled holes 2 foot deep put a 1kg in each hole. Mostly filled the hole with water and left it to drain for a few days. I then packed it with compost as that burns at clay too. Topped the compost up a few times until it was firm. Last few inches I put topsoil in. Worked great after a few month. It takes time. I will do 6 monthly sprinkling sparingly to keep at that clay. It did great at the bottom of planters but just a tiny bit. Just don't use on acidic soil loving plants, check guidelines on plants

This helped break up the stubborn clay in my garden that could’ve doubled as pottery clay. After a few weeks of use, the soil started behaving like soil again – crumbly, airy, and actually drainable. Easy to apply and wind-resistant granules mean less wastage. If this helped improve your soil and your mood, go ahead and hit “Helpful”.

I held off for about 6 months after I used this to give a review. I use the whole bag on about a 40 square meter yard. Honestly, it doesn't seem to have had much effect. I followed the instructions religiously and aerated the lawn and all the things. The water the grass regularly but there's been very little texture change in the soil. Still just claggy, clay, no better drainage etc. even now 6 months after I applied it, I can still see some white spots where it hasn't really mixed with the clay. I'm not sure I'd try it again.

Very fast service, Great Valley for

High quality and easy to spread. Used on lawn as we have so much clay. Hoping it will make a difference. May have to use a few more times to appreciate its full effect. Laid under compost with seeds to cover patches in grass.

Arrived very quickly, had been recommended to buy this product to use on very heavy soil. Absolutely great results.