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Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate.
It is mined around the globe, with many uses including as a fertilizer, construction material, in architectural and sculpture applications as well as pharmaceutical and food additive uses.
Great for acid loving plants (like rhododendrons) as it adds calcium to ground without altering soil pH.
Also good at breaking up clay, especially reactive clays and can improve the structure of most soils.
Simply use a spreader to distribute it over the surface of your lawn or garden.
For garden application, also mix in compost or organic matter. Water immediately after application.
