How to use Gypsum to Improve Clay Soil in Australia
Spread 1 to 2 kg of gypsum for every square metre of lawn area. Rake in the gypsum as best as you can and water well. The best time to do this is in autumn or winter as it will give the gypsum enough time to work on the structure of the soil before the grass springs back into strong growth again. How long does gypsum take to work?
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