Gypsum for clay soil
Jul 06, 2010· Gypsum is recommended as a soil improver, but appears to be sold in garden centres as a proprietary product costing nearly £5 for kg. Hmm. I know it is, but I am scptical. Our clay overlies enough chalk, and though it helps, it does make the soil excessively alkaline. We have found copius additions of orgamic material peats, topsoils and