The best thing to add to clay soil is organic matter such as compost, added yearly; gypsum only helps sodic clay, and fine sand makes clay worse. Expect the top layer to improve in one season and real structure in two to three years.
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Dahlias: When to Plant Tubers and How to Store Them Over Winter
Plant dahlia tubers after soil warms to 60F and frost risk passes; dig, cure and store them cool and dry over winter…
Nov 2, 2026
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