A St. Louis homeowner struggles with builder's clay subsoil for 4 years. Plans soil test, tilling with amendments, fall seeding. Asks about a clover cover crop and neighbor contamination.
The expert loves clay: it's packed with nutrients (high Cation Exchange Capacity holds Ca, Mg, K, ammonium). Wrong amendments (sand) create concrete. Recommends 1:1 organic matter (peat, compost, aged manure) to clay. Clover is a nitrogen-fixing gem, not a weed—Scotts labeled it a weed to sell broadleaf herbicides. Cover crops (alfalfa, clover, vetch, fava beans) build organic matter. Till lightly to protect earthworms. Soil test after organic matter improvement.
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