(49.3% SiO2, 13.3% Al2O3, 9.2% CaO, 5.7% MgO, plus trace minerals) A paramagnetic stone powder from the Pioneer Valley of Massachusetts for remineralizing and enhancing the general foundational fertility of the soil. Latest magnetic susceptibility reading is 2400 cgs units. Till in 1–10 tons/acre, 5–50#/100 sq ft or broadcast at 1–5 tons/acre, 5–25#/100 sq ft. For compost, add 20–25#/cubic yard of raw material. Use up to 5% by volume in potting mixes.
The 2022 Bulk Order is closed. Ordering will reopen for the 2023 NOFA Tri-State Bulk Order on January 1st, 2023.