Coastal Oyster Shell Flour – High-Calcium Natural Soil Amendment Size:50 lbs. Bag 000 square feet

000 square feet

bags are available on our single-bag listing

home growers

and regenerative agriculture practices

Coastal Oyster Shell Flour – High-Calcium Natural Soil Amendment Size:50 lbs. Bag 000 square feetCoastal Oyster Shell Flour is an all natural, micronized source of coarse to fine calcium carbonate (CaCO) specifically processed for living soil, commercial crop production, and organic farm management. Sourced from high purity, ocean derived oyster shells, this premium soil builder delivers a sustained, multi season release of plant available calcium while gently raising and buffering soil pH over time. Unlike standard agricultural lime, Oyster