Application: 5 lb. covers 300-600 sq. ft. A high quality soil conditioner which consists calcium and many micronutrients, Oyster Shell provides a
long-lasting, steady release of nutrients to help regulate pH levels, improve
fertilizer uptake, promote healthy cellular structure and enhance soil tilth.
Oyster Shell is also helpful in creating more active habitats for soil microbes
in compost piles and worm bins. Oyster shell promotes healthy root growth, and improves soil
compaction. Natural, organic source of calcium and is used to correct Ca
deficiencies and raise pH in acidic soils. ·Contains calcium plus a natural balance of 10 other nutrients and micronutrients. ·Variable particle size
provides both immediate and long-term fertilization. This product is not what it would appear from the name, i.e. it's not a product made from crushed oyster shells but rather it's a particular oyster shell mined from the San Francisco Bay from ancient sea deposits made up of very tiny and fragile oyster shells.