Crab/Lobster Shell Chunks are an organic crab shell soil amendment (5-3-0) that feeds plants while improving soil structure. Derived from natural crab shells, this dry, chitin-rich amendment supplies calcium and magnesium, builds organic matter, and supports a more resilient growing environment. At a glance Type: Organic crab/lobster shell soil amendment Analysis: N-P-K 5-3-0 Calcium and magnesium: Calcium 17%, Magnesium 1% Chitin-rich: Promotes chitin-eating bacteria and microbial activity Pest support: Helps deter ants, grubs, fungus, and root nematodes Certification: Organic Best for Vegetable and flower beds and perennials Lawns applied with a broadcast spreader Containers and raised beds Building deeper root systems and soil structure Natural pest and weed suppression How to use Work the chunks into the soil prior to planting to improve root anchorage and nutrient access, or top-dress beds and lawns to gradually enrich the soil over time. For lawns, apply with a broadcast spreader and water in to help incorporation. Regular seasonal applications support long-term soil health and plant vigor. About The Soil Makers The Soil Makers take a science-forward, soil-first approach to amendments designed to support robust plant growth and sustainable soil health without synthetic inputs.
