Crab/Lobster Shell Flour

Crab/Lobster Shell Flour is a finely ground crustacean meal crafted to nourish soil biology while delivering essential nutrients. Rich in nitrogen, phosphorus, calcium, magnesium, and chitin, this marine-based amendment integrates evenly into soil blends and topdress applications to boost moisture retention and organic matter. Why this matters for your garden - Chitin-rich formula supports beneficial soil bacteria that degrade chitin, helping to suppress soil pests and some root diseases. - Improves soil structure and moisture retention, aiding plant resilience in containers, raised beds, and garden plots. - A versatile soil amendment that complements composts, worm castings, and organic mixes to enhance overall soil health. Use cases and ideal applications

• Compost and organic soil mixes: mix in to accelerate microbial activity and nutrient availability.
• Garden topdressing: apply as a surface layer to gradually boost soil minerals and organic matter.
• Pest and disease management support: the chitin content fosters beneficial bacteria that help suppress ants, grubs, fungi, and some root nematodes.
• Hydroponics or soilless blends: as a nutrient source and soil-building additive when used in conjunction with other amendments.

how to apply

Application rates and methods are designed to be simple and flexible, with options for pre-plant incorporation or surface topdressing.

• : mix into soil before planting or blend into organic soil mixes at 1/4 to 1/2 cup per cubic foot of soil.
• : layer over the soil surface and cover with worm castings or compost to integrate the nutrients gradually.
• : combine with kelp meal to further improve soil structure, water-holding capacity, and microbial diversity.

Chitin spray for fungal and pest issues (preparation and use)

For targeted control of fungal diseases and pests, you can prepare a chitin spray using Crab/Lobster Shell Flour, water, and a small amount of Quantum VSC:

1. Mix 1/4 cup Crab/Lobster Shell Flour with 4 gallons of water and 1 teaspoon Quantum VSC.
2. Let the mixture sit for 1–2 days until the initial odor diminishes, then strain the solids.
3. Dilute the strained liquid with an additional 4 gallons of water.
4. Spray on plants in the early morning or late afternoon to minimize leaf burn from sunlight magnification.
5. Any leftover spray can be applied to soil or compost for added soil health benefits.
6. Use this spray specifically in gardens affected by fungal or pest pressures.

Practical notes

Crab/Lobster Shell Flour is a marine-based, crustacean meal designed to slot into established soil-building routines. It pairs well with other organic amendments and supports long-term soil vitality, especially when integrated into regular topdressing and composting cycles.

Brand and source

The Soil Makers bring decades of experience in sustainable soil amendments. This Crab/Lobster Shell Flour reflects our emphasis on natural minerals, soil biology, and practical, results-driven gardening inputs that help home gardeners, small-scale growers, and hydroponic enthusiasts build living soils.

Meta-friendly identifiers (for catalog and search)

Global description tags: crustacean meal, crab meal, shrimp meal, chitin, living soil, organic gardening, organic fertilizer, organic amendment, marine meal, crab shell flour.

Crab/Lobster Shell Flour is an excellent source of essential nutrients including Nitrogen, Phosphorus, Calcium, Magnesium, and Chitin, finely ground for uniform integration into your soil. Ideal for composting, organic soil mixes, pest sprays, and garden topdressing, it enhances soil moisture retention and boosts organic matter. High chitin content encourages beneficial chitin-degrading bacteria, aiding in the control of ants, grubs, fungi, and root nematodes.

Apply by mixing into soil before planting or top-dress with worm castings or compost at 1/4 to 1/2 cup per cubic foot. Combining with kelp meal further improves soil health. 

For managing fungal diseases and pest infestations, prepare a chitin spray using 1/4 cup of Crab/Lobster Shell Flour, 4 gallons of water, and 1 teaspoon of Quantum VSC. Combine these ingredients and allow the mixture to sit for one to two days until the initial odor diminishes. Once ready, strain the solution and dilute it with an additional 4 gallons of water before spraying on plants. Apply during early morning or late afternoon to avoid leaf burn caused by sunlight magnification. Any leftover solution can be applied to soil or compost. Use this spray exclusively for gardens affected by fungal or pest issues.