A composting bin

Can I put crab shells in my compost bin?


You can put crab shells into your composting bin!

Key info
Brown material📂
6 months - 2 years

Get the right balance of brown and green composting materials in your bin with our expert guide.

Crab shells, as well as other shellfish shells, are a great addition to any compost pile.

Comprised mainly of calcium carbonate and the carbohydrate chitin, they produce a nutrient-rich compost.

The extra calcium is a much welcome boost too for some types of plants.

Crush them before adding for faster decompose.

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