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Backyard Bazaars

Backyard Snail Shell Calcium Powder Maker

Crush clean empty land snail shells into fine calcium powder to sell as a natural soil amendment for tomato growers.

Startup Cost: £20 Location: Remote/Home Difficulty: Easy Useful side income A few hours a week

Earning and time figures are our broad estimates, not guarantees — actual results depend on your area, your effort and demand.

Why it's left-field

Allotment gardeners buy crushed snail shell dust prepared in your garden shed to prevent blossom end rot in tomatoes.

How it works

  1. 1Collect empty dry snail shells from garden beds and sanitise in boiling water.
  2. 2Bake dry shells and grind into fine calcium powder using a mortar or mill.
  3. 3Package calcium powder into moisture-proof pouches and sell on plant forums.

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