Oyster shells can be reused in an ecological and beneficial way. Crushed, they serve as a calcium-rich amendment for compost, improving future plants’ health. Placed at the bottom of flower pots, they act as a drainage system, retaining water at the roots.
Shells can also provide a valuable mineral supplement for hens or birds.
Finally, placed around plants, they form a natural barrier against snails and slugs, protecting the garden without pesticides.