We'd like to take a moment to remind you that you can add shells from your everyday cooking to your compost! Seafood shells, egg shells, and nut shells.. Seafood Shells: Oysters, clams and mussels… ... Yes, all of these guys can be composted in your garden.

Is mussel shell good for soil?

The shells also contain calcium carbonate, the key ingredient in garden lime. Calcium is another essential element for plant health, and it raises the pH of the soil in areas that are too acidic. The shells of mollusks such as oysters, mussels and clams are also rich in calcium.

Are crushed mussel shells good for the garden?

Yes, mussel shells can be composted and used in the garden. ... The shells are also a valuable source of calcium carbonate, the key ingredient in garden lime. The shells of mussels, clams and oysters are rich in calcium, another essential element for plant health, that raises the pH of soils in areas that are too acidic.