Tuesday, October 28, 2014

Can I compost egg shells?

Compost Still-Life with Egg Shells

Can I compost egg shells? I'm including a picture.

Yes, you can compost egg shells, but you should be breaking them up first. Egg shells are mostly calcium carbonate, like the powdered lime you buy at your local garden center for adding to your garden soil. Since calcium carbonate is a mineral, it doesn't decompose like vegetable matter. Egg shells need to be broken down into itty-bitty pieces for full incorporation into your compost. From here on out, let the shells dry after you've cracked the eggs, then pulverize them before dumping into the compost bin.

Don't worry that the shells already in the compost bin haven't been pulverized. They'll be broken down eventually as you turn your compost pile or begin working the finished compost into your soil.


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