Eggshells in the Garden

What do you do with your eggshells at the end of a carton?

If you’re like us, you just throw them out, or maybe compost them (more recently).

But if you own a garden, you’re trashing a valuable resource! Eggshells provide a great source of calcium for your plants, and also a safe, natural method of pest control. Sharp, ground-up shells can deter beetles, slugs, and snails from your precious greens, very similar to the way diatomaceous earth works. (Read more about pest control)

We did this last week with our garden. We finished our monthly dozen and a half eggs, put our leftover eggshells in the blender, and pulsed it several times. We recommend doing this with fewer at a time, as we had to keep jabbing a spoon down in there to force the bigger shells down to the blades.

After several rounds of pulsing, jabbing, jabbing, and pulsing, the shells were crushed up finely at the bottom of the blender.

Some people recommend using a coffee grinder, as it will grind the shells down to the consistency of sand. We country bumpkins don’t own no high falutin’ coffee grinder, so a blender worked just fine for us.

We took the grounds out to the garden, and simply sprinkled them around the plants. This is the second time we’ve brought eggshells into the garden, and you can see that our leaves are still intact and safe from pesky bugs.

This was a great natural way to protect our plants, feed my soil, and reduce/reuse/recycle.

What are some other natural ways you keep your plants happy?



One thought on “Eggshells in the Garden

  1. I have chickens so we get a lot of eggs. 6 months of the year the shells go into the compost for future years, then the other 6 months they go into a cardboard box marked “EGG SHELLS ONLY” in the kitchen. There, they dry out, glue together, and the membranes dry up. Every once in a while they get crushed with a spoon handle or something to make more room. Eventually, like you, they get ground up into a soil amendment. This is much easier to do when they are dried and older. Then they get ground up and go out with the plants that get blossom end rot… Zucchinis and tomatoes and squashes. They need to be MUCH finer to protect from bugs and feed plants than what you show in your images, though. The calcium has to be able to penetrate the soil to the roots and be in a fine enough powder to actually effect the insects otherwise they will just crawl right over it. Think of a more powder, granular or or sand like substance. You can also put chunks like that in holes before you plant the plants and the roots and soil microbes will help break them up into a usable form.


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