Will Eggshells Give Your Plants Calcium?
The truth about using eggshells in the garden and what they can (and cannot) fix.
Eggshells do contain calcium, but they are not an instant calcium treatment. Large shell pieces can remain in the soil for a very long time before breaking down. Rinsing, drying, and grinding the shells into a fine powder gives them more surface area, but they should still be viewed as a slow soil addition. Eggshells also will not quickly fix blossom-end rot on tomatoes or peppers. That problem is often connected to inconsistent watering or the plant being unable to move calcium properly—not simply a lack of eggshells in the soil. Eggshells may support the soil over time, but they are not emergency plant medicine.
Have you ever ground eggshells for your garden?
Join the conversation
Tried this, have a question, or want to share what worked for you? Leave a note — I read every one.
Sign in to leave a comment. It keeps the conversation real and the spam out.
Loading comments…