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adding eggshells (calcium)

What happens if I add eggshells (calcium)? We are doing a science experiment on plant growth in a cup. We are using calcium with brown and white eggshells, and one of our cups has no calcium in it. Which one will grow the fastest?

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1 Comment To "adding eggshells (calcium)"

#1 Comment By Nikki On 02/09/2012 @ 7:35 am

It is difficult to say which will grow the fastest…that’s the point of experimenting. While crushed eggshells are great for the soil, however, it usually takes some time for them to break down. Therefore, you may not see results right away as you might with other calcium mediums.

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