You are doing it all wrong. Here’s the right way to use eggshells as fertilizer | May 15, 2025

Eggshells – something that most people regard as mere kitchen waste – can actually be a powerhouse when it comes to enriching your garden soil. By repurposing eggshells, not only are you being environmentally conscious, you’re also providing your plants with essential nutrients that many commercial fertilizers fall short on. But, are you using them correctly?
Understanding the right way to use eggshells can dramatically enhance their effectiveness. Many people either throw them away or use them in a manner that doesn’t fully capitalize on their potential benefits. Throughout this article, we’ll explore the proper techniques that ensure you’re getting the most out of this surprising gardening gem.
The Nutrient Powerhouse
Eggshells are predominantly made of calcium carbonate, a compound that offers a rich source of calcium for plants. Calcium is crucial for various plant functions, from building cell walls to ensuring proper growth and development. Additionally, eggshells also contain small quantities of other essential minerals like magnesium and potassium.
Why Traditional Methods Fall Short
Simply tossing crushed eggshells onto your garden bed might seem like a good idea, but this approach limits their benefit. Unprocessed eggshells can take a long time to break down and become bioavailable to plants. This delay means your garden won’t immediately benefit from the added nutrients.
Proper Preparation Techniques
To unlock their full potential, here is a step-by-step guide to preparing eggshells correctly:
1. Clean the Shells
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