I use eggshells as a soil enhancer. I also sterilize the shells (300 F for 30 minutes) before grinding them into a fine powder (using a mortar and pestle).

Using #Eggshells as #Lime in #Soils

Cracking the Code: Can Ground Eggshells be Used as a Liming Source?

April 2, 2025 by Leon Martinez

Excerpt: "Factors Affecting Eggshell Liming Efficacy

The efficacy of eggshell liming depends on several factors, including:

- Particle size: Finely ground eggshells are more effective at raising soil pH than coarsely ground eggshells.
- Application rate: The amount of eggshells applied to the soil can impact their effectiveness as a liming source.
- Soil type: Eggshell liming may be more effective in certain soil types, such as acidic soils with low calcium content.

Practical Applications of Eggshell Liming

If you’re interested in trying eggshell liming, here are some practical tips to get you started:

- Collect and dry eggshells: Collect eggshells from your kitchen or local farms and dry them thoroughly to prevent mold and bacterial growth.
- Grind eggshells: Grind the dried eggshells into a fine powder using a coffee grinder or mortar and pestle.
- Apply eggshells to soil: Mix the ground eggshells into the soil at a rate of 1-2 cups per 10 square feet.

Conclusion

While ground eggshells show promise as a liming source, their effectiveness depends on several factors, including particle size, application rate, and soil type. As with any liming material, it’s essential to monitor soil pH and adjust application rates accordingly. With proper use and application, ground eggshells can be a cost-effective, eco-friendly alternative to traditional liming materials."

Read more:
https://homediningkitchen.com/can-ground-eggshells-be-used-as-a-liming-source/

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