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Place the eggshells in the blender and blend for a few minutes. Stir using the spoon to dislodge any larger shell pieces and blend again until you have a fine powder. If a blender isn’t available, you can also use a mortar to grind the shells into a powder. The finer the powder, the easier it dissolves in the soil.
The process of creating an infusion is similar to the banana peel fertilizer. Add the powdered eggshells to the pot of water. Once the water starts boiling, let it simmer for an additional five minutes. Turn off the heat and allow the liquid to cool.
Transfer the liquid into the bottle, and your fertilizer is ready to be applied to the soil. Pour a small quantity of the infusion during watering. The eggshell infusion will enrich the soil with magnesium, potassium, and phosphorus.
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