Eggshells are an excellent organic fertilizer because they are rich in calcium carbonate (CaCO₃), which strengthens plant cell walls, prevents diseases like blossom end rot, and improves soil structure.
Benefits of Eggshell Fertilizer
✅ Rich in Calcium – Essential for plant growth, strong roots, and preventing calcium deficiencies in tomatoes, peppers, and eggplants (which develop blossom end rot).
✅ Improves Soil pH – Helps neutralize acidic soil, making it more suitable for a wider variety of plants.
✅ Enhances Soil Structure – Loosens compact soil and promotes better drainage.
✅ Boosts Microbial Activity – Beneficial microbes in the soil break down eggshells, enriching the soil with nutrients.
✅ Repels Pests – Crushed eggshells have sharp edges that can deter slugs, snails, and some crawling insects.
How to Make & Use Eggshell Fertilizer
1️⃣ Crushed Eggshell Fertilizer (Slow Release)
Rinse and dry eggshells to prevent odor.
Crush them into small pieces or powder using a mortar & pestle, blender, or rolling pin.
Sprinkle around the base of plants or mix into the soil before planting.
2️⃣ Eggshell Tea (Liquid Fertilizer for Fast Absorption)
Boil crushed eggshells in water for 5–10 minutes.
Let the mixture sit overnight.
Strain and use the nutrient-rich water to water plants.
3️⃣ Eggshell Compost
Add crushed eggshells to your compost bin to enrich compost with calcium.
Best Plants for Eggshell Fertilizer
✅ Tomatoes
✅ Peppers
✅ Eggplants
✅ Roses
✅ Leafy Greens