Don’t toss out eggshells. Here are 12 brilliant ways to reuse them in your garden

Best for: Tomatoes, peppers, eggplants, and other calcium-loving crops.
2. Using Eggshells to Deter Pests
Sharp edges of eggshells deter soft-bodied pests like slugs and snails.
How: Use 5–6 crushed eggshells per square foot.
Application: Create a ring around plant stems about 2 inches wide and ½ inch thick.
Reapply after rain or watering.
3. Enhancing Compost with Eggshells
Eggshells improve compost nutrient balance and pH.
How: Rinse and crush before adding.
Ratio: Add about 12 eggshells per cubic foot of compost.
Tip: Grinding shells into powder accelerates decomposition.
4. Eggshells for Seed Starters
Biodegradable and nutrient-rich seedling containers.
How:
Crack eggs near the top, rinse, and dry.
Fill each shell half with moist potting mix.
Plant 1–2 seeds per shell.
Transplanting: Crush the shell lightly before planting to allow root expansion.
5. Creating Eggshell Tea for Plants
Quick calcium boost through water-soluble nutrients.
Recipe:
Boil 1 gallon of water.
Add 10–12 crushed eggshells.
Let steep for 24 hours, then strain.
Use: Water plants once every 2–4 weeks.
6. Eggshells as a Calcium Supplement for Soil
Helps prevent blossom end rot.
How:
Dry and grind 1 dozen eggshells into a fine powder using a blender or coffee grinder.
Mix into 1 square foot of soil at planting depth (~6 inches).
Tip: Incorporate in early spring for best results.
7. Improving Soil Aeration with Crushed Eggshells
Improves texture and drainage.
How: Crush shells into coarse pieces.
Ratio: Mix 1–2 cups of crushed eggshells per square foot into clay or compacted soil.
Best Time: During soil preparation or before planting.
8. Eggshells in Vermicomposting
Aids in worm digestion and pH balance.
Preparation:
Rinse, dry, and crush finely (powder is ideal).
Use 1 tablespoon per 1 lb of food scraps.
Frequency: Add weekly or as needed to prevent acidity buildup.