Introduction

Eggshells aren’t just kitchen waste—they’re a natural, nutrient-packed booster for your garden. Rich in calcium, trace minerals, and a little extra organic matter, eggshells can help strengthen plant stems, prevent blossom-end rot, and even deter pests. Here are 14 plants that love a sprinkle of eggshells and tips on how to use them effectively.

14 Eggshell-Loving Plants

Tomatoes – Calcium-rich eggshells help prevent blossom-end rot and encourage strong fruit development.

Peppers – Like tomatoes, peppers benefit from calcium for healthy growth and stronger stems.

Eggplants – Prevents nutrient deficiencies that cause yellowing and poor fruit formation.

Cucumbers – Helps strengthen cell walls and improves resistance to disease.

Zucchini – Supports vigorous growth and abundant yields.

Squash – Provides calcium to prevent soft spots on fruits.

Strawberries – Strengthens delicate plants and encourages larger, juicier berries.

Roses – Encourages vibrant blooms and helps reduce powdery mildew.

Lettuce – Adds gentle nutrients for crisp, healthy leaves.

Spinach – Boosts calcium content in the soil for better leafy growth.

Broccoli – Supports strong stalks and nutrient-rich florets.

Cabbage – Helps prevent splitting heads and supports consistent growth.

Herbs (Basil, Thyme, Oregano) – A light dusting can improve growth and flavor.

Orchids (potted) – Crushed eggshells add minerals to potting mix without overloading roots.

How to Use Eggshells in Your Garden

Crush or grind them finely to help them break down faster in soil.

Sprinkle around the base of your plants as a natural calcium supplement.

Mix into compost to enrich your compost with extra minerals.

Make eggshell tea: Boil crushed shells in water, let cool, and water your plants for a gentle mineral boost.

Pest deterrent: Sprinkle larger pieces around plants to discourage slugs and snails.

Tips & Tricks