PoriPurno News Desk | August 10, 2025
A beautiful and healthy garden requires proper care and the right kind of fertilizer. While many gardeners are enthusiastic about gardening, not everyone knows the best way to apply natural fertilizers. Today, we explore the benefits and methods of using eggshells and eggshell-based compost for roof gardens, backyard plots, or commercial plantations.
Why Eggshells Are Beneficial for Plants
Eggshells are rich in macro-nutrients essential for plants, especially calcium carbonate, which supports healthy growth. Besides calcium, eggshells contain important trace minerals like iron, copper, manganese, zinc, fluorine, chromium, and molybdenum. Calcium deficiency in plants can stunt the development of flowers, stems, and roots, and cause deformation, black spots on leaves and fruits, and yellowing along leaf edges.
Preparing Eggshell Fertilizer or Compost
To make eggshell fertilizer effective, first collect enough eggshells and dry them thoroughly. Once dried, crush or grind the shells into a fine powder using a blender, grinder, or mortar and pestle. It is crucial to achieve a powdery consistency rather than coarse granules because fine powder mixes faster with soil and releases minerals more efficiently. Larger granules take longer to break down and may attract pests like ants and insects, which can carry away nutrients.
How to Apply Eggshell Fertilizer
- Dosage for Potted Plants:
- For an 8-inch pot, use 1 tablespoon of powdered eggshell.
- For a 10-inch pot, use 1 tablespoon.
- For a 12-inch pot, use 1.5 tablespoons.
- Application Method:
Mix the eggshell powder with water to create a slurry and apply it around the base of plants. This method is especially effective for vegetables like tomatoes and eggplants in treating waterborne diseases and yellowing leaves. For ornamental plants such as roses, eggshell fertilizer improves flower production and overall growth when applied early in the plant’s development. - When preparing soil mixes for pots, add crushed eggshell powder to the soil before planting.
- Before applying eggshell fertilizer to potted plants, loosen the soil by gently poking or aerating it, then sprinkle the powder evenly around the base.
Eggshell Infused Water
Boil 5 eggshells in one liter of water. Let the solution cool and keep it for up to 24 hours in warm weather. Spray or pour this nutrient-rich water on plants or soil to encourage faster growth and improved flowering.
Pest Control Tip
Eggshell fertilizer may sometimes attract ants and pests. To prevent this, mix neem or custard apple leaf powder with the eggshell powder before application, providing natural pest protection.
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Enhanced Growth Mixture
Blend two eggshells, one banana peel, and three teaspoons of used tea leaves. Use this mixture monthly to boost plant growth. Always keep the soil moist before applying fertilizer, and apply fertilizers preferably during the evening for best absorption.
Protecting Plants from Pests
Applying finely powdered eggshell around plants acts as a natural barrier against slugs, insects, and other pests.
Using Eggshells for Seed Germination
Carefully crack eggs so the shells remain mostly intact. Fill them with nutrient-rich soil and plant up to three seeds inside. Once the seeds germinate, select the healthiest seedling and remove the others. Place the eggshell planters near a window with partial sunlight. After three weeks, transplant the seedling along with the eggshell into a larger pot or garden bed. The eggshell will gradually decompose, enriching the soil.
Using eggshells as a natural fertilizer is an easy, eco-friendly way to nourish your plants and reduce waste. Incorporate this method into your gardening routine for healthier, more vibrant plants and a flourishing garden.
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