Daily gardening tips: Use crushed eggshells to deter slugs and provide calcium to the soil

Gardening enthusiasts often encounter the annoying presence of slugs in their gardens, causing damage to plants

Daily gardening tips: Use crushed eggshells to deter slugs and provide calcium to the soil

In this article:


Gardening enthusiasts often encounter the annoying presence of slugs in their gardens, causing damage to plants. Additionally, plants require essential nutrients, such as calcium, for optimal growth. Fortunately, there is a simple solution that can address both issues simultaneously: crushed eggshells. This article will explore how you can effectively use crushed eggshells to deter slugs and provide calcium to the soil, promoting a healthy and thriving garden.

Benefits of Using Crushed Eggshells

1. Organic and Eco-Friendly: Using crushed eggshells is an organic and environmentally friendly alternative to chemical slug repellents. It avoids introducing harmful substances to your garden, making it safe for your plants, soil, and beneficial insects.

2. Slug Deterrent: The jagged edges of crushed eggshells create an uncomfortable barrier for slugs, preventing them from crossing into your plants' territory. The slugs' soft bodies get scratched, causing discomfort and deterring them from causing damage to your plants.

3. Nutrient-Rich Soil: Eggshells are primarily composed of calcium carbonate, making them an excellent source of calcium for your soil. When the eggshells decompose, they release calcium slowly, providing a long-term source of this essential nutrient for your plants.

How to Use Crushed Eggshells in Your Garden

Step 1: Collecting and Preparing the Eggshells

Collecting eggshells is a straightforward process that helps reduce waste. After using eggs in your kitchen, rinse the eggshells with water to remove any remaining egg white or yolk. Place them in a container to allow them to air dry completely. Once dry, crush them into small pieces. You can use various methods to crush the eggshells, such as crushing them with your hands, using a mortar and pestle, or pulsing them in a blender or food processor.

Step 2: Applying the Crushed Eggshells

1. Creating a Protective Barrier: Sprinkle a generous amount of the crushed eggshells around the base of your plants or create a protective line around your garden beds. Focus on areas where slugs are most likely to enter, such as near moist and shady spots.

2. Refresh Regularly: To maintain the slug-repellent properties, it is important to refresh the crushed eggshells regularly, especially after rainfall or watering your plants. This ensures that the barrier remains intact and effective.

Step 3: Composting the Eggshells for Nutrient Release

1. Grinding the Eggshells: To speed up the decomposition process and enhance nutrient availability, grind the previously crushed eggshells into a finer powder using a blender or coffee grinder. This step is optional but beneficial.

2. Adding to Your Compost: Incorporate the crushed or powdered eggshells into your compost pile. As the eggshells gradually break down, they release calcium into the compost, enriching it with essential nutrients.

3. Applying to Garden Beds: Once your compost has fully decomposed, mix it into your garden beds or use it as a top dressing around your plants. The calcium-rich compost will enhance the overall fertility of the soil, promoting healthy plant growth.

Additional Tips for Slug Control

While crushed eggshells are an effective slug deterrent, there are a few additional measures you can take to enhance slug control in your garden:

1. Remove Slug Hiding Spots: Regularly remove debris, fallen leaves, and garden clutter where slugs tend to hide during the day.

2. Encourage Predators: Attract natural slug predators to your garden, such as birds, frogs, and toads. You can create bird feeders, install birdhouses, or create a small pond to encourage these helpful creatures to visit your garden.

3. Beer Traps: Bury a small container near slug-prone plants and fill it with beer. Slugs are attracted to the fermented scent and will crawl into the container, drowning in the beer.


Using crushed eggshells in your garden provides multiple benefits: deterring slugs while providing a slow-release source of calcium to your soil. The process of collecting, preparing, and applying crushed eggshells is simple and environmentally friendly. By incorporating this gardening tip into your routine, you can enjoy a slug-free garden with healthy, nutrient-rich soil for your plants to thrive.

More Tips

You might also like

  • How to grow Damsons

    Welcoming you to the world of growing Damsons, this article aims to provide you with all the information you need to successfully cultivate these delicious fruits in your backyard or garden

  • How to grow Lychees

    Lychees are delicious and tropical fruits that are highly sought after for their unique flavor and juicy texture

  • How to grow Passionfruits

    Passionfruit is a delicious tropical fruit that is enjoyed by many for its unique flavor and versatility

  • How to grow Chinese Evergreens

    Chinese Evergreens (Aglaonema) are popular indoor plants known for their vibrant foliage and ability to thrive in low light conditions

Gardening jobs for May

Read our checklist of gardening tasks to do in your garden this May →.

Daily gardening tips: day 144

Use cardboard or newspaper under mulch to suppress weeds