Top Plants That Benefit Most from Eggshells: Boost Your Garden with Nutrient-Rich Shells

I’m excited to share with you an article about one of the most unique natural fertilizers you can find: eggshells. Did you know that eggshells are not only good for chickens to peck on, but also effective in nurturing your potted plants? It might sound too good to be true, but your morning breakfast waste can do wonders for your beloved greenery. In this article, we’ll explore which plants benefit the most from eggshells and how you can use them as an organic fertilizer.

If you’re a plant lover, you probably already know that every type of plant requires different nutrients to thrive. Some plants love nitrogen, others need potassium, and some appreciate a blend of various minerals. However, there’s one mineral that is vital for all plants and that’s calcium. Calcium is essential for root development, cell creation, and photosynthesis. And that’s where eggshells come into play. Eggshells are composed of calcium carbonate, which is one of the most effective natural sources of calcium for plants. When crushed and infused into soil, eggshells slowly release calcium, ensuring the plants have access to this essential nutrient.

Now, you might be wondering which plants benefit the most from eggshells? The answer is most plants! However, some plants, such as tomatoes, peppers, and roses, are particularly fond of the extra calcium boost. As heavy feeders, these plants demand a lot of nutrients to grow and develop healthy fruits and blooms. By adding eggshells to the soil, you effectively provide them with the calcium they need to thrive. So, whether you’re a seasoned gardener or just a beginner, grabbing your eggshells from the compost isn’t just sustainable, but also effective in giving your plants a leg up.

Benefits of using eggshells in gardening

Eggshells are often seen as a waste product in the kitchen, but did you know that they can actually be beneficial for your plants in the garden? Here are some of the top benefits of using eggshells in gardening:

  • Source of calcium: Eggshells are rich in calcium, which is an essential nutrient for plants. Including eggshells in your soil can help prevent blossom end rot in tomatoes, peppers, and other plants that require calcium for healthy growth.
  • Natural pest control: Crushed eggshells can act as a natural pest deterrent. The sharp edges of the shells can deter slugs, snails, and other pests from crawling on your plants. You can scatter crushed eggshells around the base of your plants to create a barrier that insects won’t want to cross.
  • Slow-release fertilizer: Eggshells break down slowly in the soil, releasing nutrients gradually over time. This can help provide your plants with a steady supply of calcium and other nutrients, without overloading them with fertilizer all at once.

If you’re interested in using eggshells in your gardening routine, there are a few different ways you can incorporate them into your soil. One option is to crush the eggshells into small pieces and sprinkle them around the base of your plants. Another option is to grind the eggshells into a fine powder and mix them into your compost or soil mixture before planting.

Eggshells Calcium (mg per 100 g)
Raw eggshells 800 – 1000
Baked eggshells 1700 – 2000
Boiled eggshells 400 – 500

It’s worth noting that while eggshells can benefit your plants, they won’t necessarily make up for other deficiencies in your soil. If you’re struggling to grow healthy plants, it’s important to address any underlying issues with your soil composition, watering practices, or other factors that could be affecting plant growth.

How Eggshells Act as a Natural Fertilizer for Plants

Using eggshells for fertilizing plants is not only easy, but it is also one of the most effective natural ways to add nutrients to the soil. Here are some of the ways eggshells act as a natural fertilizer for plants:

  • Provides calcium: Eggshells are known for their calcium content, making them perfect for plants that need this mineral. Plants like tomatoes, peppers, and eggplants benefit a lot from eggshells. Calcium is crucial for a plant’s cell walls, growth, and strengthening the overall structure of the plant.
  • Controls pests: Eggshells act as a natural pest repellant due to the sharp edges of the crushed shells. Eggshells deter snails, slugs, and other insects from crawling onto plants that are susceptible to these pests. You can sprinkle crushed eggshells around the plant’s base to prevent pests from getting near it.
  • Improves seed germination: Crushed eggshells can improve seed germination by adding nutrients to the soil, making it more conducive to growing seedlings. The calcium in the eggshells also helps to protect the young seedlings from diseases.

When using eggshells for fertilizing plants, it is best to crush the eggshells into small pieces and mix them into the soil. Alternatively, you can create a liquid fertilizer by boiling the crushed eggshells in water, then cooling and straining the mixture before applying it to the soil.

Here is a table showing the calcium content of eggshells compared to other common sources of calcium:

Source of Calcium Calcium Content per 100g
Eggshells 800-1000mg
Milk 113mg
Broccoli 47mg
Kale 150mg

As you can see, eggshells have an impressive calcium content, making them an affordable and natural source of nutrients for your plants.

Eggshell tea: A nutrient-rich liquid for plant growth

Eggshells are a cheap and effective way to give your plants the nutrients they need to grow big and healthy. One popular method is to make “eggshell tea,” which is a liquid fertilizer made by steeping eggshells in water. Here are some of the benefits:

  • Calcium: Eggshells are primarily made of calcium carbonate, which is an essential nutrient for plants. Calcium helps strengthen cell walls, which makes plants more resistant to disease and pests. It also helps regulate nutrient uptake and improves overall plant growth.
  • Magnesium: Eggshells also contain magnesium, another important nutrient for plant growth. Magnesium is a component of chlorophyll, which is what gives plants their green color. It also helps with photosynthesis and energy production in plants.
  • Other nutrients: In addition to calcium and magnesium, eggshells contain small amounts of other micronutrients like potassium, phosphorus, and nitrogen. These nutrients are essential for plant growth and development.

Making eggshell tea is easy. Here’s how:

1. Rinse your eggshells thoroughly to remove any egg residue.

2. Crush the eggshells into small pieces. You can use a mortar and pestle, a coffee grinder, or even a rolling pin to do this.

3. Put the crushed eggshells into a jar and cover them with water. The amount of water you use will depend on how many eggshells you have, but a good rule of thumb is to use about 1 cup of water for every 5 eggshells.

4. Let the mixture sit for a few days, stirring occasionally, until the water turns a light brown color.

5. Strain out the eggshells and compost them. The liquid that’s left is your eggshell tea.

Plant Type Benefit of Eggshell Tea
Tomatoes Helps prevent blossom end rot
Squash Provides essential nutrients for fruit development
Cabbage Helps prevent clubroot disease
Peppers Improves overall plant growth and productivity

Eggshell tea can be used on a variety of plants, but some benefit more than others. The table above shows a few examples of plants that are particularly responsive to eggshell tea. However, it’s important to note that every plant has different nutrient requirements, so you may need to supplement with other fertilizers as well.

Types of Plants That Benefit Most from Eggshells

While eggshells can be beneficial to most plants, there are certain types that will benefit more than others. Here are the top categories of plants that will see the most positive effects from using eggshells:

  • Tomatoes: Eggshells are a great source of calcium, which can help prevent blossom end rot in tomatoes. Simply crush up the eggshells and mix them into the soil around the tomato plant.
  • Peppers: Like tomatoes, peppers can also benefit from the calcium in eggshells. Additionally, eggshells can help deter pests like slugs and snails that may want to munch on the young pepper plants. Crush the eggshells and sprinkle them around the base of the plant.
  • Houseplants: Indoor plants can suffer from a lack of nutrients, and eggshells can provide a great source of calcium and other minerals. Crush the eggshells and add them to the soil or compost for a slow-release nutrient boost.

But it’s not just these types of plants that can benefit from eggshells. Here are a few other categories that may see a positive impact:

  • Fruit trees
  • Herbs
  • Vegetables like broccoli, cabbage, and kale

If you want to take your eggshell usage to the next level, try making a natural fertilizer tea. Simply steep a few crushed eggshells in water for a few days, strain out the solids, and use the liquid to water your plants.

Plant Benefit How to Use Eggshells
Provides calcium Crush and mix into soil or compost
Deters pests Crush and sprinkle around plant base
Nutrient boost Add to soil or compost for slow-release

The key takeaway is that eggshells can be used in a variety of ways to benefit a wide range of plants. Whether you’re trying to prevent blossom end rot, deter pests, or just give your indoor plants a nutrient boost, eggshells can be a simple and effective solution.

How to Properly Prepare and Use Eggshells in Your Garden

Eggshells are an excellent source of calcium, a nutrient that plants need for healthy growth. They also contain other essential minerals, such as magnesium and potassium. However, using eggshells in your garden requires some preparation to ensure they provide the most benefit to your plants.


  • Save eggshells from your kitchen and rinse them in water to remove any remaining egg white or yolk.
  • Leave the eggshells out to dry completely.
  • Grind the eggshells in a food processor or coffee grinder until they are a fine powder. This ensures that the calcium in the eggshells is more readily available to your plants.


There are several ways to use eggshells to benefit your garden:

  • Add the eggshell powder directly to the soil around your plants. Sprinkle a handful of eggshell powder onto the soil and gently work it into the top few inches of the soil.
  • Make a tea out of the eggshell powder. Put a few tablespoons of eggshell powder into a gallon of water and let it sit for a few days. Water your plants with the eggshell tea to provide them with a nutrient boost.
  • Use eggshells as a natural pest repellent. Crush up a few eggshells and sprinkle them around the base of plants that are susceptible to snails and slugs. The sharp edges of the eggshells will deter the pests from crawling over them.


Eggshells are an affordable and natural way to provide your plants with essential nutrients. By properly preparing and using eggshells, you can give your plants the best chance at healthy growth.

Pros Cons
Cost-effective May attract pests if not crushed properly
Easy to prepare Can take time to accumulate enough eggshells for garden use
Provides essential nutrients to plants Requires additional preparation steps compared to chemical fertilizers

Overall, using eggshells in your garden can provide numerous benefits to your plants without the use of harsh chemicals or expensive fertilizers. With proper preparation and application, eggshells can help your garden flourish.

Comparing the efficacy of eggshells with other types of fertilizers

When it comes to fertilizing plants, there are various options available in the market. Inorganic fertilizers, organic fertilizers, compost, and manure are some of the popular choices. However, using eggshells as a natural fertilizer for plants has gained immense popularity lately. But how does it compare to other types of fertilizers in terms of efficacy?

  • Inorganic fertilizers: Inorganic fertilizers are made from synthetic materials and chemicals. They are composed of nitrogen, phosphorus, and potassium (NPK) and are often marketed as a fast and effective way to feed plants. However, overuse of inorganic fertilizers can damage soil quality and harm the environment. Eggshells, on the other hand, provide slow-release calcium, magnesium, and other micronutrients to the soil without the risk of environmental pollution.
  • Organic fertilizers: Organic fertilizers are made from natural materials such as compost, manure, and bone meal. They are a great source of nutrients and help improve soil quality. However, they can be expensive and time-consuming to produce. Eggshells, on the other hand, are readily available and inexpensive, making them a popular choice among gardeners.
  • Compost: Compost is produced by breaking down organic materials such as leaves, grass, and food scraps. It is a great source of nutrients for plants and helps improve soil quality. However, it takes time to produce compost, and the process can be messy and require a lot of effort. Eggshells, on the other hand, can be easily crushed and added to the soil as a natural fertilizer.

While eggshells may not be as potent as other types of fertilizers, they offer a sustainable and eco-friendly alternative. Additionally, using eggshells as a natural fertilizer can help reduce waste and provide a healthy source of calcium and micronutrients to plants.

But how do eggshells compare to other fertilizers in terms of nutrient content? Here is a table comparing the macronutrient content of eggshells with other popular fertilizers:

Nitrogen (%) Phosphorus (%) Potassium (%) Calcium (%)
Eggshells 0.8 0.4 0.3 95
Inorganic fertilizers 8-15 2-5 5-8 Varies
Organic fertilizers Varies Varies Varies Varies
Compost Varies Varies Varies Varies

While the macronutrient content of eggshells is not as high as inorganic fertilizers, they are a great source of calcium and other micronutrients. Additionally, eggshells provide long-lasting and slow-release nutrients, making them a sustainable and eco-friendly option for gardeners.

Eggshell usage in organic and sustainable gardening practices

Using eggshells in gardening is an eco-friendly way to get rid of your kitchen waste and provide nutrient-rich soil for your plants. Eggshells not only serve as a great source of calcium, but they also have many other benefits for your garden. Here are some of the plants that benefit most from eggshells:

  • Tomatoes – Calcium deficiency is quite common in tomato plants, and eggshells are a great way to tackle it. Crushed eggshells can be added to the soil or compost before planting tomatoes to provide the necessary calcium for the plant’s growth.
  • Roses – Eggshells are rich in calcium carbonate, which is essential for rose plants. Adding crushed eggshells to the soil can help prevent diseases such as blossom end rot and provide essential nutrients for the plant.
  • Peppers – Like tomatoes, pepper plants also need calcium for their growth. Adding crushed eggshells to the soil can improve the pepper plant’s resistance to diseases and pests.

Eggshells can also be used to deter pests such as slugs and snails. These pests are a common nuisance in many gardens and can be difficult to get rid of. Crushed eggshells sprinkled around the base of plants can deter these pests as their sharp edges irritate the soft bodies of slugs and snails.

Besides being beneficial to the plants themselves, using eggshells in your garden is also a sustainable gardening practice. It reduces the amount of waste that ends up in landfills and provides a natural source of nutrients for your garden. Additionally, eggshells break down slowly, releasing nutrients over time, which means you don’t have to keep replenishing them.

If you’re looking to add eggshells to your garden, it’s important to note that they should be cleaned and crushed before use. Boiling the eggshells first can also help remove any bacteria or pathogens that may be present, making them safe for use in gardening. Here’s a table summarizing some of the benefits of using eggshells in your garden:

Benefits of using eggshells in gardening
Provides a source of calcium for plants
Improves soil quality
Deters pests such as slugs and snails
Reduces kitchen waste

Overall, using eggshells in gardening is a sustainable and beneficial practice that can improve the health of your plants and reduce waste. Consider adding crushed eggshells to your soil or compost to provide essential nutrients and deter pests in a natural and eco-friendly way.

FAQs about what plants benefit most from eggshells

1. How do eggshells benefit plants?

Eggshells are rich in calcium, which is an essential nutrient for plant growth. They can also help deter pests and regulate soil acidity.

2. Can all plants benefit from eggshells?

Most plants can benefit from eggshells, but some may be more sensitive to changes in soil pH. It’s best to research the specific needs of your plants before adding eggshells to the soil.

3. Can I add eggshells directly to the soil?

Yes, you can crush up eggshells and add them directly to the soil around your plants. You can also add crushed eggshells to compost to enrich the soil.

4. How often should I add eggshells to my plants?

You can add eggshells to your plants as often as once a month, or as needed based on the specific needs of your plants. It’s important to monitor the soil pH to ensure it doesn’t become too alkaline.

5. What types of plants benefit most from eggshells?

Plants that require high levels of calcium, such as tomatoes, peppers, and eggplants, will benefit greatly from eggshells. Additionally, plants that are susceptible to pests such as snails and slugs, like lettuce and cauliflower, will benefit from the deterrence provided by eggshells.

6. Can I use eggshells as a natural pesticide?

While eggshells won’t kill pests outright, they can act as a deterrent. Crushed eggshells can be sprinkled around plants to create a rough surface that pests like slugs and snails find difficult to navigate.

7. What should I do if I add too many eggshells to the soil?

If the soil becomes too alkaline due to an abundance of eggshells, you can balance it out by adding acidifying agents such as coffee grounds or garden sulfur to lower the pH levels.

Closing thoughts

Thanks for reading about what plants benefit most from eggshells! Remember to research the specific needs of your plants before adding eggshells to the soil. Crushed eggshells can be added directly to the soil or to compost, and can be used to deter pests and increase calcium levels. Visit our website for more gardening tips and tricks, and happy planting!