Are Eggshells Good For Outdoor Plants? (Garden Advice)

Unlock the potential of your garden with an everyday kitchen item: eggshells! Our latest blog post reveals how these calcium-rich shells can work wonders for your outdoor plants. You’ll learn how eggshells can fortify cell walls and enhance overall plant health.

But the gardening journey doesn’t stop there! Have you ever pondered if cyclamens are perennials or annuals, or if gnats pose a threat to your beloved plants? Unearth all the answers and expert gardening tips by exploring our other insightful articles.

Eggshells can be a beneficial addition to your garden soil, providing important nutrients such as calcium and magnesium.
Before using eggshells in your garden, it’s recommended to crush them to allow for better absorption in the soil.
Eggshells can also be used to deter pests in your garden, such as slugs and snails.
While eggshells can offer many benefits to your garden, it’s important not to overdo it with the application as too much calcium can harm your plants.
Using eggshells as fertilizer is a cost-effective and eco-friendly option for improving your garden soil.

Are Eggshells Good For Outdoor Plants?

Eggshells are a fine source of calcium, which is essential for healthy plant growth. They also contain magnesium, sulfur and phosphorus all important nutrients that help plants grow and stay healthy.

Eggshells can be used as part of your compost pile to add nutrients, or crushed and sprinkled directly onto the soil around your plants. 

If you’re planting seeds in garden beds, try adding crushed eggshells to the soil as a way of helping them germinate more quickly. The small amount of calcium will help them develop strong roots that can get started growing even before they reach the surface.

Are Eggshells Good For Houseplants?

Yes! Eggshells are a great source of calcium and other nutrients that help houseplants grow strong leaves and healthy roots. 

You can use eggshells as part of your houseplant soil mix or compost filler, or even as an addition to potting soil. When using eggshells in this way, crush them up first so they can break down faster.

“Eggshells are not only great for adding calcium to your soil, but they can also act as a natural pest repellent. Crushed eggshells around the base of your plants can deter slugs, snails, and cutworms. Learn more about the benefits of using eggshells in your garden in our comprehensive guide.” – Are Eggshells Good for Your Garden Soil?

Are Eggshells Good For Flowering Plants?

Eggshells are good for flowering plants because they provide calcium and nitrogen to the soil. Calcium is important for strong bones and eggshells contain both calcium and phosphorus, which provide the plant with energy. 

Eggshells are also rich in potassium, an essential element that helps keep your plant’s cells healthy.

Are Eggshells Good For Vegetables?

Are eggshells good for vegetables? Yes, they are! Eggshells can be used as a fertilizer to add calcium and nutrients to your soil. 

Using them will help prevent soil erosion while also providing your plants with essential vitamins and minerals that they need to thrive. 

So if you’re looking for an easy way to give your garden an extra boost this spring or summer, try adding some crushed up eggshells into the ground around your plants!

“Banana peels may seem like waste, but they can actually provide valuable nutrients to your outdoor plants. Rich in potassium, magnesium, and calcium, banana peels can help boost plant growth and fruit production. Check out our guide to learn how to use banana peels in your garden.” – Are Banana Peels Good for Outdoor Plants?

How Do I Use Eggshells To Fertilize My Plants?

Eggshells are a good source of calcium and magnesium and can be used in compost bins. If you’re using eggshells as part of your regular garden composting routine, just toss them right in. 

Eggshells can also be mixed with other organic materials like leaves and grass clippings when making your own homemade compost. 

They can also be mixed with soil or potting mix before planting your favorite plants, or even added directly to the earth where they’ll eventually decompose into the soil.

What Are The Benefits Of Using Eggshells To Fertilize My Plants?

Eggshells are a great source of calcium, which is important for plants. They’re also full of micronutrients, like magnesium, sulfur and iron.

You can add eggshells to your soil by crushing them into small pieces first and mixing them in with other organic compost materials like leaves or grass clippings. 

Don’t worry if you break some shells while you’re doing this  it won’t make any difference to the availability of nutrients from those eggs!

What Are The Side Effects Of Using Eggshells To Fertilize My Plants?

You should avoid using eggshells on acid-loving plants like azaleas and camellias, because the high calcium content of eggshells can damage these sensitive plants.

Eggshells can be used as mulch around your plants, but they also contain fungi that may grow on the surface of soil and cause it to become compacted. 

If you use them as mulch, be sure to keep them away from any delicate roots that might be developing so they won’t get damaged by contact with fungi or insects attracted by them (see below).

“Coffee grounds are a natural and affordable way to improve soil health and boost plant growth. They can help balance soil pH, add nitrogen to the soil, and act as a natural pest repellent. Learn more about the benefits of using coffee grounds in your garden in our comprehensive guide.” – Are Coffee Grounds Good for Outdoor Plants?

Can I Use Eggshells As A Compost Filler?

Eggshells can be used as a compost filler, but they should not be used as an organic fertilizer. Eggshells are high in calcium and nitrogen, and when they decompose they act as a slow-release source of nutrients for plants. 

This can help gardeners who want to grow vegetables without using chemical fertilizers or expensive organic alternatives like manure or compost from other sources.

Do Eggshells Need To Be Crushed Before They’re Used?

You don’t need to crush the eggshells before adding them to your garden. Eggshells are already in a form that plants can absorb, so crushing them won’t make it any easier for plants to absorb them.

 If you don’t want to use an entire egg shell, simply break off pieces at the top of each end of the shell and save those for later use.

Are Fresh Or Dried Eggshells Better For Plants?

If you’re using eggshells fresh, they should be crushed first to release the nutrients. Most people do this by placing them in a plastic bag and hitting them with a hammer or other heavy object until they are small enough to sprinkle on plants as desired. 

If you have dried eggshells available, no crushing is necessary. If you’re not sure which variety of shell you have available, try crushing some of it and see if it releases any nutrient-rich juices that can be used by your plants.

“Azaleas are a popular outdoor plant that can add a pop of color to your garden. But do you know if they are indoor or outdoor plants? Our guide provides valuable information on azaleas, including whether they are indoor or outdoor plants, how to care for them, and much more.” – Are Azaleas Indoor or Outdoor Plants and Much More

Can Eggshells Be Used On Indoor Plants As Well As Outdoor Ones?

You can use eggshells on indoor plants as well as outdoor ones. Eggshells make excellent organic fertilizers for your garden, raised beds, and containers. 

If you’re growing plants in pots or planters, it’s easy to add eggshells directly into the soil as a fertilizer.

Are There Any Side Effects Of Using Eggshells In The Garden?

Yes, eggshells can be used to fertilize indoor plants as well as outdoor ones. You can also use eggshells to fertilize houseplants, flowers, vegetables and fruit trees. 

However, it is important to note that eggshells contain high amounts of calcium and should not be used on any plant that is sensitive to acidic soil conditions such as azaleas or rhododendrons.

Are There Any Risks Associated With Using Eggshells In My Garden?

You’ve probably already guessed that eggshells are a safe thing to use in your garden. They’re made of calcium carbonate, which is a natural material that won’t harm plants or animals. 

You can even add crushed eggshells directly to your compost pile without worry eggshells provide essential nutrients like calcium and magnesium that help break down organic matter into usable material for your plants.

As long as you follow the guidelines on how much fertilizer to use (more on this later), then eggshells are a great choice for any type of plant!

“Succulents are a great option for outdoor gardening, as they are low-maintenance and can survive in a variety of conditions. However, it’s important to know whether they are indoor or outdoor plants to ensure proper care. Our guide provides valuable information on succulents, including whether they are indoor or outdoor plants and how to care for them.” – Are Succulents Indoor or Outdoor Plants? Garden Advice


If you’ve decided that eggshells are the best choice for your garden, then there are plenty of ways to use them. The most obvious one is by crushing them up and sprinkling them around your plants; however, there are other options as well. 

You can also mix eggshells into potting soil or compost before planting new seeds or bulbs indoors or outside. 

If you have a worm composting bin at home (or even if not!), adding some crushed eggs will provide added nutrition while also helping with odor control.

Further Reading

Egg Shell Fertilizer Guide: Using Eggshells In Soil – This guide provides valuable information on using eggshells as fertilizer, including how to prepare them, the benefits they offer to soil, and how to use them in your garden.

Using Eggshells in the Garden – This article provides a comprehensive guide on using eggshells in your garden, including how to use them to add nutrients to your soil, deter pests, and more.


Can I use whole eggshells in my garden?

Yes, you can use whole eggshells in your garden, but it’s recommended to crush them before use to allow for better absorption in the soil.

How do eggshells benefit garden soil?

Eggshells can benefit garden soil by adding calcium, magnesium, and other trace minerals, as well as improving soil texture and pH balance.

Are there any plants that should not be fertilized with eggshells?

Plants that prefer acidic soil, such as blueberries and strawberries, may not benefit from eggshell fertilization as they can raise the pH level of the soil.

How often should I apply eggshells to my garden?

You can apply eggshells to your garden as often as once a month, but it’s important not to overdo it, as too much calcium can harm plants.

Can I use eggshells to deter pests in my garden?

Yes, crushed eggshells can be used as a natural pest repellent for slugs, snails, and cutworms, as the sharp edges of the shells can deter them from crawling over the soil.