If you’ve ever wondered how to make your plants happier without using fancy stuff, you’re in the right place. We’re here to spill the beans on two things your plants like coffee grounds and eggshells. Yep, those things you usually toss in the trash can make your garden awesome. Whether you’re a pro gardener or just getting started, we’ve got the lowdown on how to use these everyday items to supercharge your plants. So, stick with us as we explore the plant-friendly powers of coffee grounds and eggshells and make your garden thrive!

What plants like coffee grounds and eggshells

What Plants Like Coffee Grounds And Eggshells

Certainly! Coffee grounds and eggshells can benefit various plants in your garden. Here’s a detailed look at the types of plants that particularly like these two natural additives:

Plants That Love Coffee Grounds:

  • Acid-Loving Plants: Coffee grounds are slightly acidic, making them excellent for plants that thrive in acidic soil. Examples include:
    • Azaleas: These vibrant flowering shrubs appreciate the acidity boost from coffee grounds.
    • Rhododendrons: These beautiful, spring-blooming shrubs also prefer acidic soil.
  • Tomatoes: Tomato plants enjoy a bit of acidity, and coffee grounds can help with soil pH regulation while providing a slow release of nutrients.
  • Blueberries: Blueberry bushes, like azaleas, love acidic soil. Coffee grounds can help maintain the proper pH level for them.
  • Camellias: These evergreen shrubs produce stunning blooms and benefit from the acidity of coffee grounds.
  • Hydrangeas: Coffee grounds can influence the color of hydrangea blooms, making them more vibrant in acidic soil.

Plants That Benefit from Eggshells:

  • Tomatoes: Eggshells are a great source of calcium, which can help prevent blossom end rot in tomato plants. Crushed eggshells placed at the base of the tomato plant can be beneficial.
  • Peppers: Peppers, like tomatoes, can also suffer from calcium deficiency, and eggshells can provide a natural solution.
  • Roses: Roses thrive with added calcium, which helps strengthen cell walls. Crushed eggshells sprinkled around the base of rose bushes can be helpful.
  • Cucumbers: Cucumber plants can benefit from the calcium boost provided by eggshells, promoting healthier fruit development.
  • Broccoli and Cauliflower: These cruciferous vegetables appreciate extra calcium to prevent nutrient deficiencies and ensure strong growth.
  • Squash and Zucchini: Adding crushed eggshells to the soil can help these plants avoid calcium-related issues and produce healthier fruits.

What Are The Top Benefits Of Using Coffee Grounds And Eggshells

Using coffee grounds and eggshells in your gardening practices can indeed lead to better results for your plants. Here’s how to make the most of these natural additives to enhance the health and vitality of your garden:

  1. Nutrient-Rich Compost:

  • Mix with Compost: Incorporate coffee grounds and crushed eggshells into your compost pile. As they decompose, they release essential nutrients like nitrogen (from coffee) and calcium (from eggshells) into the compost. This nutrient-rich compost can then be used to feed your plants.
  1. Soil Enrichment:

  • Balanced pH: Coffee grounds are slightly acidic, while eggshells are alkaline due to their calcium content. This means they can help balance the pH level of your soil. Depending on the specific needs of your plants (acid-loving or alkaline-loving), you can use either coffee grounds or eggshells to adjust the soil pH accordingly.
  • Calcium Source: Eggshells are a natural source of calcium, which is essential for plant cell wall development and overall growth. Sprinkle crushed eggshells at the base of plants that require calcium, such as tomatoes and peppers.
  1. Pest Deterrent:

  • Slugs and Snails: Crushed eggshells can act as a barrier to deter slugs and snails, which dislike the sharp edges of the shells. Create a protective circle of crushed eggshells around vulnerable plants to keep these pests at bay.
  1. Mulch and Fertilizer:

  • Coffee Grounds as Mulch: Use dried coffee grounds as mulch around your plants. They can help retain moisture, suppress weeds, and slowly release nutrients into the soil as they break down.
  • Coffee Grounds as a Fertilizer: Mix coffee grounds with soil or compost to create a nutrient-rich planting mix. Coffee grounds provide nitrogen, which is essential for plant growth. However, ensure you balance it with other nutrients as coffee grounds alone may not be sufficient.
  1. Seed Starting:

  • Eggshell Seed Starters: Use clean, cracked eggshells as biodegradable seed starters. Fill eggshells with potting soil and plant seeds directly in them. As the seedlings grow, you can transplant them, shell and all, into the garden. The eggshell will break down, providing nutrients to the young plant.
  1. Boosting Blooms:

  • Hydrangeas: Coffee grounds can influence the color of hydrangea blooms. For blue flowers, work coffee grounds into the soil to increase acidity. For pink flowers, reduce coffee ground usage to maintain a more alkaline soil pH.
  1. Responsible Application:

  • Moderation: While these natural additives can be beneficial, avoid excessive use, as too much of a good thing can disrupt soil balance. Balance is critical, so use them judiciously and monitor your plants’ response.


Why coffee grounds and eggshells work as compost

Coffee grounds and eggshells work well as compost materials due to their nutrient content, organic matter, and their ability to enhance the composting process.

Which plants benefit from coffee grounds in the soil?

Acid-loving plants like azaleas, rhododendrons, and blueberries thrive with coffee grounds. Tomatoes and some flowering shrubs also appreciate their slight acidity.

Can I use eggshells as a calcium source for my plants?

Yes, eggshells provide calcium, which is beneficial for plants like tomatoes, peppers, roses, cucumbers, and broccoli to prevent nutrient deficiencies.

How should I use coffee grounds and eggshells in compost?

Mix them with a variety of compost materials to balance nitrogen and carbon. Crush them before adding them to speed up decomposition.

Are there plants that dislike coffee grounds and eggshells in the soil?

While many plants benefit, some, like potatoes and beans, prefer less acidic soil, so it’s best to avoid excessive coffee grounds around them.

Can crushed eggshells deter pests in the garden?

Crushed eggshells can act as a deterrent for slugs and snails due to their sharp edges, protecting vulnerable plants.


In conclusion, coffee grounds and eggshells are valuable allies in gardening, offering a natural and sustainable way to nurture a variety of plants. Coffee grounds benefit acid-loving species like azaleas and tomatoes, while eggshells provide essential calcium for plants such as tomatoes, peppers, and roses. By incorporating these kitchen scraps into compost and soil, you can enhance nutrient levels, promote microbial activity, and create a balanced pH environment. However, it’s essential to use them judiciously, considering the preferences of different plants, to ensure a flourishing garden. So, whether you’re a seasoned gardener or just starting, harness the power of coffee grounds and eggshells to cultivate healthier, more vibrant plants while reducing waste in an eco-friendly manner.

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