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What Plants Like Coffee Grounds and Eggshells? Green Thumb Secrets!

From beautiful flowering plants to juicy fruits and vegetables, many plants can extract numerous benefits from coffee grounds and eggshells. These nutrients provide both immediate and long-term advantages, ensuring plants don’t just survive but truly thrive.

What Plants Like Coffee Grounds

Coffee grounds, with their slight acidity and rich nitrogen content, are a treat for many plants. Acid-loving plants, in particular, find coffee grounds to be especially beneficial. Plants like rhododendrons, blueberries, and azaleas appreciate the acidity introduced by coffee, as it helps maintain the pH levels they flourish.

Apart from these, coffee grounds also assist in making the soil more friable, which in turn improves aeration and drainage. This proves beneficial for plants that don’t enjoy waterlogged roots, allowing them to have healthier growth and stronger root systems.

Plants That Like Eggshells

Eggshells play a crucial role in supplementing calcium in the garden. Plants such as tomatoes, peppers, and broccoli, which are susceptible to calcium deficiencies, can significantly benefit from the addition of crushed eggshells to their base.

Additionally, since calcium plays a pivotal role in the cell wall structure, plants supplemented with eggshells often show robust growth and improved stability. This can lead to not just healthier plants but also increased yields, especially in fruit-bearing plants.

List of Plants That Like Coffee and Eggshells in Their Soil:

Elephant Ears:

These tropical beauties adore the combined nutrients of coffee grounds and eggshells. Their large, lush leaves especially benefit from the added nitrogen and calcium.


Hibiscus plants, with their vibrant blooms, extract nutrients from both coffee and eggshells. This not only ensures healthy growth but also promotes more prolific flowering.


Tomatoes, being susceptible to conditions like blossom end rot due to calcium deficiency, cherish the addition of eggshells. The nitrogen from coffee further ensures they grow lush and hearty.


Much like tomatoes, eggplants require calcium to avoid blossom end rot. The mix of coffee and eggshells provides them with a well-rounded nutrient boost.


These golden wonders are known to benefit from the slight acidity of coffee grounds. When combined with the calcium from eggshells, they truly shine and bloom more vibrantly.


Leafy greens like lettuce appreciate the slow-release nitrogen from coffee. The added calcium from eggshells further aids in developing crisp, fresh leaves.


For juicier and more robust strawberries, the combination of coffee and eggshells can work wonders. It not only strengthens the plant but also leads to healthier fruit production.

How to Use Coffee Grounds and Eggshells in Gardening

Using these natural resources efficiently can make a significant difference in plant health and yield. Knowing how to integrate them into gardening practices is key.

How to Use Coffee Grounds To Fertilize Your Plants

Direct application is one of the most straightforward ways to utilize coffee grounds. By spreading the used grounds on top of the soil, plants can directly benefit from the slow release of nitrogen and other essential nutrients.

Incorporating coffee grounds into the soil before planting can also prove beneficial. This method ensures that the grounds are well-mixed with the garden soil, providing a more consistent nutrient base for the plants to draw from.

Composting Coffee Grounds

Composting is a gardener’s goldmine, turning organic waste into a nutrient-rich soil amendment. By adding coffee grounds to a compost pile or bin, you can enhance the nitrogen content of the final compost. The worms in the compost adore coffee grounds, aiding in faster decomposition and richer compost.

Sprinkling Coffee Grounds

For plants that specifically adore the acidity of coffee grounds, a light sprinkle around their base can suffice. This not only provides nutrients but also acts as a deterrent for pests.

How To Use Eggshells To Fertilize Your Plants

Eggshells can be used in their crushed form or powdered form. By sprinkling crushed eggshells around the plant base, you provide a slow-release source of calcium, which the plants can draw upon over time.

For a more immediate release, powdered eggshells (which can be achieved by grinding them in a blender) can be mixed with the soil. This ensures a quick and consistent release of calcium, especially beneficial for plants currently showing signs of calcium deficiency.

How do you mix coffee grounds with soil?

Blending coffee grounds with soil is a simple task. Spread a layer of coffee grounds on the soil surface and then integrate them using a shovel or hand tools. This ensures even distribution, providing plants with consistent access to the nutrients from the coffee grounds.

Plants and Their Preferences

Just as humans have varied tastes, plants too have their preferences when it comes to nutrients. While many adore coffee and eggshells, some might not be as appreciative.

What Plants Don’t Like Coffee Grounds

Some plants prefer alkaline conditions and might not respond well to the added acidity from coffee grounds. Plants like lavender, clematis, and some herbs might find coffee grounds less beneficial than others. Therefore, it’s essential to understand the pH preferences of your plants before introducing coffee grounds.

Are coffee grounds and eggshells good for all plants?

Most plants will benefit from the nutrients these provide, but not all plants need the same amounts or types of nutrients. It’s essential to know each plant’s specific preferences and requirements. Overdoing it can sometimes be as harmful as not doing enough. For instance, while nitrogen is beneficial for leafy growth, too much of it can inhibit the flowering and fruiting processes in many plants.

Do roses like coffee grounds and eggshells?

Roses indeed find both coffee grounds and eggshells beneficial. The nitrogen in coffee grounds promotes lush leaf growth, while the calcium in eggshells supports robust cell development in the plant. Additionally, the slightly abrasive nature of eggshells can deter pests like slugs and snails, which occasionally plague rose gardens.


Understanding the nutrient requirements and soil preferences of various plants is crucial for any gardener. Natural amendments like coffee grounds and eggshells provide an eco-friendly, cost-effective way to nourish plants and promote healthy growth. However, always remember that balance is vital. Overdoing even organic materials can upset the delicate nutrient balance plants require. With proper research and careful application, gardens can flourish, and plants can showcase their full potential.


What can I fertilize with coffee grounds?

Almost any plant can benefit from the nitrogen in coffee grounds, especially leafy vegetables and acid-loving plants like blueberries and azaleas. However, it’s always essential to use them in moderation.

Does coffee fertilize flowers?

Yes, coffee grounds can be beneficial for many flowering plants due to the nitrogen content which promotes healthy plant growth and robust flowering.

Do worms like coffee grounds?

Worms indeed love coffee grounds. When added to compost or vermiculture bins, they help attract worms, aiding faster decomposition and resulting in richer soil.

Can I water my plants with coffee?

While it might be tempting, it’s better to use coffee grounds rather than liquid coffee. The latter can be too acidic and can harm plants if not diluted properly.

Can I mix coffee grounds and eggshells together for my garden?

Absolutely! The combination provides a balanced nutrient boost of nitrogen from coffee and calcium from eggshells.

Which plants do not like eggshells?

Plants that prefer acidic soils might not benefit as much from the alkalinity of eggshells. However, in most cases, the calcium provided is beneficial.

Can too much coffee grounds hurt plants?

Yes, excessive amounts of coffee grounds can lead to over-acidity in the soil and can harm plants. Always use in moderation.

Which plants benefit from eggshells?

Tomato plants, peppers, and other plants prone to calcium deficiency find eggshells particularly beneficial.

Can I put eggshells directly in my garden?

Yes, crushed eggshells can be sprinkled directly around plants to provide a slow-release source of calcium.

Can you put eggshells in potted plants?

Absolutely. Adding crushed or powdered eggshells to potted plants can provide them with essential calcium.

Can you put too many eggshells in your garden?

Just like any other amendment, moderation is key. Excessive eggshells can make the soil too alkaline, which might not be ideal for all plants.

Hi there! I'm Aneela. My love for coffee has taken me around the world, from bean farms to cozy cafés. I've spent years immersing myself in everything coffee-related, and I'm excited to share my discoveries with you. Dive in with me, as we explore the delightful world of coffee together!

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