Are Coffee Grounds Good For Garden Soil? (Find OUT)

Are you a coffee lover searching for ways to give your garden a boost? In this post, we explore the amazing benefits of using coffee grounds in your garden soil. Learn how coffee grounds can contribute to a fertile and nutrient-rich environment for your plants.

Discover the science behind orange peels and pine needles as other natural soil enhancers. By the end of this article, you’ll be equipped with the knowledge to transform your daily coffee habit into a sustainable gardening practice.

Don’t miss out on this opportunity to help your garden thrive—read on and explore the world of coffee grounds in your garden soil!

Coffee Grounds: How And Why We Use Them In Our Garden
Coffee grounds are a rich source of nitrogen, which is essential for plant growth.
Used coffee grounds can be added directly to the soil as a natural fertilizer, or used in compost or as a mulch.
Coffee grounds can help improve soil structure, increase water retention, and attract beneficial organisms such as earthworms.
However, it’s important to use coffee grounds in moderation and mix them with other organic matter to avoid nitrogen imbalance.
Used coffee filters can also be added to compost or used as a mulch.

Are Coffee Grounds Good For Garden Soil

Coffee grounds are acidic, so they can be used to balance the pH of soil. They’re also rich in nitrogen, potassium, and phosphorus three nutrients that plants need to grow strong.

Coffee grounds make an excellent compost activator because they help improve the structure of your finished product. A high-quality compost should be dark brown or black, with the texture of potting soil (it should not break apart like sand when you squeeze it). 

Coffee grounds provide carbon for this process and increase aeration by adding air through their porous structure making them perfect for improving the quality of your homemade compost!

If you don’t have a garden but still want to put your coffee grounds to work for you, try using them as mulch around plants that need extra protection from moisture loss during hot summer months (like tomatoes or peppers).

If you’re wondering whether banana peels can be used to improve your garden soil, the answer is yes! Check out our article on Are Banana Peels Good for Garden Soil? to learn more about this eco-friendly and cost-effective gardening tip.

Nutrient Content of Coffee Grounds and Effects on Garden Soil

NutrientFresh Coffee GroundsUsed Coffee GroundsInstant Coffee Grounds
pH Level6.26.95.8
Organic Matter20%30%12%

Are Coffee Grounds Good For My Compost Heap?

Coffee grounds are high in nitrogen, which is good for composting. They can also help balance the pH of your compost pile. If you want to add coffee grounds to your compost directly, it’s best to use a ratio of 1:1 with carbon materials, like dry leaves or paper. (More on that below.)

If you’re already adding coffee grounds to your compost pile and want to know what else you can do with them, here are some ideas:

Add them directly into your garden soil when planting new plantings; they will release nutrients slowly over time and improve soil structure.

Mix them with other materials such as brown leaves or cardboard egg cartons before adding them into the bottom layer of active bins; this gives microbes something to digest while holding down odors from things like fruit peels or meat scraps (if you happen to have these).

Coffee Grounds Nitrogen, Carbon and pH Content for Composting

Type of GroundsNitrogen (g/kg)Carbon (g/kg)C/N RatiopH Level
Fresh Coffee Grounds2038019:16.2
Used Coffee Grounds2.1270129:16.9
Instant Coffee Grounds2039019.5:15.8
Coffee Filters0.072002875:17.0

Can You Wash Coffee Filters And Use Them Again?

If you’re in a pinch, coffee filters can be used to filter coffee. They’re biodegradable, so they can be tossed in the compost pile when you’re done with them. 

However, if your home doesn’t have a compost bin or if municipal composting services don’t accept paper products such as coffee filters or paper towels (which are also biodegradable), then these items will end up in landfills when disposed of improperly.

If you want to use the same filter for multiple cups of coffee or if you’d like to save money by reusing the existing filters you can wash and reuse them just like any other dish towel or kitchen towel! 

Just be sure that they are completely dry before using them again; otherwise, mold could grow inside the fabric weave and ruin your pot of joe!

Do Coffee Grounds Attract Termites?

Coffee grounds might not be a good food source for termites, but they do have other benefits. The acidity of the coffee grounds will help prevent soil erosion and add nutrients to your garden. 

If you are worried about having too many pests in your garden, then adding coffee grounds to the soil may help reduce their numbers by making it less attractive to them.

Coffee grounds are not a good food source for ants either because they don’t contain enough nutrients for them to survive. They also have an acidic pH level which makes it hard for ants or other pests to grow in your soil or compost pile if you add them regularly!

Similarly, flies will not be attracted to coffee grounds as much as they would be attracted to decaying organic matter such as fruit peels or manure (which is what I use when planting my vegetable garden). 

This is because those types of materials provide more energy than just plain old brewed coffee does so these little guys just don’t want anything else after their first few sips from our favorite morning beverage!

Ashes produced from burning wood can be a great way to add nutrients to your garden soil. Our article on Are Ashes Good for the Garden Soil? Explained discusses the pros and cons of using ashes for gardening.

The Attractiveness of Common Garden Materials to Termites

MaterialAttractiveness to Termites
Coffee GroundsLow
Coconut husksLow

Do Coffee Grounds Repel Mosquitoes?

Coffee grounds are not a good repellent for mosquitoes. If you ask any biologist, they’ll tell you that coffee grounds do not affect mosquitoes at all. The acid in coffee does indeed kill off some types of bacteria; 

However, mosquitoes aren’t affected by these small changes in pH because they don’t have blood or internal organs like us humans do (they’re more like flying aquatic worms). In other words: Coffee grounds won’t keep mosquitoes away from your garden at least not directly.

However! You could use them as an indirect measure to ward off pests by creating a barrier between them and your plants’ roots by lining the edges of your beds with layers of coffee grounds (and then watering regularly). 

This will discourage insects from getting into your soil where they could wreak havoc on plant life.

Do Coffee Grounds Attract Ants?

Do coffee grounds attract ants? No, they don’t. Coffee grounds are not attractive to most insects. They’re also not particularly attractive to animals and microorganisms (except for the microorganisms that live in your gut). 

They don’t even attract bacteria all that much either! So if you worry about food poisoning from using used coffee grounds as fertilizer for your plants, don’t worry too much.

Recycling dead leaves to enrich your soil is an affordable and eco-friendly way to improve the health of your garden. Learn more about Are Dead Leaves Good for Garden Soil in our comprehensive guide on this gardening technique.

Do Coffee Grounds Keep Snakes Away?

Yes! Coffee grounds seem to have a natural aversion effect on many types of snakes.

For example, if you want to keep your garden safe from garter snakes, place coffee grounds around the perimeter of your plants in a 2-inch layer. 

If there is any question as to what kind of snake is bothering you, try sprinkling some common herbs (basil or mint) around the area too this will help keep most unwelcome visitors at bay.

Can You Make Coffee With Sea Water?

For now, it’s best to stick with fresh water. Coffee made with seawater will have a salty aftertaste and no one likes that. If you’re curious about trying seawater coffee at home, here are some instructions:

  • Cook raw coffee beans in the salt water until they’re soft and black.
  • Grind the beans into a powder while they’re still warm (to help them release more flavor).
  • Pour out any excess saltwater left in your pot after cooking your beans; add sugar and milk instead! Enjoy your brew it’s sure to be delicious!

Curious about what vegetables can be grown in an aquaponic system? Our article on What Vegetables Can Be Grown in Aquaponics? provides the answers you need for successful cultivation of vegetables with this soil-free gardening technique


Coffee grounds are an excellent fertilizer for your garden. They are also good for composting and making potting soil. 

You can use coffee grounds as mulch around your plants and shrubs to keep them healthy during the winter months when they need extra protection from frost or snow damage. 

Coffee grounds have been known to repel rabbits and mice while attracting ladybugs who will eat them if they come into contact with the coffee. 

If you are looking for other ways coffee can help in your yard then check out these posts: Top 10 Uses For Used Coffee Grounds And How To Make Your Own Organic Fertilizer From Scratch.

Get started on your soil-free gardening journey with our step-by-step guide on How to Make Your Own Aquaponics System. This guide covers everything from deciding between different types of systems, to selecting the right fish and plants for your aquaponic setup.

Further Reading

Here are some additional articles that you might find useful for further reading on the topic of gardening and soil health:

Are Banana Peels Good for Garden Soil?: This article explains the benefits of using banana peels as a natural fertilizer for plants.

Are Ashes Good for the Garden Soil? Explained: This article discusses the benefits of using wood ash as a soil amendment in the garden.

What Vegetables Can Be Grown in Aquaponics?: This article explains how to grow plants in a soil-less environment, which is relevant to the topic of using coffee grounds as a soil amendment.

What Fruits Can You Grow in Your Backyard? 11 Best: This article lists the best fruits to grow in your backyard, which is relevant to the broader topic of gardening and soil health.

Are Dead Leaves Good for Garden Soil?: This article discusses the benefits of using dead leaves as a natural fertilizer for plants.

Are Coffee Grounds Good for Your Garden?: This article explains the benefits and drawbacks of using coffee grounds as a soil amendment in the garden.

How to Use Coffee Grounds in the Garden: This article provides tips for using coffee grounds in the garden, including how to use them as a soil amendment, mulch, or compost.


What are some natural fertilizers for plants?

There are several natural fertilizers that can be used to provide essential nutrients to plants. Some examples include compost, coffee grounds, banana peels, wood ash, and dead leaves.

How do I improve the health of my garden soil?

There are several ways to improve the health of your garden soil, including adding organic matter such as compost or coffee grounds, using natural fertilizers, and practicing crop rotation to prevent nutrient depletion.

Can coffee grounds be used as a soil amendment?

Yes, coffee grounds can be used as a soil amendment to provide essential nutrients to plants. However, it is important to use them in moderation and mix them well with other organic matter to avoid nitrogen imbalance.

What fruits and vegetables can be grown in a soil-less environment?

Plants that can be grown in a soil-less environment include lettuce, herbs, strawberries, and tomatoes. Aquaponics is a popular method for growing these types of plants, which involves using fish waste as a source of nutrients for the plants.

How do I make my own compost?

To make your own compost, you can start by collecting organic waste such as fruit and vegetable scraps, eggshells, and coffee grounds. Mix the waste with dry materials such as leaves or straw and keep the pile moist. Turn the compost regularly to aerate it and speed up the decomposition process.