Do Ferns Like Coffee Grounds



There is a common query amongst gardeners regarding ferns and their compatibility with coffee grounds. While coffee grounds are a preferred soil amendment for numerous plants, the question remains whether ferns can benefit from them too. Fortunately, the answer is affirmative! Coffee grounds can prove to be an effective addition to the soil of ferns as they offer vital nutrients and help keep the soil damp. This article will delve into the advantages of using coffee grounds for ferns and provide guidelines on using them suitably.

How to Use Coffee Grounds to Fertilize Ferns

Ferns are a popular houseplant and can be a great addition to any home. However, like other plants, they must be fertilized to stay healthy and thrive. Coffee grounds are an excellent source of nutrients for ferns, and they can be used to fertilize them in a few simple steps.

First, you will need to collect the coffee grounds. You can save them from your coffee-making routine or ask a local coffee shop for their used grounds. Once you have the grounds, spread them around the base of the fern, covering the entire root system. The grounds should be spread thin, about one-quarter of an inch thick.

Next, water the fern thoroughly. This will help the coffee grounds to break down and release their nutrients into the soil. You should water the fern every two weeks or so, depending on the size of the plant and the amount of sunlight it receives.

Finally, you can add a layer of mulch over the coffee grounds. This will help to keep the grounds in place and prevent them from washing away. It will also help to retain moisture in the soil, which is important for the health of the fern.

Using coffee grounds to fertilize ferns is an easy and cost-effective way to keep your plants healthy and thriving. With just a few simple steps, you can give your ferns the nutrients they need to stay healthy and beautiful.

The Benefits of Coffee Grounds for Ferns

Ferns are a popular choice for indoor plants, but they need proper nourishment to thrive. Coffee grounds make for an effective fertilizer for ferns, and here’s how to use them:

Collect used coffee grounds and spread them uniformly over the entire root system. Ensure the layer is thin, not more than a quarter of an inch thick. Water the fern thoroughly to aid in decomposition and release nutrients into the soil. This type of plant needs to be watered every two weeks or on an as-needed basis based on light exposure and plant size. Finally, you can use a layer of mulch over the applied coffee grounds. This will help keep the coffee grounds in place and retain moisture, which benefits the fern’s health.

By following these simple steps, you can easily provide the necessary nourishment to help your ferns grow healthy and beautiful. Using coffee grounds is an economical and effortless method of keeping your plants thriving.

The Best Types of Coffee Grounds for Ferns

Do Ferns Like Coffee Grounds

Ferns make for lovely houseplants and can add a touch of green to any living space. However, they need some extra care when it comes to their soil. Coffee grounds are an excellent and natural way to add nutrients to your ferns’ soil and enhance their drainage. Some types of coffee grounds that would be ideal for ferns are:

  1. Fresh Coffee Grounds: These contain nitrogen and essential nutrients that are great for ferns. They also serve to improve soil aeration and drainage. However, fresh coffee grounds are acidic, so mixing them with other soil components is best to balance the pH.

  2. Composted Coffee Grounds: These are less acidic than fresh grounds and release nutrients over time, making them a great choice for ferns. They also improve soil aeration and drainage.

  3. Used Coffee Filters: These are full of nitrogen and essential nutrients, which can benefit fern growth. They also help to improve soil aeration and drainage.

It’s important not to go overboard when adding coffee grounds to your ferns’ soil. Too much coffee grounds can make the soil too acidic, which may harm your ferns. Be sure to mix the coffee grounds with other soil components to balance out the pH. Following these tips can give your fern the care it needs to thrive.

How to Make a Coffee Ground Compost for Ferns

Composting using coffee grounds is a fantastic way to nourish your ferns with the nutrients they require to flourish. Coffee grounds contain nitrogen, which helps foster healthy growth and dense foliage in ferns. Follow these tips to create compost using coffee grounds: 

  1. Approach your nearby coffee shop or cafe for used coffee grounds.
  2. Put the coffee grounds in a compost bin or pile and ensure they are spread out equally. 
  3. Add other organic materials such as leaves, grass clippings, and vegetable scraps. 
  4. Top the compost pile with a layer of soil. This will keep the pile damp and deliver extra nutrients. 
  5. Water the compost pile frequently, taking care not to overdo it. 
  6. Turn the compost pile every few weeks to instill air circulation and quicken decomposition. 
  7. When the compost is ready, spread it at the base of your ferns and see them come to life with healthy growth. 

By following these simple steps, you can effortlessly create nutrient-rich compost for your ferns. Coffee grounds can provide ferns with an ideal nitrogen source and other essentials for optimal growth. With regular watering and turning, your compost will be ready for use in no time.

How to Make a Coffee Ground Tea for Ferns

Using coffee grounds, and making a fertilizer tea for ferns is a simple and effective method to enhance their growth. To create this tea, steep coffee grounds in water and utilize the resulting liquid as a fertilizer. Here’s how to make coffee ground tea for ferns:

  • First, get the necessary equipment, such as a bucket or big pot to steep the grounds, a strainer to separate the grounds from the liquid, coffee grounds, and water.
  • Next, add one cup of coffee grounds to the container.
  • Pour two gallons of water over the grounds and mix well.
  • Leave the mixture to infuse for 24 hours.
  • After 24 hours, strain the mixture through the strainer.
  • Then, pour the liquid into a container of your choice and use it to water the ferns.
  • Lastly, discard the used coffee grounds.

By following these steps, you can easily make a fertilizer-rich coffee ground tea that will help your ferns grow and flourish.

The Pros and Cons of Using Coffee Grounds for Ferns

Ferns can be fertilized using coffee grounds, but it is important to consider both the advantages and disadvantages before doing so.


  • Ground coffee is rich in nitrogen, which is essential for ferns’ healthy growth.
  • Other beneficial nutrients, such as phosphorus, potassium, and magnesium, are also present in coffee grounds.
  • Coffee grounds can enhance soil structure and drainage by providing organic matter.
  • The caffeine found in coffee grounds can repel pests like slugs and snails.


  • Coffee grounds are acidic and should be used moderately to prevent root damage and growth inhibition.
  • Wet coffee grounds may cause mold and mildew growth, requiring proper drying before use.
  • Animals such as cats, dogs, and rodents may be attracted to coffee grounds, posing a risk to pets and wildlife.

In summary, coffee grounds can be a suitable fertilizer for ferns with proper precautions, such as limited use and thorough drying.

How to Care for Ferns with Coffee Grounds

Ferns can be kept healthy and vibrant by using coffee grounds as a source of nutrients. Here’s how to care for your ferns with coffee grounds:

  1. Use fresh coffee grounds to avoid introducing harmful bacteria and molds to your ferns.
  2. Mix the coffee grounds into the soil surrounding the ferns to ensure the nutrients reach the roots.
  3. Be cautious not to add too much coffee grounds, which can harm your ferns.
  4. Water your ferns regularly, even though coffee grounds can help retain moisture in the soil.
  5. Keep track of your ferns to ensure they aren’t receiving too little or too much coffee grounds.

Following these tips will give your ferns the nutrients they need to continue looking healthy and radiant.


Ferns and coffee grounds don’t work well together. The high acidity of coffee grounds harms ferns and can hinder their growth or cause them to perish. For optimum growth, avoiding using coffee grounds as a fertilizer for ferns and opt for a neutral alternative such as balanced fertilizer or compost is recommended.

As an author and indoor plants enthusiast, I have always been fascinated by the natural world and the beauty of plant life. Growing up, I spent much of my time outdoors, exploring the forests and gardens in my hometown and learning about the various plant species that inhabit them.

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