Coffee Grounds as Fertilizer for your Veggies

Fertilizer can be a big expense, but it doesn't have to be. Used coffee grounds and eggshells are free and provide much-needed nutrients to the soil. By using these items in the garden, not only are plants getting the nourishment they need, but these items will not be taking up space in a landfill. Storing coffee grounds and eggshells in a countertop composter, plastic container or plastic bag will prevent them from attracting bugs while you collect enough to use in the garden. It is important while collecting eggshells and coffee grounds that the soil remains dry and not humid to prevent unnecessary molds. Make sure that what you collect does not rot in the bags or containers. I like to start collecting coffee grounds in autumn and winter. It's actually not really important when you start to collect coffee grounds, autumn and winter is just my personal preference. The quality of the coffee is not really important as all coffee has a fertilizing effect. I would go for the cheap coffee grounds if you intend to spend money on fertilizers.

Direct Application of Coffee Grounds

Coffee grounds are an excellent free source of nitrogen, an element all plants need. A common misconception about coffee grounds as a fertilizer is that it may cause problems because of high acidity. But coffee grounds are close to neutral, with a pH between 6.5 and 6.8, making them a good choice for all plants. Each type of plant will prefer a different amount of coffee, so start small by adding 1 tablespoon of coffee grounds around each plant, lightly working it into the soil once a week. Observe how your plants react and add more each week until they stop showing signs of improvement.

The classic compost soil termometer

Composted Coffee Grounds

Composted coffee grounds are probably the best, as they provide a good source of nitrogen and mildly acidic soil. However, if you don't want to get involved in composting, I think you'll be fine by putting coffee grounds directly in the soil and mixing it slightly. It probably might take a little longer to break down on its own, but it'll be ok. Coffee "tea" is also one way of doing it, but I think it's more of a diluted one-time fertilizer drink for the plant.

You don't get the same benefit as having coffee grounds in the soil, which dissolves a little bit of nutrients each day and encourages the growth of microbes. Coffee grounds are great for plants that like slightly acidic soil like tomatoes and blueberries. Coffee grounds can be used in compost like other kitchen scraps. Paper filters can be composted as well, making coffee composting as easy as throwing it in the garbage. Combine equal parts grounds, grass clippings and dry leaves to create simple and effective compost. Combine all ingredients and turn the compost over with a pitchfork once a week. Depending on the outdoor temperature, the compost should be ready to add to the garden in a few weeks.

Eggshell Tea

Eggshells are rich in calcium. Without the proper amount of calcium in the soil, plants may produce deformed blooms. You may be buying lime to prevent this problem, but eggshells are just as effective. Store eggshells in a large container of water, adding more shells as you go. Let the mixture steep for at least a few days or up to several weeks. Combine 1 cup of eggshell tea with 1 gallon of water and thoroughly water plants. Up to 1 gallon of the mixture can be used per plant. The added calcium will give plants a much-needed boost through production season.

Powdered Eggshells

Powdered eggshells can be added around the base of plants as a slow-release fertilizer. This process will benefit plants all season, and you can add it throughout the growing season. Allow eggshells to dry, then pulse in a blender until they become a fine powder. Sprinkle around the base of each plant.

Coffee grounds are versatile and can be repurposed in various ways. Here are some creative and useful things you can do with coffee grounds:

Fertilizer: Coffee grounds are rich in nitrogen, which makes them an excellent addition to your compost pile or garden. They can help improve soil structure and provide nutrients to plants.


Natural Pest Repellent: Coffee grounds can help deter pests like ants and slugs. Sprinkle them around the base of plants or near entry points to keep these pests away.


Odor Absorber: Coffee grounds are good at absorbing and neutralizing odors. Place a container of dried coffee grounds in your refrigerator or freezer to help eliminate unwanted smells.


Scouring Agent: Coffee grounds can be used as an abrasive scrub for cleaning pots, pans, and surfaces. They can help remove stubborn food residues and stains.


Exfoliating Scrub: Coffee grounds can be mixed with a little coconut oil or yogurt to create a natural exfoliating scrub for your skin. They help remove dead skin cells and leave your skin feeling smooth.


Hair Treatment: Massaging coffee grounds into your scalp can help exfoliate and promote healthy hair. They can also add shine and texture to your hair.


Natural Dye: Coffee grounds can be used as a natural dye for paper, fabric, or even Easter eggs. Simply soak the material in coffee and let it dry.


Repel Insects in the Garden: Coffee grounds can act as a barrier to deter pests like snails and cats from disturbing your garden. Sprinkle them around plants to create a protective barrier.


Homemade Candles: Incorporate coffee grounds into homemade candles for a textured, rustic appearance.


Arts and Crafts: Coffee grounds can be used in various art and craft projects to create unique textures and designs.


Deicing Walkways: In cold weather, coffee grounds can be used to add traction to icy walkways, making them safer to walk on.


Flavor Enhancer for Cooking: Coffee grounds can be added to savory dishes, such as chili or barbecue rubs, to impart a rich, smoky flavor.


Natural Cleaning Scrub: Use coffee grounds as a non-toxic scrub for cleaning dishes, kitchen sinks, or even greasy hands.


Homemade Candles: Mix coffee grounds into homemade candles to create a rustic, textured appearance.


Craft Projects: Coffee grounds can be used in various arts and crafts, such as creating textured paintings or adding a weathered look to paper.

Remember that the coffee grounds should be dried before using them for most of these purposes. Wet coffee grounds can develop mold. Additionally, if you are repurposing coffee grounds, make sure they are free from any additives like creamer or sweeteners.