Use These 7 Homemade Fertilizer Recipes in Your Garden (2024)

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Erin Huffstetler

Erin Huffstetler is a frugal living expert who has been writing for over 10 years about easy ways to save money at home.

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Updated on 07/05/22

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Amanda Rose Newton

Use These 7 Homemade Fertilizer Recipes in Your Garden (1)

Amanda Rose Newton is a pest specialist and horticulture expert, reviewing pest control and gardening content for The Spruce's Cleaning and Gardening Review Board. Her passion for pest control and sustainable gardening allows her to review plant and pest content for best practices and accuracy. She is a board-certified entomologist and volunteers for USAIDs Farmer to Farmer program. She is a professor of Horticulture, an Education Specialist, and a pest specialist.

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Project Overview

  • Working Time:10 - 15 mins
  • Total Time:10 - 15 mins
  • Skill Level:Beginner
  • Estimated Cost:$0 to $5

Want to do right by your plants but don't want to spend too much money on fertilizer? Here are sevenhomemade fertilizer recipes for you to put to the test. They're made from ingredients you probably already have on hand, including some things you may be in the habit of throwing away. Read through the instructions carefully to determine if a particular fertilizer is right for your needs; for instance, some homemade fertilizers shouldn't be used on acidic soil, while others shouldn't be used on alkaline soil.

Keep in mind that you will not need all the ingredients in the supply list or all the items in the tool list. Choose your ideal homemade fertilizer and read those instructions to determine which of these items you'll need to create your plant food.

What You'll Need

Equipment / Tools

  • Watering can
  • Cookie sheet
  • Blender
  • Compost bin

Materials

  • Water
  • Epsom salt
  • Used coffee grounds
  • Newspaper
  • Eggshells
  • White vinegar
  • Water from a fish tank
  • Fireplace ashes
  • Fruit and vegetable scraps

Instructions

  1. Make Epsom Salt Fertilizer

    Dissolve 1 tablespoon of Epsom salt in 1 gallon of water. Shake the solution thoroughly. Use the solution to water your plants. Water them with this solution once per month during the growing season.

    It works because Epsom salt is made up of magnesium and sulfate, both vital plant nutrients. Some magnesium-loving plants to try it on include houseplants, roses, peppers, tomatoes, and potatoes. Like any fertilizer, a little goes a long way! Be sure to use the correct dose for plant size.

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  2. Try Coffee Ground Fertilizer

    Line a cookie sheet with newspaper. Spread your used coffee grounds out on the sheet, and allow them to dry completely. Sprinkle the grounds around the base of your acid-loving plants.

    This works because coffee grounds are rich in nitrogen, magnesium, and potassium—all-important plant nutrients. They're also naturally acidic, so they can help you boost the acidity of the soil. Azaleas, roses, rhododendrons, and blueberries are just some of the plants that will benefit from this treatment.

    Tip

    Be careful not to overdo it with the grounds. Even acid-loving plants can get too much acid.

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  3. Use Eggshells as Fertilizer

    Save your eggs shells and allow them to air dry. Place the dried shells in a blender and pulse until they're powdery-fine. Sprinkle the shell powder around the plants in your garden.

    This works well because eggshells are made up almost entirely of calcium carbonate—the main ingredient in agricultural lime. Use this in place of lime in the garden.

    Use These 7 Homemade Fertilizer Recipes in Your Garden (5)

  4. Create Vinegar Fertilizer

    Combine 1 tablespoon of white vinegar and water. Use the solution to water your plants. Repeat every three months.

    This works because the acetic acid in vinegar works to increase the acidity of the soil—just the thing for acid-loving plants. Use this in place of houseplant fertilizer, rose plant food, and soil acidifiers.

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    Tip

    Never use straight vinegar to fertilize your plants. Undiluted vinegar is an herbicide.

  5. Use Fish Tank Water

    Simply save the water from your fish tank the next time you clean the tank. Use it generously and often to water any plants.

    This works because used fish tank water is full of nitrogen and other nutrients that plants need to thrive. This can be used in place of any other type of fertilizer.

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  6. Employ Fireplace Ashes

    Collect fireplace ashes after they cool down. Sprinkle cool (never hot) fireplace ash over your garden beds and work it into the soil.

    Fireplace ash is rich in potassium and calcium carbonate. If your soil is too acidic, it'll help to balance out the pH, so your plants are better able to absorb the nutrients that are present in the soil. Use it in place of garden lime.

    Tip

    Fireplace ash should not be used if your soil is alkaline. It also shouldn't be used around acid-loving plants, unless you're trying to turn hydrangeas pink.

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  7. Make Your Own Compost

    Save your fruit and vegetable scraps, newspapers, grass clippings, and other compostable materials. Use them to start a compost bin or pile. Add a bit of water from time to time, and turn your pile to speed up the composting process.

    When everything has broken down into a dark, rich soil, it's time to spread it in your garden.

    Compost is loaded with nutrients and microorganisms that are good for your garden. It is a top-notch organic addition to your soil that can be used anywhere in the garden.

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Use These 7 Homemade Fertilizer Recipes in Your Garden (2024)

FAQs

How do you make homemade garden fertilizer? ›

Quick how to: Add banana peels, coffee grounds, vegetable scraps, tea bags, and any other organic waste to a large, glass jar using a 1:10 ratio of compost to water. Mix in fresh or dried seaweed as an added nutritional bonus. Seal and shake the mixture once a day to agitate the tea.

What is the best fertilizer for your garden? ›

Most gardeners should use a complete fertilizer with twice as much phosphorus as nitrogen or potassium. An example would be 10-20-10 or 12-24-12. These fertilizers usually are easy to find. Some soils contain enough potassium for good plant growth and don't need more.

Is coffee grounds and cinnamon good for plants? ›

You'll need four to six tablespoons of coffee grounds, one teaspoon of cinnamon and one cup of club soda. Simply mix the ingredients until well combined and use on a bi-weekly basis for a slow release of nutrients without causing the soil's acidity levels to rise too much.

Is homemade fertilizer good for plants? ›

Fertilizers provide plants with the necessary nutrients required for them to grow. Homemade fertilizer should contain nitrogen (N), phosphorus (P) and potassium (K). Lack of essential nutrients can have a negative effect on the growth of plants.

What is the best homemade fertilizer? ›

Compost. Compost reigns supreme in the world of natural fertilizers. This nutrient-rich material is created by the decomposition of organic matter like food scraps, yard waste, and leaves.

What is the best homemade plant fertilizer? ›

Five Affordable and Easy DIY Organic Fertilizers You Can Find Right In Your Home
  • Eggshells. Save your eggshells people, I cannot stress this enough. ...
  • Rice Water. If you aren't washing your rice before you cook it, you should really try it...and then save the water for your house plants! ...
  • Coffee. ...
  • Potato Water. ...
  • Banana Peels.
Aug 3, 2023

How to fertilize garden cheap? ›

You can use kitchen waste to make compost. Combine scraps with grass clippings and leaves, and you've got one rich source of natural fertilizers. Coffee grounds, eggshells and fruit and vegetable peelings are great choices for composting.

What is the best fertilizer mix for a vegetable garden? ›

A common recommendation for vegetables is to apply 1 pound of a 10-10-10 fertilizer or 2 pounds of a 5-10-5 (or 5-10-10) fertilizer per 100 feet of row.

How can I fertilize my garden fast? ›

You can broadcast dry fertilizer (1 pound for each 100 square feet of garden or 100 feet of row) over the entire garden plot before planting. Then after planting, side-dress along the plant rows. The fertilizer should be applied 2–3 inches to the side of, and 1–2 inches below, the seed level or plant row.

Which plants Cannot use coffee grounds? ›

Some plants do not benefit from adding coffee grounds to their soil. Plants like lilacs and lavender prefer alkaline soil, so the slight acidity will harm them. The caffeine in coffee grounds can also harm some herbs and geraniums.

Can I use leftover coffee to water plants? ›

It's okay to water plants with leftover coffee or to add coffee grounds to the compost pile but learning when and why to use coffee in the garden will protect your plants. Only use black, unflavored coffee with this method to offer plants a source of nitrogen which can fertilize certain indoor and outdoor plants.

Can I just sprinkle coffee grounds on plants? ›

To use coffee grounds as fertilizer, simply sprinkle them onto the soil surrounding your plants. Summary Coffee grounds make great fertilizer because they contain several key nutrients required for plant growth. They can also help attract worms and decrease the concentrations of heavy metals in the soil.

Is baking soda good for your plants? ›

When applied to plant leaves and stems, baking soda does slow or stop the growth of fungi. However, the benefits are fleeting at best. Studies have shown that while baking soda impacts the growth of fungal spores, the spores and actively growing fungi are not killed.

Is Vinegar good for plants? ›

Though vinegar can be fatal to many common plants, others, like rhododendrons, hydrangeas and gardenias, thrive on acidity which makes a bit of vinegar the best pick-me-up. Combine one cup of plain white vinegar with a gallon of water and use the next time you water these plants to see some amazing results.

What is the best homemade fertilizer for tomatoes? ›

Some of the most popular materials used in making homemade fertilizer for tomatoes are:
  • Wood ashes (source of potassium)
  • Kelp meal (source of potassium)
  • Chopped banana peels (natural potassium source)
  • Epsom salt (rich in magnesium)
  • Water (for liquid tomato fertilizers)
Jan 27, 2024

How do you fertilize garden soil naturally? ›

Simply collect yard waste and kitchen scraps and mix them with leaves, grass clippings, and other organic matter. Over time, this mixture will decompose into nutrient-rich compost that you can use to amend your garden soil. Mulching: Mulching is another great way to add organic matter and nutrients to your garden.

Can you make your own fertilizer for vegetables? ›

Homemade fertilizers, such as compost, well-rotted manure, or compost tea, can be effective in providing essential nutrients to your plants. Just ensure that your homemade fertilizer is well-balanced and not too concentrated, as excessive nutrients can harm your plants.

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