Homemade Plant Food: 7 Easy Natural Fertilizer Recipes (2024)

“Gardening costs a lot of money.” You’ve probably heard this myth before or might even believe it yourself. Sometime in the past few decades, people started believing they had to make a significant investment to buy all of the fertilizer and supplies needed to plan a garden.

Yet simple activities such as making your own homemade plant food and composting can cut your costs significantly.

It removes the need for store-bought fertilizer. And a natural fertilizer will ensure your plants stay healthy and uncontaminated by unnatural products commonly found in mass-produced fertilizer.

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Try Homemade Food for Plants

Before you try any fertilizers on your whole garden, test it on a few plants first. Every soil, plant, and garden has different needs and deficiencies, and as a result, will react better to different types of fertilizer.

By testing out your homemade plant food first, you will be able to find which one works best for your situation.

If one of your gardening goals is to avoid chemicals you're in the right place. Use these seven easy natural fertilizer recipes to make your own homemade plant food and give your backyard garden that extra boost.

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These seven natural fertilizers represent just some of the total amount of fertilizers you can make at home or find for free. Cost should never be an excuse not to garden, so start getting creative and use these recipes to make your own ultimate plant food.

And before I forget, if you're looking for inexpensive planters, try making your own DIY planters for indoors or outdoors with these fun upcycling ideas!

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Homemade Plant Food: 7 Easy Natural Fertilizer Recipes

Make homemade plant food with these seven easy natural fertilizer recipes using ingredients you already have on hand.

1. Seaweed Tea

Don’t be scared by the title, you can still make this fertilizer even if you don’t live near the ocean.

Here's a quick look at how to make seaweed tea.

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  1. Collect any “marine weeds” in your area, including freshwater seaweed.
  2. Check your state or local guidelines to make sure foraging for seaweed has been permitted in your area. Depending on protected species and lands, there may be different regulations in your area.
  3. Walk along the shoreline of a local lake, pond, or ocean, and look for washed-up seaweed on the shore.
  4. Rinse off the seaweed to remove any dirt, bugs, or salt (if you have an ocean nearby).
  5. Chop the seaweed then submerge it in a bucket with a few gallons of water, enough to steep the seaweed for a few weeks.
  6. As the seaweed breaks down, the water absorbs most of the nutrients. After 3 - 4 weeks of steeping, strain out the seaweed and use the tea mixed with 50% regular water for your plants.

2. Epsom Salts, Baking Powder, and Ammonia

By combining some inexpensive and common household products, you can make a natural fertilizer that gives your plants all of the nutrients they need. And this is a great solution to try if you're trying to save money off the grid.

Epsom salt contains high levels of magnesium and sulfur, which plants need to create healthy foliage and absorb nutrients from the soil.

Baking soda helps plants bloom and protects them from fungal disease, while ammonia contains nitrogen to assist in growing a healthy root system.

These three simple ingredients conveniently contain most of the nutrients needed to grow a healthy plant, and you most likely have them in your homestead kitchen or around the house. If not, they cost just a few dollars and can be found at most grocery or superstores.

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Here's a quick recipe for using Epsom salts, baking soda, and ammonia homemade fertilizer.

  1. Use an old 1-gallon plastic jug or watering can to mix the natural fertilizer.
  2. Add 1.5 tablespoons of Epsom salt, 1.5 teaspoons of baking soda, and just under half a teaspoon of ammonia.
  3. Once you’ve added these to your empty jug, fill up the rest of the container with water.
  4. Shake well to mix. Let sit for 15 minutes or until all the ingredients have dissolved.
  5. Apply to your vegetable garden or houseplants.

3. Banana Peels

What makes bananas so healthy for us to eat? Potassium.

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Well, it turns out plants need potassium to grow just as much as we do. If you’re anything like our family, you probably go through quite a few bananas every week.

Save your banana peels (if you don’t already compost) and bury them in a hole a few inches below the surface next to plants like rose bushes or other plants that require high levels of potassium. You can even do this with overripe bananas if you don’t feel like making banana bread!

If you want to take it a step further, steep the bananas in water similar to the seaweed tea process. Once the mixture has steeped long enough, use the water AND the peels to add some natural fertilizer to your garden.

4. Animal Manure

The original and most effective natural fertilizer available: animal manure. Our ancestors have been using animal manure as a homemade (or animal made) plant food ever since humans began farming.

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It obviously comes with no cost, other than the cost of owning and feeding animals. But you would be paying for those costs anyway, people don’t own animals just to make compost!

Whether you raise chickens, cows, turkeys, rabbits, or other homesteading livestock, their manure will have awesome benefits for your garden.

Keep in mind, you need to dry and age the manure for about 6 months before adding it to your garden. Also, don’t use the waste from any household pets or meat-eating animals, as these may contain harmful parasites and bacteria.

To learn more about how to properly compost animal manure, check out North Dakota State’s free guide.

5. Aquarium Water

If you have an aquarium or fishbowl that you clean every few weeks, save the water to use in your garden. As you know, aquarium water will get cloudy, smelly, and dirty over time due to fish waste.

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This same waste is what makes aquarium water so good for your plants, adding natural fertilizer and nutrients to your soil. The aquarium water also has a high level of nitrogen, one of the most vital nutrients for healthy plants.

Before you try any of these fertilizers on your whole garden, test it on a few plants first. Every soil, plant, and garden has different needs and deficiencies, and as a result, will react better to different types of fertilizer. By testing out your homemade plant food first, you will be able to find which one works best for your situation.

6. Compost Tea

We've listed compost tea separately from regular compost because it can be used on its own, and gives apartment homesteaders an easy option if you have limited space. Here's how to make compost tea.

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  1. Simply keep a glass jar on your counter, or in a closet or cupboard.
  2. Fill the jar about ⅓ - ½ of the way with clean water.
  3. Whenever you have food scraps, like eggshells, coffee grounds, tea bags, or vegetable trimmings, crush them up and add them to the jar.
  4. Add more water as necessary, just make sure all the compost is covered.
  5. Once you’ve almost filled the jar, top it up with water and shake once daily for a week.
  6. Let it sit away from direct sunlight, and don’t put a tight-fitting lid on the jar. You don’t want it to explode by accident if fermentation occurs and you forget about it. If you see the liquid begin to ferment, add it to your garden before it ferments any further.

7. Homemade Compost

This one seems like a no-brainer, but you would be surprised how many people don’t bother composting.

Organic matter contains incredibly high amounts of nitrogen, potassium, and other essential nutrients needed in your garden. Save these nutrients rather than throwing them out. When you have food scraps or any organic waste, add it to your compost pile.

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The nutrients found in expensive store-bought fertilizer will be similar (if not less) than the levels of nutrients in your own compost, so why would you pay for something you already have at home?

Make composting a family affair - learn more about composting with kids and get started today.

More Resources for Homemade Plant Food & Easy Natural Fertilizers

  1. University of Massachusetts: Fertilizing Flower Gardens Avoid Too Much Phosphorus
  2. North Dakota State: Composting Animal Manures Guide
  3. Michigan State University: Storing Manure
  4. Oregon State University: Here's the scoop on chemical and organic fertilizers

Looking for more information on gardening for beginners? Some of our most popular posts are about gardening.

When we moved off the grid to Canada's subarctic, we had to learn how to garden in a cold climate. And in an area with 20+ hours of sunlight each summer!

Between indoor gardening, using cold frames to extend our gardening season, and learning about permaculture, we're slowly growing more food.

More gardening posts you might like:

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Homemade Plant Food: 7 Easy Natural Fertilizer Recipes (2024)

FAQs

How to make homemade plant fertilizer? ›

To make compost, take all your scraps (like eggshells, fruit peels, and coffee grounds) and put them into a pile with leaves, sticks, and other organic debris. Overtime, the microbes will break the pile down and turn it into fine fertilizer, which you can mix into your soil.

How do you make the best natural 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.

How to make homemade Miracle-Gro? ›

  1. Fill a large container with 1 gallon of water.
  2. Add 1 tablespoon of baking soda and stir until it dissolves completely.
  3. Add 1 tablespoon of Epsom salt and stir until it dissolves completely.
  4. Add 1/2 teaspoon of household ammonia and go until it is well mixed.
  5. Your homemade Miracle Grow is now ready to use.
Mar 5, 2023

Is Epsom salt, baking soda, and ammonia good for plants? ›

Epsom Salt Mix

The reason is that it contains a good amount of magnesium. Next, you'll need baking soda to act as an anti-fungal. Household ammonia is the third and last ingredient. Because it's household ammonia, it contains the right amount of nitrogen plants need.

What are the 3 main ingredients in plant fertilizer? ›

Look for the three-number formula on every bag of fertilizer. Just remember NPK, which stands for nitrogen (N), phosphorus (P), and potassium (K). The formula represents the ratio of these three ingredients always in that order.

How is baking soda good for plants? ›

Baking soda's supposed anti-fungal properties have been spread around for many years as a natural home remedy to treat fungal infections, including black spot, powdery mildew, and a multitude of other fungi. When applied to plant leaves and stems, baking soda does slow or stop the growth of fungi.

What is the richest natural fertilizer? ›

Worm Castings are the richest natural fertilizer known to humans. That's right: as little as a tablespoon of pure worm castings provides enough organic plant nutrients to feed a 6" potted plant for more than two months. Worm castings stimulate plant growth more than any other natural product on the market.

Is vinegar good for plants? ›

Vinegar has been recommended for use to up the pH levels in your soil. Apparently not so. The effects are temporary and require large amounts of vinegar in the garden before anything noteworthy occurs. The last, but most commonly suggested use for vinegar in the garden is as an herbicide.

What does Epsom salt do for plants? ›

Aside from the anecdotal evidence about human benefits, Epsom salt does seem to help plants. Generations of gardeners have said it helps their plants grow bushier, produce more flowers and have better color. It's also said to help seeds germinate and repel slugs and other garden pests.

How do you make homemade fertilizer with Epsom salt? ›

Simply fill your tank sprayer (commonly available at gardening and home improvement stores) with one tablespoon of Ultra Epsom Salt per gallon of water. Spray your garden after the initial planting, then again after a month or so, and lastly when the vegetables begin to mature.

What is a good natural plant food? ›

Household kitchen wastes like eggshells, rice water, coffee, potato water, and banana peels are the perfect eco-friendly and affordable way to feed your indoor houseplants! Here are my top five organic fertilizers and how to use them in your indoor plant jungle and garden!

What is a substitute for Miracle Grow plant food? ›

Your neighbours could use liquid kelp or fish emulsion. They are liquid products that are diluted in water and then used to water the plants – ideal for containers. Fish emulsion has a bit of a smell when you're mixing it up, but when it is absorbed by the soil, you don't smell anything.

How to make your own plant food? ›

Coffee Grounds, Cinnamon and Club Soda

The combination of this homemade plant food contains NPK (plus other minerals) and takes no time to put together. You'll need four to six tablespoons of coffee grounds, one teaspoon of cinnamon and one cup of club soda.

What does vinegar and salt do to plants? ›

The vinegar and salt mix is a contact weed killer, meaning that it only kills the part of the plants that it touches. Contrary to some myths that I've read, a foliar spray absolutely does not kill roots. Most weeds sprout back from the roots within a few short weeks of being sprayed with vinegar.

What happens when you mix baking soda and Epsom salt? ›

Baking soda has cleansing and detoxifying properties that may help to purify your body and boost immunity. It can be combined with Epsom salt, sea salt, and ground ginger to make a detox bath. You can also add essential oils and other natural ingredients of your choice.

What plants benefit from coffee grounds? ›

Acidic-loving plants such as azaleas, blueberries, hydrangeas, rhododendrons, and roses will benefit from a sprinkling of coffee grounds around the base of plants. Vegetable crops that may benefit from coffee grounds include carrots, cucumbers, peppers, potatoes, and radishes.

How to boost plant growth naturally? ›

Take care of the basics: watering, light, humidity and fertiliser. If you have these details under control, you are a good part of the way to ensuring that your little plant stretches its roots and branches until it reaches for the sky.

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