Homemade Plant Food Recipe

This post may contain affiliate links. If you purchase through links on my site, I may earn a commission at no cost to you. For more information, please see my disclosure policy.

I have a homemade plant food recipe you can make at home to avoid the cost of buying it.

this Idea

Every little bit helps, right?

I found this homemade plant food recipe on the Bob Vila website. It’s just a few inexpensive ingredients. You may already have some or all of these things.

Epsom salt, baking soda, household ammonia, and water are all you need to make this homemade plant food.

Instructions:

• Measure 1 ½ tablespoons of Epsom salt into a clean gallon jug. A rinsed-out plastic milk jug with its lid makes an excellent container for this homemade plant food.
• Add 1 ½ teaspoons of baking soda to the jug.
• Measure a scant ½ teaspoon of household ammonia into the jug.

Here’s what these simple ingredients in this homemade plant food recipe do:

Household Plain Ammonia: Ammonia contains nitrogen and hydrogen, a powerful plant nutrient when natural bacteria convert the nitrogen to nitrate. This cannot be substituted. Don’t use ammonia with any additives.

Epsom Salt: This addition provides magnesium and sulfur to the plants, enhancing the soil’s nutrient content.

Baking Soda: Its primary purpose is to eliminate mildew on your plants and act as a fungicide.

Homemade Plant Fertilizer Benefits

Homemade plant food is an appealing option for gardeners who want to care for their plants naturally, save a little money, and make better use of everyday household materials.

Whether you’re growing houseplants on a windowsill, flowers in porch containers, or herbs in a small garden, a homemade plant food recipe can fit into your gardening routine.

1. It Can Save Money

One of the biggest reasons to try homemade plant food is the potential to reduce gardening expenses. Commercial fertilizers can add up, especially when you’re caring for many containers or houseplants.

Depending on the ingredients you already have, you may be able to use compost, finished leaf mold, or other suitable organic materials instead of buying additional products.

2. It Makes Use of Household Waste

Gardening offers a great opportunity to reuse materials that might otherwise be thrown away. You can compost fruit and vegetable scraps, fallen leaves, and other organic materials into a useful soil amendment.

Instead of sending those scraps to the trash, you can give them another purpose in the garden.

A helpful tip: Compost kitchen scraps before adding them to your plants. Putting raw food scraps directly into pots can attract pests, cause unpleasant odors, and create other problems.

3. It Can Improve Soil Health

Homemade compost does more than supply some nutrients. It can improve soil structure, help the soil retain moisture, and support beneficial organisms.

This can be especially helpful in container gardening, where plants depend on a relatively small amount of growing medium.

Healthy soil gives roots a better environment in which to grow, helping plants make the most of the water and nutrients available to them.

4. It Encourages a More Natural Gardening Routine

For gardeners who enjoy a more environmentally conscious lifestyle, using compost and organic materials can be a satisfying part of plant care.

Turning organic matter into the soil and watching flowers, herbs, and vegetables grow is rewarding.

It also encourages you to pay closer attention to your plants, noticing changes in leaf color, new growth, soil moisture, and flowering.

5. It Can Reduce Waste

Composting appropriate household scraps and garden debris can help divert organic waste from landfills. You can then use finished compost to enrich garden soil.

It’s a small step toward a more resourceful way to garden, especially if you grow plants in containers or maintain a small backyard garden.

6. You Can Make Plant Care More Personal

Every garden has different needs. Some plants thrive in nutrient-rich soil, while others prefer leaner conditions.

Making your own compost or using carefully chosen organic soil amendments allows you to take a more hands-on approach to your garden. You can observe how your plants respond and adjust your care accordingly.

However, a homemade plant food recipe isn’t automatically better than commercial fertilizer. Its nutrient content can vary, and some plants need specific nutrients in measured amounts.

What Homemade Plant Food Can You Use?

Finished compost

Finished compost is one of the most reliable homemade fertilizer options. It adds organic matter and provides modest amounts of nutrients while improving soil structure.

Eggshells

Eggshells contain calcium, but they break down slowly. They aren’t a quick fix for calcium deficiencies. Most plants don’t need extra calcium when grown in a suitable potting mix.

Used coffee grounds

You can compost coffee grounds with other organic materials. Avoid adding thick layers directly to pots, as they may affect moisture movement and plant growth.

Composted leaves or leaf mold

These are especially useful for improving soil structure and moisture retention, although leaf mold generally provides fewer nutrients than finished compost.

A Few Things to Remember

• Homemade plant food may not provide all the nutrients your plants need.
• Avoid adding raw kitchen scraps, meat, dairy products, or oily foods directly to plant pots.
• Don’t assume that banana-peel water, eggshell water, or coffee grounds provide a balanced fertilizer.
• Use a fertilizer formulated for your particular plants when they need nutrients that homemade materials cannot reliably supply.
• For houseplants and container flowers, use a quality potting mix and avoid overfertilizing.

Pros & Cons of Using Homemade Plant Food Recipes

• Pros:
  • Cost-effective: Uses items you already throw away, like coffee grounds, eggshells, banana peels, or weed tea.
  • Improves soil: Adds organic matter and supports beneficial soil microbes.
  • Eco-friendly: Reduces household food waste going to landfills.

• Cons:
  • Guesswork on nutrients: You can’t easily know the exact balance of nitrogen, phosphorus, and potassium. This makes it hard to fix a specific nutrient deficiency (like poor flowering).
  • Risk of pest or odor issues: Improperly fermented liquids or unburied food scraps can attract pests, smell bad, or burn roots if too strong.

When to Use Which?

• Use store-bought if you need a quick fix for a sick plant, a guaranteed balanced feed, or exact nutrient ratios for heavy-producing vegetables.
• Use homemade for general garden maintenance, building healthy soil over time, or feeding low-maintenance houseplants and ornamentals

Feeding Your Plants Naturally

A homemade plant food recipe can make gardening feel more connected to the natural cycle of growing, using, and returning organic materials to the earth.

It can save money, reduce waste, and improve your soil when you choose the right materials.

The best approach is to think of homemade plant food as one part of good plant care rather than a magic solution.

With healthy soil, appropriate watering, sufficient light, and the right nutrients, your plants have a much better chance of flourishing.