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Why You Should Use Fermented Plant Extracts in Your Garden

  • Writer: Steve Gayton
    Steve Gayton
  • Aug 21
  • 4 min read

Why You Should Use Fermented Plant Extracts in Your Garden: Proven Benefits & Tips

If you’re passionate about gardening and looking for a natural, eco-friendly way to boost plant health, you’ve probably heard whispers about fermented plant extracts (FPEs). But what exactly are they, and why should you consider using them? In this article, we’ll explore why you should use fermented plant extracts in your garden, how to make them at home, and how they can transform your soil, plants, and overall gardening experience.


Introduction to Fermented Plant Extracts


What Are Fermented Plant Extracts?

Fermented plant extracts are liquid fertilizers made by fermenting plant materials—such as weeds, herbs, or kitchen scraps—with beneficial microorganisms. This process releases nutrients, enzymes, and bioactive compounds that are easily absorbed by plan and other microorganisms.


The Science Behind Fermentation in Gardening

During fermentation, microbes break down organic matter into simpler compounds, making nutrients more bioavailable. This also increases beneficial microbial activity in the soil, which supports healthier root systems.


Common Plants Used for Fermentation

  • Nettle – rich in nitrogen.

  • Comfrey – high in potassium and trace minerals

  • Dandelion – packed with trace minerals.

  • Garlic & Ginger – natural pest repellents.


Benefits of Using Fermented Plant Extracts in Your Garden


Enhanced Soil Fertility and Microbial Life

FPEs enrich the soil with essential nutrients and bioactive compounds that promote microbial diversity, improving soil structure and fertility.


Natural Pest and Disease Resistance

Some fermented extracts act as natural pesticides, helping repel harmful insects and prevent fungal infections. FPEs can also improve overall plant and soil health, which can help prevent disease.


Boosting Plant Growth and Yield without compromising quality

Gardeners report stronger root development, greener leaves, and higher yields when using fermented plant extracts regularly, all without compromising the quality of the finished product


Sustainable and Eco-Friendly Gardening Practices

Unlike chemical fertilizers, FPEs are biodegradable, safe for pollinators, and support sustainable gardening practices.


How to Make Fermented Plant Extracts at Home


Step-by-Step Fermentation Process

  1. Collect 4 cups of fresh plant material or 1 cup dried plant material.

  2. Chop into small pieces.

  3. Place in a food safe, 5 gallon bucket with non-chlorinated water.

  4. Add 1 cup of molasses (to fuel microbes).

  5. Add 1 cup of fermenting microbes (EM-1, LABs, IMO)

  6. Seal loosely and let ferment for 10-20 days (or longer – the longer it ferments, the more plant matter breaks down, and the more concentrated the FPE will become)

  7. When FPE has a pH of 3.5 or lower, it is ready to use

  8. Strain and dilute before use – start with 1 TBSP per gallon for soil drench and ½ TBSP per gallon foliar feed


Best Plants to Use for DIY Extracts

  • Plants around your yard (dandelion, nettle, comfrey)

  • Herbs (basil, rosemary, thyme, garlic)

  • Kitchen greens (fruit and vegetable scraps)


Tips for Successful Fermentation

  • Keep away from direct sunlight.

  • Use a breathable lid to release gases.

  • The warmer the waiter, the faster your FPE will ferment. We recommend starting with 100 degree F water and keeping your FPE in a warm space.


How to Apply Fermented Plant Extracts in the Garden


Soil Application

Dilute the extract with water (1 TBSP per gallon) and pour directly onto the soil to feed roots.


Foliar Spray Method

Spray diluted extract (1/2 TBSP per gallon) on leaves for quick nutrient absorption and pest resistance.


Combining with Compost and Mulch

Mix with compost tea or apply before mulching for long-lasting soil enrichment. Also makes a great compost starter.


Common Mistakes to Avoid with Fermented Plant Extracts


Using the Wrong Plants

Avoid toxic plants (like poisonous weeds) that may harm your soil or crops.


Incorrect Dilution Ratios

Undiluted extracts can “burn” plants. Always dilute before applying.


Comparing Fermented Plant Extracts vs. Chemical Fertilizers

Feature

Fermented Plant Extracts

Chemical Fertilizers

Cost

Very low (homemade)

High

Soil Health

Improves microbial life

Depletes soil over time

Environmental Impact

Eco-friendly

Can cause pollution

Nutrient Release

Slow, natural

Fast but short-lived

Frequently Asked Questions (FAQs)


1. How long does it take to make fermented plant extracts?

Typically, 10–20 days, depending on temperature and plant material.

2. Can fermented extracts replace chemical fertilizers completely?

Yes, but balance is key. They work best when combined with compost and other organic practices.

3. Which plants give the best results when fermented?

Nettle, comfrey, and dandelion are popular choices due to their rich nutrient content.

4. How often should I apply fermented extracts in my garden?

Every week during the growing season.

5. Do fermented extracts smell bad?

Depending on what you are fermenting, yes they can. Grasses and weeds tend to smell bad, but herbs, fruits and vegetables tend to smell good.

6. Are fermented plant extracts safe for edible gardens?

Absolutely. They are safe, organic, and help produce healthier fruits and vegetables.


Conclusion: Why You Should Use Fermented Plant Extracts in Your Garden

Fermented plant extracts are more than just a natural fertilizer—they’re a complete soil and plant health booster. By improving microbial life, reducing dependency on chemicals, and promoting sustainability, they make gardening more rewarding and eco-friendly. If you want healthier plants, richer harvests, and a thriving garden ecosystem, now you know why you should use fermented plant extracts in your garden.


fermented plant extract being made

 
 
 

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