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🌿How to Make Fermented Banana Fertiliser (Natural Garden Feed Recipe Australia)

  • Writer: Sweet Earth Products
    Sweet Earth Products
  • May 4
  • 3 min read

There’s something deeply grounding about returning scraps back to the soil…closing the loop… and feeding the earth that feeds us 🌱


Here on our little slice of paradise, nothing goes to waste.


This morning’s ritual? A simple, powerful, living fertiliser made from homegrown organic banana peels and mineral-rich molasses.


No chemicals. No synthetics.Just nature… doing what she does best.


If you’ve been looking for a natural way to nourish your garden, support soil health, and grow stronger, more vibrant plants — this is one of the most beautiful places to begin.


Handmade fermented banana fertiliser in preparation using organic banana peels soaking in water on stovetop in home kitchen
Handmade fermented banana fertiliser in preparation using organic banana peels soaking in water on stovetop in home kitchen

Why Banana Fertiliser Works

Banana peels are absolute gold for the garden.


They’re naturally rich in:


  • Potassium – supports flowering, fruiting & strong plant structure

  • Phosphorus – encourages root development

  • Calcium & Magnesium – helps overall plant health and resilience


When we ferment them… something magical happens!


The nutrients become more bioavailable, and the fermentation process creates a living solution that feeds not just your plants — but the microbial life in your soil.


And that’s where the real magic is.



Why Add Molasses or Brown Sugar?

This is where we activate the life in the brew…


  • Molasses (especially organic, unsulphured) is rich in trace minerals and sugars

  • Brown sugar works similarly as a ferment starter


These natural sugars:


  • Feed beneficial microbes

  • Kickstart fermentation

  • Help break down the banana peels into a nutrient-rich liquid


Think of it as… food for your soil’s ecosystem.


Pouring organic molasses into banana peel ferment to create natural nutrient-rich garden fertiliser
Pouring organic molasses into banana peel ferment to create natural nutrient-rich garden fertiliser

🍌DIY Fermented Banana Fertiliser Recipe


What You’ll Need:

  • Banana peels (organic is best)

  • 1–2 litres of water

  • 2–4 tablespoons organic molasses or brown sugar

  • Glass jar or container (avoid plastic if possible)

  • Lid (loose fitting or breathable cloth)


How to Make It:

  1. Chop your banana peels

    Smaller pieces = faster fermentation.

  2. Add to your jar

    Fill loosely — don’t pack too tight.

  3. Pour in water

    Enough to fully submerge the peels.

  4. Add molasses or brown sugar

    Stir gently to dissolve.

  5. Cover your jar

    Keep it slightly breathable — fermentation creates gases.

  6. Let it ferment

    Leave in a warm, shaded spot for 5–10 days.

  7. Strain the liquid

    Once it smells slightly sweet, earthy (not rotten), it’s ready.


How to Use Your Banana Fertiliser

This is a concentrate, so always dilute before use:


Mix 1 part fertiliser to 5–10 parts water

Use it to:

  • Water around the base of plants

  • Feed fruiting plants, veggies, and flowers

  • Boost soil before planting

    💡 Best used every 1–2 weeks



Glass jar filled with banana peels and liquid ferment for natural DIY garden fertiliser on kitchen scale

What to Do With the Leftover Peels?

Don’t toss them!

  • Add to your compost

  • Bury directly into garden beds

  • Feed your worm farm


Nothing wasted. Everything returned.


A Gentle Note

Your nose is your guide.

A healthy ferment will smell:

  • Slightly sweet

  • Earthy

  • Mildly tangy


If it smells putrid or rotten, it’s best to discard and start fresh.


From Our Garden to Yours

This is how we do things here at Sweet Earth…

Slow. Intentional. Earth-first.


Because what we grow in… matters just as much as what we grow.

And when we nourish the soil —we nourish everything that rises from it 🌱


Simple. Natural. Effective.

Just the way it should be.


From paddock to jar. From jar to skin. From ritual to remedy. That is the Sweet Earth way.


Love. Balance & Wholeness.

Stay Great-full. Stay Rooted.

Love All Ways.

Hala xo 🌿✨

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From paddock to jar. From jar to skin. From ritual to remedy. Love. Balance & Wholeness.
Stay Great-full. Stay Rooted. Love All Ways. Hala xo 

 

In the spirit of unity within this healing journey Sweet Earth Products acknowledges the local Taribelang Bunda, Gangulu, Gooreng, Gureng Gureng, Bayali Peoples, the Traditional Custodians of country throughout Australia and their connections to land, sea and community. We pay our respect to their elders past and present and extend that respect to all Original and Torres Strait Islander peoples today

© Sweet Earth Products | Handcrafted in Queensland, Australia
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