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Top 4 ways banana peels can help your plants grow

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Discover 4 ways to use banana peels to boost growth, enrich soil, and reduce waste with our top tips.

Learn simple ways to use banana peels in your garden. These easy tips can boost plant growth, enrich soil, and reduce food waste.

What's the big deal about banana peel?

Banana peels are rich in:

  • calcium – helps roots grow
  • magnesium – supports photosynthesis
  • sulphur – helps plants stay strong and resist pests
  • phosphorus – supports flowers and fruit
  • potassium – helps plants stay healthy and fight disease

In short, banana peels are a simple way to feed your indoor and outdoor plants.

Ways to use banana peels in your garden

Encourage your garden to thrive with these easy top tips.

1. Make a homemade liquid fertiliser and pest spray

Cut banana peels into small pieces and place them in a container. Cover with water and leave for two to three days. Stir now and then.

Strain the mix and use the water to feed your plants.

You can also use this mix as a gentle pest spray. Pour the liquid into a spray bottle and spray it onto leaves and stems.

To boost the mix, you can add crushed eggshells or a small amount of Epsom salts.

You can also add banana peels to your worm farm, bokashi system, compost bin, or bury them in your garden soil.

2. Make a slow-release fertiliser

Chop banana peels into small pieces. Dry them in the sun or in a low oven with the door slightly open.

Once dried, use the pieces as chips or grind them into a powder. Bury the powder or chips in garden soil or mix them into potting mix.

This slow‑release fertiliser is great for plants like staghorn ferns, bird’s nest ferns, orchids, and bromeliads. Use it every few months.

3. Use banana peels as mulch

Banana peels can also act as a simple mulch layer. As they break down, they release nutrients back into the soil.

Place the peels on top of the soil in a single layer. Keep them away from plant stems.

Cover the peels with regular mulch, such as sugar cane mulch, to help reduce fruit flies.

4. When unsure, compost them!

Banana peels are perfect for compost. They break down well and add important nutrients to your compost or worm farm.

Council's compost rebate program can help you start composting at home. The rebate covers approved compost and food‑waste recycling equipment. There is a system for every home, whether you rent or own.

If you cannot compost at home, you can drop banana peels and food scraps at a community composting hub.

Video 

Watch our video below or watch it on Council's YouTube channel.

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Use banana peels to help your garden grow.

1. Make liquid fertiliser or aphid repellent - Add the skins to a container and cover with water. Optional: add 1 tsp of Epsom salt and crushed eggshells. Allow to soak for 2 to 3 days. Strain the mixture. Add the skins and eggshells to your compost or worm farm. Use as a liquid fertiliser. Or as a spray to deter aphids.

2. Make a slow release fertiliser.

Add chopped skins to a tray - dry the skins in a low oven or in the sun. Use the dried banana skins on pot plants or in soil. You can also grind the dried skins to a powder. Epiphytes such as staghorn, orchids, bromeliads, and bird's nest ferns love this fertiliser.

3. Use them as mulch.

Avoid plant stems. Cover with regular mulch to avoid attracting fruit flies.

Visit brisbane.qld.gov.au for more waste saving ideas.

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