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How to make Compost Tea - Easy to make Organic Compost Tea for your Garden

Updated on July 24, 2009
Giant Vegetables, I'm sure those growers use a compost tea :)
Giant Vegetables, I'm sure those growers use a compost tea :)

Compost Tea

So you've been gardening for quite some time and your garden is coming along nicely but has not turned out as grand as you would like. You may already use manure and fertilizer to help you produce a bigger and quicker harvest but sometimes a regular fertilizer is not enough.

Making a compost tea can really help speed up vegetable/fruit growth and produce a bigger crop for harvest. A basic compost tea is made up from adding compost to water and using aeration to breed bacteria that are beneficial to plants.

Compost Tea Benefits

The benefits of using a compost tea on your garden are

- Increased Harvest

- Larger produce

- Help plants resist disease and pests

- Used by many professional gardeners to grow Guinness book of records size pumpkins and other giant vegetables.

how to make compost tea using aeration
how to make compost tea using aeration

Compost Tea Recipe - How to make Compost Tea

So now for a compost tea recipe that I currently used and have success with

Equipment needed

- A Bucket ( size depending on how much compost tea you plan to make)

- Aeration Device ( simple aquarium air pump will work fine , used to force air into the mixture)


- 9 Litres of Water

- 1-2 Cups of homemade or bought compost

- 2 capfuls of seaweed fertilizer

- 2 capfuls of fish emulsion

- 2 capfuls of liquid humic acid

- 3-4 tablespoons of Molasses


1. Fill the Bucket with water and setup your air pump

2. Add Compost to the water and mix

3. Add all other ingredients, make sure to mix the molasses in properly as it can easily get stuck to one side.

To grow the beneficial bacteria try to ensure the water temperature is not too cold as hotter temperatures will ensure larger bacteria growth.

Let the compost tea mixture aerate for around 12 to 24 hours before using it on your garden. Some people have known to let it aerate for about 36 hours but any longer than that and a lot of the beneficial bacteria will die off.

Using your compost Tea

To use your compost tea on your garden mix 5 parts water with 1 part compost tea. Ensure the water you use has all chlorine removed as this will instantly kill any bacteria you have worked hard to make. The simplest way to remove the chlorine is to let the water sit outside in the sun for 24 hours otherwise aerating the water or adding chlorine remover will work just fine.

The importance of each ingredient to make Compost Tea

Molasses - The Molasses works as a food source for the bacteria and has added benefits as Molasses has the ability to turn the vitamins and minerals into a form that is easily absorbed by the plants. Any simple sugar source will work fine to feed the bacteria , many people use basic sugar, glucose or honey.

Humic Acid - probably the most important ingredient that will add extra benefit to your compost tea. Humic acid is the end product of decomposing organic compounds and is extremely effective at increasing plant size and fruit production.

Humic acid is said to increase the plants cell structure and give the plants the ability to absorb more water and nutrients. This is why so many people who grow giant vegetables will always have a high quality humic acid in there compost tea. I currently use a liquid compost tea as the really high quality humic acids (humates) can be extremely expensive.

Fish Emulsifier / Seaweed Fertilizer - Provides many essential vitamins and minerals for the plant as well as nitrogen , phosphorus and potassium.

Have fun :)

Goodluck with your gardens everyone and have fun experimenting with your own compost tea concoction,you see making compost tea can be great fun:P until next time:)


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    • profile image


      7 years ago

      Bio-dynamic macro oils are critical to aide humic tea decomp process

    • GracieLake profile image


      7 years ago from Arizona

      What a great idea. Once I get enough compost going I will give this a try.

    • profile image


      8 years ago

      receipe for 100 gals of compost tea with cow manure

    • expectus profile imageAUTHOR


      8 years ago from Land Downunder

      just a little bit should be ok, as you don't want to kill the benefical bacteria

    • profile image


      8 years ago

      can i use 20 0 0 liquid fertilizer in compost tea

    • expectus profile imageAUTHOR


      8 years ago from Land Downunder

      I bought some from a local nursery but you should be able to buy it online, avoid the liquid humic acid and go for the powder its much better bang for your buck

    • profile image


      8 years ago

      were do i buy humic acid and kelp meal ? im in canada ont can find it ?

    • expectus profile imageAUTHOR


      8 years ago from Land Downunder

      thanks for the comment exinco , I may make another hub about it, its actually very simply just mix water with all sorts of nutrients good for plants and aerate it with an air pump:)

    • exinco profile image


      8 years ago from Malaysia

      hi, you have good sharing. unfortunately i'm noob. i start my vermicompost in September 2009. Compost tea is new to me. I hope that you post another hub regarding Compost tea or send me a message on how to make it.


    • expectus profile imageAUTHOR


      9 years ago from Land Downunder

      thanks for the comment:) its great fun making it too can't wait to get back into it once i'm out of these colder months


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