Brew Worm Compost Tea using this Vermicompost Tea Recipe

Brewing a Batch of Worm Compost TeaRead this article to learn how to make liquid plant fertilizer using worm compost tea.

What is compost tea?

Compost tea is a tea made from steeping (or brewing) compost instead of tea leaves. It isn’t appetizing for you but your plants will love it! The nutrients and beneficial microbes in the compost diffuse into the water making liquid fertilizer for your plants. There are two ways to make compost tea: the basic method (simple steeping) or the aerated brewed version. This article will teach you a compost tea recipe and instructions for both compost tea brewing methods.

What is vermicompost tea?

Vermicompost tea is simply compost tea that was brewed using vermicompost (also called worm castings or worm poop) as your compost instead of compost from a hot compost pile. Using your vermicompost or vermicast to make worm compost tea is a great use of your nutrient rich worm castings.

Simple or Basic Worm Compost Tea Recipe

To make a batch of basic worm compost tea, all you really need to do is soak some vermicompost overnight in water. I prefer to use something as a makeshift tea bag because it makes it less messy but it is not necessary. Here is the basic worm compost tea recipe that I use.

  • Find something to use as a tea bag (old t-shirt, panty hose, cheese clothe, etc).
  • Fill your homemade tea bag with worm compost and tie off the open end of the bag.
  • Submerge the worm compost tea bag in a bucket of water. I use a 5 gallon bucket but any size bucket will work.
  • Let it sit overnight. In the morning the water should be light brown.
  • Because the beneficial microbes in the worm compost will start to die off, water your garden first thing in the morning for best results.
  • Remove the worm compost tea bag from the bucket, cut it open and add the worm compost either to your garden, your worm compost bin, or your hot compost pile.

Aerated Brewed Worm Compost Tea Recipe

To brew a batch of aerated worm compost tea, you will do roughly the same procedure as the basic worm tea recipe except you will be introducing a sugar source and an aeration device. The sugar and aeration wakes up, feeds, and increases the population of the beneficial microorganisms living in the worm compost making this method the absolute best for your plants. Here is my aerated brewed worm compost tea recipe:

  • Put roughly 1 gallon of finished worm castings (without a tea bag) into a 5 gallon bucket. I never measure, just use a shovel full of vermicompost.
  • Add 4 gallons of water (rain or well water is best because it is not chlorinated).
  • Add 1 ounce of unsulfured molasses to provide a food source for the beneficial microorganisms living in the worm poop. You can use almost any sugar source.
  • Stick the bubbler (airstone) end of an aquarium aerator down to the bottom of the bucket and turn it on. Let the brew sit for 3 days stirring occasionally.
  • You may want to strain the worm compost tea before using.
  • For best results, use the brewed worm tea immediately.
  • Tip for even better results: Follow the worm compost tea recipe above, but add 2 cups of alfalfa pellets (rabbit food) for some extra Nitrogen in the worm poop brew.

How to Use Worm Compost TeaGardening with Kids

Now that you have made a batch of worm compost tea, try one of the below methods in your garden or home. If you have a large garden or many house plants, worm Compost tea can be diluted with water to cover more space. Check out these uses for worm compost tea:

  • Water your garden as you normally would
  • Water your house plants
  • Use to water seedlings or baby plants
  • Cover the whole plant with worm compost tea, including the leaves. Many people believe that the beneficial microbes in worm compost tea help protect the plant from diseases.
  • Serve worm compost tea at your next tea party.
  • NOTE: one of these is a joke.

If you haven't started worm composting yet, be sure to read: Getting Started with Worm Composting

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