Effectively delivers nutrients and beneficial microbes to your plants
Materials Needed
- High-quality compost (preferably homemade or organic)
- Water (non-chlorinated is best, so let tap water sit for 24 hours if needed)
- A large bucket or container (5 gallons is a common size)
- A stirring stick or aeration device (optional but helps with the brewing process)
- A mesh bag or old pillowcase (optional, for easy straining)
- An aquarium pump and air stone (optional, for active aeration)
Instructions
- Select high-quality, well-aged compost. It should be rich, dark, and crumbly. Avoid compost that is not fully decomposed or smells unpleasant.
- Fill your bucket about one-third to one-half full with compost. If using a mesh bag or pillowcase, place the compost inside the bag and tie it securely. This makes straining easier later on.
- Fill the rest of the bucket with water. Aim for a 5:1 ratio of water to compost (e.g., 5 gallons of water to 1 gallon of compost). Make sure to use non-chlorinated water, as chlorine can kill beneficial microbes in the compost.
- Stir the mixture well to combine the compost and water. For better results, use an aquarium pump and air stone to continuously aerate the mixture. Aeration helps to increase the population of beneficial microbes and prevents anaerobic bacteria (which can produce harmful compounds) from thriving.
- Let the mixture steep for 24-48 hours. Stir the tea several times a day if you're not using an aeration device. The tea should develop a rich, earthy smell. If it smells bad or rotten, discard it and start over, as this indicates the presence of harmful anaerobic bacteria.
- After brewing, strain the compost tea to remove solid particles. Use a fine mesh strainer, cheesecloth, or the mesh bag/pillowcase method. The liquid you have left is your compost tea.
- Use the compost tea immediately for the best results. You can apply it directly to the soil around plants, or as a foliar spray on leaves. Avoid using it during the heat of the day to prevent leaf burn; early morning or late afternoon is ideal.
Tips for Success
- Compost tea is most effective when used fresh, within a few hours of brewing.
- Apply compost tea every 2-4 weeks during the growing season to boost plant health.
- If you must store compost tea, keep it in a cool, dark place and use it within a day or two to ensure it remains effective.
By making and using your own compost tea, you can provide your garden with a natural, nutrient-dense boost that promotes healthy soil and vibrant plants.