What is Compost Tea?

Compost tea is a liquid fertilizer that is made by steeping compost in water. It is a natural and organic way to provide nutrients to plants and improve soil health. Compost tea is rich in beneficial microorganisms, such as bacteria, fungi, and protozoa, which help break down organic matter and release nutrients that plants can absorb. This nutrient-rich liquid can be applied to plants’ leaves or soil, providing them with a boost of nutrition and promoting healthy growth.

The Benefits of Compost Tea

Compost tea offers several benefits for both plants and the environment. Here are some of the key advantages:

1. Nutrient-Rich

Compost tea is packed with essential nutrients that plants need for optimal growth. The compost used to make the tea is typically made from a mixture of organic materials, such as kitchen scraps, yard waste, and manure. As the compost breaks down, it releases nutrients like nitrogen, phosphorus, and potassium, which are vital for plant development. When plants are sprayed with compost tea, they can quickly absorb these nutrients through their leaves, resulting in healthier and more productive plants.

2. Soil Conditioning

Compost tea is not only beneficial for plants but also for the soil in which they grow. When applied to the soil, the microorganisms present in the tea help improve soil structure and fertility. These microorganisms break down organic matter, making nutrients more available to plants. Additionally, compost tea can help increase the soil’s water-holding capacity, reduce erosion, and enhance its overall health. By regularly using compost tea, gardeners can create a thriving and nutrient-rich soil environment for their plants.

3. Disease and Pest Resistance

One of the significant advantages of compost tea is its ability to enhance plants’ natural defenses against diseases and pests. The beneficial microorganisms present in the tea can help suppress harmful pathogens and pests by outcompeting them for resources. Additionally, compost tea can stimulate the plants’ immune system, making them more resistant to diseases and pests. By regularly applying compost tea, gardeners can reduce the need for chemical pesticides and promote a healthier and more sustainable gardening practice.

4. Environmental Sustainability

Compost tea is an environmentally friendly alternative to synthetic fertilizers and pesticides. By using compost tea, gardeners can reduce their reliance on chemical inputs, which can have harmful effects on the environment. Compost tea is made from organic materials that would otherwise end up in landfills, contributing to greenhouse gas emissions. By recycling these materials and turning them into compost tea, gardeners can contribute to a more sustainable and eco-friendly gardening approach.

How to Make Compost Tea

Making compost tea is a relatively simple process that can be done at home. Here is a step-by-step guide on how to make compost tea:

1. Gather Your Materials

To make compost tea, you will need the following materials:

– Compost: Use high-quality compost made from a mixture of organic materials.

– Water: Use chlorine-free water, such as rainwater or well water.

– Container: Use a large container, such as a bucket or a trash can, to hold the compost and water.

– Aeration device: Use an aquarium pump or a compost tea brewer to provide oxygen to the tea.

– Strainer: Use a fine-mesh strainer or cheesecloth to remove any solid particles from the tea.

2. Prepare the Compost

Place the compost in a mesh bag or directly in the container. The amount of compost you need will depend on the size of your container. Aim for a ratio of 1 part compost to 4 parts water.

3. Add Water

Add chlorine-free water to the container, covering the compost completely. The water should be at room temperature.

4. Aerate the Tea

If using an aquarium pump, attach an air stone to the pump and place it in the container. If using a compost tea brewer, follow the manufacturer’s instructions. Aerate the tea for 24-48 hours, ensuring a constant flow of oxygen.

5. Strain the Tea

After the brewing period, remove the compost or mesh bag from the container. Strain the tea through a fine-mesh strainer or cheesecloth to remove any solid particles.

6. Apply the Compost Tea

Apply the compost tea to your plants by either spraying it on the leaves or watering the soil around the plants. For best results, apply the tea within 4-6 hours of straining to ensure the maximum number of beneficial microorganisms are present.


Compost tea is a powerful and natural fertilizer that can provide numerous benefits to plants and the environment. Its nutrient-rich composition, soil conditioning properties, disease and pest resistance, and environmental sustainability make it an excellent choice for gardeners looking to enhance their gardening practices. By following the simple steps outlined above, you can easily make your own compost tea and enjoy the many advantages it offers. Incorporate compost tea into your gardening routine and watch your plants thrive!