A DIY Guide to Brewing Nutrient-rich Compost Tea for your Cannabis Plants

Introduction: What is Compost Tea?


Introduction: What Is Compost Tea?
Compost tea is a nutrient-rich liquid made from compost that is used to boost soil fertility and enhance plant growth. It’s a simple and cost-effective way to provide plants with the necessary nutrients they need. This organic and eco-friendly solution is an excellent alternative to chemical fertilizers and pesticides that can be harmful to the environment and human health.

Compost tea is made using a compost pile or bin that is filled with organic materials such as food scraps, leaves, grass clippings, and other plant material. These materials are left to decompose over time, creating a nutrient-rich humus that can be used to replenish depleted soil. The liquid from this humus can be extracted and used as a fertilizer for plants, making it a great choice for both indoor and outdoor cannabis plants.

Aside from being eco-friendly, compost tea provides several benefits for cannabis plants. It enhances soil health by increasing beneficial microorganisms that help break down organic matter and make nutrients available to plant roots. Additionally, it increases plant growth and yields by providing a rich source of essential nutrients that are readily absorbed by the plant.

Compost tea is an excellent solution for those who want to improve soil health and plant growth while also being kind to the environment. By using compost tea instead of chemical fertilizers, you can provide your cannabis plants with the necessary nutrients while reducing your environmental impact.

Benefits of Using Compost Tea to Grow Cannabis Plants

Benefits Of Using Compost Tea To Grow Cannabis Plants
Growing cannabis plants can be a challenging task, especially for those who prefer organic and eco-friendly methods. While there are many fertilizers and additives available on the market, their long-term effects on soil health and the environment are a concern. This is where compost tea comes in as an excellent alternative. Compost tea is packed with essential nutrients and beneficial microorganisms that can enhance the growth of cannabis plants. In this section, we will explore the numerous benefits of using compost tea and why it is an excellent choice for cannabis growers who want to promote the health of their plants and the earth.

1. Organic and Eco-friendly

Compost tea is a completely organic and eco-friendly solution for growing cannabis plants. It is made from natural, organic ingredients that are free from harmful chemicals that can affect the quality of the final product. By using compost tea, you are not only promoting natural growing practices, but you’re also reducing the impact on the environment.

Organic: Compost tea is made from organic materials such as compost, worm castings, and other natural ingredients. When using compost tea, you are not introducing any harmful chemicals to the growing environment that could potentially harm the cannabis plants or the final product.

Eco-friendly: Compost tea is an eco-friendly solution for growing cannabis plants because it promotes sustainability and reduces waste. By using compost tea, you are utilizing organic waste materials that would typically end up in landfills. In turn, this reduces the amount of landfill waste and promotes a healthier environment.

Biodiversity: Compost tea also promotes biodiversity in the growing environment. The natural ingredients in compost tea encourage beneficial microbial activity in the soil, which can improve soil health and increase nutrient uptake in cannabis plants.

Compost tea is a natural and sustainable solution for growing cannabis plants. Its organic and eco-friendly properties make it an excellent choice for those who want to promote natural growing practices and reduce their impact on the environment.

2. Nutrient-rich

Compost tea is a nutrient-rich solution that provides a wide range of essential nutrients to cannabis plants. It contains a variety of nutrients such as nitrogen, phosphorus, potassium, calcium, magnesium, and sulfur. These nutrients are essential for plant growth and development.

Some of the key nutrients found in compost tea and their benefits for cannabis plants are:

  • Nitrogen: Nitrogen is essential for the growth of leaves and stems, and it helps to increase the overall size and vigor of the plant.
  • Phosphorus: Phosphorus is vital for the development of healthy roots, flowers, and fruits. It also plays a crucial role in the production of energy for the plant.
  • Potassium: Potassium helps to regulate water balance in plants and is necessary for the production of starches and sugars. It also enhances the plant’s resistance to disease and pests.
  • Calcium: Calcium is crucial for strong cell walls and healthy cell division. It also helps with the absorption and transportation of other nutrients.
  • Magnesium: Magnesium is essential for the production of chlorophyll, which is necessary for photosynthesis. It also helps with the uptake of other nutrients such as phosphorus and potassium.
  • Sulfur: Sulfur is essential for the production of proteins and enzymes. It also helps with the development of chlorophyll, which is necessary for photosynthesis.

By using compost tea in your cannabis plant’s feeding regimen, you can ensure that they receive a steady supply of these essential nutrients. This can lead to faster growth, higher yields, and overall healthier plants.

3. Enhances Soil Health

Compost tea is not only rich in nutrients but also beneficial to the soil health when used to grow cannabis plants. Here are some ways in which compost tea enhances the soil health:

Benefit Description
Aerates the Soil Compost tea contains microorganisms that help to loosen up the soil, allowing more air to circulate. This, in turn, enables the plant roots to access the necessary oxygen, leading to better plant growth.
Increases Soil Fertility Compost tea is rich in nutrients like nitrogen, phosphorus, and potassium. By adding compost tea to the soil, these nutrients are absorbed by the plant roots, leading to healthier and more robust cannabis plants.
Suppresses Soil-borne Diseases The beneficial microorganisms present in compost tea act as a natural barrier to soil-borne diseases. When plants are exposed to compost tea, they become more resistant to harmful bacteria and fungi, leading to a healthier growing environment.
Improves Water Retention Soil that contains compost tea is better at retaining water, reducing the risk of drought stress for your cannabis plants. This is because compost tea contains a natural wetting agent that improves water penetration and retention in the soil.

Using compost tea to grow cannabis plants not only provides them with essential nutrients but also fosters a healthier growing environment by enhancing soil health.

4. Increases Cannabis Yields

When it comes to growing cannabis plants, the ultimate goal is to achieve a high yield of potent and healthy buds. Compost tea can help you achieve that goal by providing a nutrient-rich soil that supports the growth and development of cannabis plants. A healthy soil ecosystem allows plants to absorb essential nutrients and minerals more efficiently, which ultimately leads to better growth and higher yields.

Compost tea contains a diverse range of macro and micronutrients, along with beneficial microorganisms that work together to enrich the soil and promote plant growth. This nutrient-rich liquid can help cannabis plants produce stronger and healthier roots, which in turn leads to healthier plants that are more resistant to pests and diseases.

In addition to nutrient-rich soil, compost tea also strengthens the plant’s immune system, making it less susceptible to pests and diseases. By increasing the yield and quality of the crop, compost tea can also help cannabis growers save time and money in the long run. Using compost tea as a natural, organic fertilizer can lead to healthier plants that require fewer chemicals or pesticides, leading to a more sustainable and eco-friendly method of cultivation.

Here is a table highlighting some of the benefits of using compost tea to increase cannabis yields:

Benefits Description
Nutrient-rich Compost tea provides essential macro, and micronutrients that support healthy plant growth.
Improves Soil Health The beneficial microorganisms in compost tea strengthen the soil’s ecosystem, leading to healthier plants.
Increases Root Growth Compost tea promotes stronger root growth, leading to healthier and more productive plants.
Strengthens Immune System The beneficial microorganisms in compost tea help strengthen plants’ immune systems, leading to fewer pests and diseases.
Improves Yield and Quality Using compost tea can lead to higher yields and better quality buds, resulting in a more profitable harvest.

Using compost tea to increase cannabis yields is an excellent way to cultivate healthier and more potent plants. By providing essential nutrients and beneficial microorganisms, compost tea promotes a healthy soil ecosystem that supports optimal plant growth and development.

How to Make Compost Tea at Home for Cannabis Plants?

How To Make Compost Tea At Home For Cannabis Plants?
Now that we’ve established the benefits of using compost tea for growing cannabis plants, you might be wondering how to make it at home. Fortunately, the process is simple and straightforward, and you can easily make your own nutrient-rich compost tea with a few basic ingredients and tools. So, let’s dive into the steps you need to take to create high-quality compost tea that will help your cannabis plants thrive.

1. Gather the Ingredients

Before brewing compost tea for your cannabis plants, it is essential to gather high-quality organic ingredients that will provide your plants with the necessary nutrients for healthy growth. Here are some of the ingredients you will need:

  • Compost: The key ingredient for brewing compost tea is compost. Make sure to use high-quality compost that is rich in microorganisms, such as worm castings, vermicompost, or fully decomposed compost from various sources.
  • Food for Microbes: To feed the microorganisms in your compost tea, you will need to add some simple sugars, such as molasses or corn syrup, or complex carbohydrates like kelp meal, alfalfa meal or fish hydrolysate. These ingredients will provide the necessary energy source for the beneficial microbes to thrive and populate.
  • Air: To brew compost tea, you will need a continuous supply of oxygen for the microorganisms to breathe and multiply. You can use an air pump that bubbles air through the tea, or use a compost tea brewer. The oxygen will support the growth and activity of the microbes, making sure that the compost tea is rich in microbes.
  • Water: Your final ingredient will be water. Use filtered or de-chlorinated water if possible to avoid killing any beneficial microbes before you brew your compost tea. Make sure your water temperature is between 60-75°F (15-24°C) as this is the ideal range for brewing compost tea.

By gathering the above ingredients, you are ready to start brewing compost tea for your cannabis plants. Remember that the quality of your compost and ingredients will determine the quality of the resulting compost tea, which will ultimately affect your cannabis plant’s health and performance.

2. Preparing Compost Pile or Bin

Before you can start brewing compost tea, it’s important to properly prepare your compost pile or bin to ensure that you have high-quality compost. Here are the steps to preparing your compost pile or bin:

  • 1. Choose the Right Composting Method: There are several different methods for composting, including aerobic composting, anaerobic composting, vermicomposting and bokashi composting. Choose the method that suits your needs and environment the best.
  • 2. Choose the Right Container: If you’re using a bin, choose a container that is large enough to hold all of your compost materials and has a lid to keep pests out. If you’re composting in a pile, choose a spot that is well-draining and has good air circulation.
  • 3. Collect Your Materials: Collect a variety of organic materials, such as vegetable scraps, yard waste, coffee grounds, and eggshells.
  • 4. Layer Your Materials: Layer your materials in the bin or pile, with a mix of greens and browns. Greens include nitrogen-rich materials like vegetable scraps and grass clippings. Browns include carbon-rich materials like dried leaves and straw.
  • 5. Add Water: Composting materials should be moist, but not too wet or too dry. If your compost pile is too dry, add water to help the decomposition process.
  • 6. Turn the Pile: Turn the compost pile regularly to help aerate it and speed up the decomposition process. The more you turn the pile, the faster you’ll get compost.
  • 7. Wait for the Compost to Mature: Composting can take anywhere from a few weeks to a few months, depending on the method and materials used. When your compost is ready, it should be dark, crumbly, and have a earthy smell.

By following these steps, you’ll be able to create high-quality compost that’s rich in nutrients and perfect for brewing compost tea for your cannabis plants.

3. Brew Compost Tea

To brew the compost tea, follow these simple steps:

  • Step 1: Fill a large container, such as a 5-gallon bucket, with non-chlorinated water (preferably rainwater) and let it sit in the sun for at least an hour to release any chlorine.
  • Step 2: Add the compost to a mesh bag or cheesecloth and place it in another container (such as a 5-gallon paint strainer). Be sure the bag is submerged in the water.
  • Step 3: Add any additional ingredients, such as molasses, kelp meal or fish emulsion, according to your recipe. These natural ingredients will enhance the microbial and fungal activity in the compost tea and provide additional nutrients for your cannabis plants.
  • Step 4: Place an air stone or air pump in the container to aerate the tea. Aeration is important because it helps the beneficial bacteria and fungi to grow and multiply, and prevent the growth of harmful bacteria.
  • Step 5: Let the compost tea brew for 24-48 hours, depending on the recipe and temperature. A cooler room temperature will require a longer brewing time. You’ll know it’s ready when the water turns a dark brown color and a frothy layer forms on the surface of the water.
  • Step 6: Stir the compost tea a few times a day to keep the water aerated and prevent the buildup of a stagnant layer on the surface. This will also help the tea steep evenly and distribute the nutrients evenly.

Once the brewing process is complete, strain the compost tea to remove any solid waste and transfer the liquid to another container for storage. The compost can either be added back to the compost pile or used as a soil amendment. The strained compost tea can be used immediately or stored for up to a week in a cool, dark place.

4. Strain and Store the Compost Tea Solution

Once the brewing process is complete, it’s important to strain and store the compost tea solution properly. Here’s how you can do it:

Straining the Compost Tea Solution:

1. Use a fine mesh strainer or cheesecloth to remove any large particles of compost or debris from the liquid.

2. Pour the compost tea solution through the strainer into a clean container.

3. Use a spoon or spatula to press down on the compost in the strainer to extract as much liquid as possible.

4. Repeat the straining process if necessary, until the compost tea solution is free of any visible particles.

Storing the Compost Tea Solution:

1. Transfer the strained compost tea solution to a clean, dark container, such as a glass jar or plastic bucket.

2. Seal the container tightly to prevent any air, light, or moisture from entering.

3. Store the container in a cool, dry place away from direct sunlight, preferably at room temperature.

4. Use the compost tea solution within 24-48 hours of brewing for best results.

Benefits of Properly Straining and Storing Compost Tea Solution:

By properly straining and storing the compost tea solution, you can ensure that it remains fresh, potent, and free from any harmful contaminants. This can help to maximize its benefits when used for cannabis plants. Additionally, proper storage can help to prevent the growth of harmful bacteria or fungi, which can cause the compost tea solution to spoil or become unsafe for use.

How to Use Compost Tea for Cannabis Plants?

How To Use Compost Tea For Cannabis Plants?
Now that you have successfully brewed your own compost tea at home, it’s important to understand how to use it properly for your cannabis plants. Compost tea is a versatile solution that can be utilized in a variety of ways, from diluting and watering the plants to foliar spraying and soil drenching. In this section, we will explore the different methods of using compost tea and provide tips for getting the most out of this nutrient-rich solution. Let’s dive in!

1. Diluting and Watering the Plants

When it comes to using compost tea for cannabis plants, one of the most common methods is to dilute the tea and use it for watering the plants. Below is a step-by-step guide on how to do this:

Step 1: Dilute the compost tea with non-chlorinated water. Typically, a 10:1 ratio of water to compost tea is recommended.

Step 2: Use a watering can or hose to apply the diluted compost tea directly to the base of the plants.

Step 3: Be sure to water the soil thoroughly, allowing the tea to penetrate deeply into the root zone.

Step 4: Repeat this process every week or two throughout the cannabis plant’s growing season.

Step 5: Keep a careful eye on your plants and monitor their growth and health. Adjust the frequency and amount of watering as needed based on your observations.

Using compost tea for watering cannabis plants offers a number of benefits. The rich nutrients in the tea can help to improve soil health and stimulate plant growth, leading to larger yields and healthier plants overall. Additionally, the organic nature of compost tea means that it is an eco-friendly and sustainable alternative to synthetic fertilizers.

To summarize, diluting and watering cannabis plants with compost tea is a simple and effective way to enhance the health and growth of your plants. But be sure to keep a close eye on your plants and adjust your watering frequency as needed to achieve the best results.

2. Foliar Spraying

Foliar Spraying: Another way to use compost tea for cannabis plants is through foliar spraying. This technique involves applying the compost tea solution directly to the leaves of the plants. This is a great method for providing nutrients to the plants when the soil is not able to do so efficiently. The nutrients can be quickly absorbed by the leaves, leading to rapid growth and development.

To foliar spray your cannabis plants with compost tea, use the following steps:

Step Action
1 Mix the compost tea solution with water in a 1:1 ratio.
2 Transfer the mixture to a spray bottle.
3 Choose a time of day when the sunlight is not too intense, such as early morning or late afternoon.
4 Spray the compost tea solution evenly over both sides of the leaves of each plant in your garden, making sure to cover the entire plant.
5 Avoid spraying the solution too heavily, as this may cause the leaves to become waterlogged and lead to potential issues with mold or rot.
6 Repeat this process once every two to three weeks, depending on the growth stage of your plants.

Foliar spraying is an effective way to provide your cannabis plants with the nutrients they need to thrive. By following these steps carefully, you can ensure that your plants are receiving the proper care and maintenance they need to reach their full potential. Remember to always use high-quality compost tea and to experiment with different recipes until you find the one that works best for your specific plants.

3. Soil Drenching

Soil drenching is another way of using compost tea for cannabis plants. This method involves adding compost tea directly to the soil rather than spraying it on the leaves of the plants. This allows the nutrients and beneficial microorganisms to penetrate deeper into the roots, promoting better nutrient absorption and overall plant health.

To use compost tea for soil drenching, follow these steps:

Step Description
1 Prepare the compost tea solution as per the instructions above.
2 Measure the amount of compost tea solution required for the number of cannabis plants you want to fertilize. A good rule of thumb is to use about 1/2 to 1 cup of compost tea per plant.
3 Pour the measured amount of compost tea evenly around the base of each cannabis plant, making sure to wet the soil completely.
4 Allow the soil to absorb the compost tea for at least a few hours before watering again. Repeat this process every 2-4 weeks, depending on your plant’s needs.

Note: It’s important not to overdo the soil drenching as too much compost tea can cause the soil to become too acidic, which can be detrimental to the health of the cannabis plants. Always monitor your plants for signs of over-fertilization or under-fertilization, and adjust your compost tea application accordingly.

Soil drenching is a great way to use compost tea for cannabis plants, as it promotes better nutrient absorption and overall plant health. Always use high-quality compost and ingredients, avoid over-brewing or contamination, and experiment with different compost tea recipes to find what works best for your plants.

Tips and Tricks for Brewing Compost Tea for Cannabis Plants

As with any gardening method, there are always ways to improve and refine the process of brewing compost tea for cannabis plants. Here are some helpful tips and tricks that can elevate your compost tea game and maximize the benefits for your plants. From using quality ingredients to avoiding contamination, these suggestions will ensure that your cannabis plants are receiving the best possible boost from your homemade compost tea.

1. Use High-quality Compost and Ingredients

When brewing compost tea for cannabis plants, it is essential to use high-quality compost and ingredients. Here are some tips to ensure the best results:

  • Choose Quality Compost: The compost used in brewing compost tea should be of good quality and free from contaminants. Using inferior quality compost can potentially harm your plants and the soil.
  • Use Filtered Water: Use filtered or spring water for making your compost tea, as it is free from contaminants like chlorine and other chemicals. Tap water can contain chlorine that can kill beneficial microbes.
  • Include High-Quality Amendments: Adding high-quality compost amendments such as worm castings, bat guano or kelp adds more nutrients and beneficial microbes to the compost tea.
  • Avoid Chemicals: Avoid using any chemicals in your compost or adding them to your compost tea. Chemicals can kill beneficial microbes, and their residue can be harmful to your cannabis plants and the soil they grow in.
  • Avoid Overheating: Overheating the compost tea during the brewing process can kill beneficial microbes. Ensure the water temperature is between 60-80°F for the best results.

By following these tips, you can ensure high-quality compost tea for your cannabis plants that will provide an organic and nutrient-rich source for your plants to thrive on.

2. Avoid Over-brewing or Contamination

Avoid Over-brewing or Contamination

Over-brewing your compost tea can lead to the growth of harmful bacteria, which can harm your plants. It’s important to only brew your tea for the recommended amount of time, typically between 24 to 48 hours. Anything longer than that can introduce unwanted pathogens to your mix.

Contamination can also occur during the brewing process, leading to harmful pathogens or chemicals finding their way into your compost tea. To avoid this, make sure to use high-quality compost and ingredients, and keep your brewing equipment clean and sanitized.

Here are some additional tips for avoiding over-brewing and contamination:

Tips Details
Use an Aeration System Using an aeration system can help prevent over-brewing and contamination by ensuring that the tea remains well oxygenated throughout the brewing process. This promotes the growth of beneficial microbes while discouraging the growth of harmful bacteria.
Monitor Temperature Contamination can also occur if the compost tea brews at a temperature that is too hot. Aim to keep the brewing temperature between 65 and 85 degrees Fahrenheit.
Avoid Using Tap Water Tap water can contain chlorine or other chemicals that can harm the beneficial microbes in your compost tea. Use filtered or distilled water instead.
Keep Equipment Clean Make sure to clean and sanitize all brewing equipment, including buckets, air stones, and tubing, to prevent the introduction of harmful pathogens.
Compost Safety Use gloves and wash your hands thoroughly after handling compost. Also, be sure to store your compost tea away from food items and other plants to avoid cross-contamination.

By following these tips, you can ensure that your compost tea is a safe and beneficial addition to your cannabis gardening routine.

3. Experiment with Different Compost Tea Recipes

Growing cannabis plants can be a fun and rewarding experience, and using compost tea is a great way to boost their growth and yields. To take your compost tea brewing to the next level, you can try experimenting with different compost tea recipes. Here are some ideas to get you started:

Recipe Ingredients Process
Supercharged Compost Tea High-quality compost
Earthworm castings
Fish emulsion
Seaweed extract
1. Fill a 5-gallon bucket with water.
2. Add one shovel full of compost and a handful of earthworm castings.
3. Mix in ¼ cup of molasses, ¼ cup of fish emulsion, and ¼ cup of seaweed extract.
4. Let the mixture brew for 24-48 hours, stirring occasionally.
5. Strain and use immediately.
Bacterial Compost Tea Compost
1. Fill a 5-gallon bucket with water.
2. Add one shovel full of compost and ¼ cup of molasses.
3. Let the mixture brew for 24 hours.
4. Strain and use immediately.
Fungal Compost Tea Compost
1. Fill a 5-gallon bucket with water.
2. Add one shovel full of compost and ¼ cup of molasses.
3. Let the mixture brew for 5-7 days.
4. Strain and use immediately.

Supercharged Compost Tea uses a variety of nutrient-rich ingredients to create a potent brew that can help boost the growth and yields of your cannabis plants. Bacterial Compost Tea is a simple recipe that uses only compost and molasses to promote the growth of beneficial bacteria. Fungal Compost Tea takes longer to brew, but can help promote the growth of beneficial fungi that can help your cannabis plants absorb nutrients more efficiently.

Experimenting with different compost tea recipes can help you find the perfect brew to suit your cannabis plants’ unique needs. By trying out different combinations of ingredients and brewing times, you can create a custom blend that will help your plants thrive.


In conclusion, compost tea is a fantastic organic and eco-friendly way to enrich the soil and improve the quality, yield, and overall health of cannabis plants. By brewing compost tea at home, you can create a nutrient-rich solution that is free of harmful chemicals and can boost soil fertility and microbial activity.

When using compost tea, diluting it is important to avoid over-fertilizing and causing harm to your plants. The three methods of using compost tea that we discussed – diluting and watering the plants, foliar spraying, and soil drenching – are all effective, depending on your goals and plant needs.

It is essential to use high-quality compost and ingredients to make the most potent and effective compost tea. Avoid over-brewing or contamination, which can result in a harmful solution. Experimenting with different compost tea recipes can also be fun and allows you to tailor the tea to your specific plants and needs.

Overall, compost tea is a cost-effective and sustainable solution that can greatly benefit cannabis plants. By following the steps and tips we’ve outlined in this article, you can create a healthy and productive environment for your plants without relying on synthetic fertilizers and chemicals. Give it a try and see the difference for yourself!

Frequently Asked Questions

What is the ideal brewing time for compost tea?

The ideal brewing time for compost tea is between 24 to 48 hours. Any longer than that, and the tea may become anaerobic and harmful to your plants.

How often should I apply compost tea to my cannabis plants?

You can apply compost tea to your cannabis plants once a week during the vegetative stage and every other week during the flowering stage.

Can I use compost tea on other types of plants?

Yes, absolutely! Compost tea is a great fertilizer for all types of plants, both indoor and outdoor.

Can I use tap water to make compost tea?

Yes, you can use tap water to make compost tea. However, it’s recommended to use filtered water to avoid chlorine or other harmful chemicals.

Can I use store-bought compost to make compost tea?

Yes, you can use store-bought compost to make compost tea. Just make sure it’s organic and free of any harmful chemicals or additives.

How long can I store compost tea?

Compost tea can be stored for up to 5 days in a sealed container in the refrigerator. After 5 days, it’s recommended to use or discard the solution.

Can I add other nutrients to my compost tea?

Yes, you can add other nutrients such as molasses or seaweed extract to your compost tea to enhance its nutrient content. However, be careful not to overdo it and follow the recommended guidelines.

What is the recommended dilution ratio for compost tea?

The recommended dilution ratio for compost tea is 1:10, one part compost tea to 10 parts water.

How often should I clean my compost tea brewing equipment?

You should clean your compost tea brewing equipment after every use to prevent contamination and ensure the quality of your compost tea.

Can I use compost tea as a foliar spray?

Yes, you can use compost tea as a foliar spray to improve nutrient absorption and strengthen the overall health of your cannabis plants.


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