Compost Tea Stinks: The Science Behind Why

Composting is a great way to turn food scraps and yard waste into nutrient-rich soil. However, some gardeners have encountered an unpleasant problem when using compost tea: the strong odor. In this article, we will explore the science behind why compost tea stinks and what you can do about it.

What is Compost Tea?

Compost tea is a liquid fertilizer that is made by steeping compost in water. The mixture is aerated to promote the growth of beneficial microorganisms, which can improve soil health and plant growth. Compost tea can be used as a foliar spray or poured directly onto the soil.

Why Does Compost Tea Stink?

The strong odor of compost tea comes from the anaerobic bacteria that can grow in the tea if it is not properly aerated. Anaerobic bacteria thrive in environments without oxygen and produce foul-smelling gases like hydrogen sulfide and ammonia.

In addition to anaerobic bacteria, other factors that can contribute to the smell of compost tea include the type of compost used, the temperature of the tea, and the length of time it is steeped.

How to Prevent Smelly Compost Tea

Fortunately, there are several things you can do to prevent your compost tea from becoming smelly:

• Aerate the compost tea regularly to promote the growth of aerobic microorganisms
• Use high-quality compost that has been properly aged
• Keep the temperature of the tea between 60 and 80 degrees Fahrenheit
• Steep the tea for no longer than 36 hours

By following these guidelines, you can ensure that your compost tea stays fresh and free of unpleasant odors.

What If Your Compost Tea Already Stinks?

If your compost tea has already developed a strong odor, don't worry – it can still be salvaged. One option is to dilute the tea with water to reduce the concentration of smelly compounds. Another option is to add a small amount of molasses to the tea, which can stimulate the growth of beneficial bacteria and help to overpower the bad smells.

Compost tea is a powerful tool for gardeners looking to improve their soil health, but it can be unpleasant if it develops a strong odor. By following best practices for aeration, compost quality, temperature, and steeping time, you can prevent your compost tea from becoming smelly. And if it does develop an odor, there are simple solutions to get it back on track.

A high-quality compost bin is essential for making good compost tea.

Proper steeping time is critical for preventing smelly compost tea.

Regular aeration can help prevent anaerobic bacteria from taking over your compost tea.

compost, gardening, soil health, fertilizer, microorganisms