How Long Does It Take To Make Compost? 7 Classic Fundamentals

Have you ever wondered how long does it take to make compost? Well, the answer may surprise you! In this article, we will explore the process of composting and discover just how much time is needed to transform your kitchen scraps and yard waste into nutrient-rich soil. Get ready to learn all about the magic of composting and find out how to create your very own black gold in no time!

How Long Does It Take To Make Compost?

Check Out Our Top Composting Product Picks On Amazon Here

Factors Affecting Compost Decomposition

When it comes to composting, there are several factors that can influence the decomposition process. By understanding these factors, you can optimize your composting system and produce high-quality compost more efficiently.


Temperature plays a crucial role in compost decomposition. Ideally, the temperature range for optimal decomposition is between 130 to 160 degrees Fahrenheit (54 to 71 degrees Celsius). At these temperatures, microorganisms responsible for breaking down organic matter thrive and work more efficiently. Cooler temperatures slow down the decomposition process, while higher temperatures can potentially kill off beneficial microorganisms.


Moisture is another important factor in composting. A sufficient level of moisture is necessary to keep the microorganisms alive and active. The ideal moisture content in a compost pile is around 40% to 60%. A compost pile that is too dry will have slow decomposition, while excess moisture can lead to anaerobic conditions, resulting in a smelly and ineffective composting process.


Oxygen is essential for aerobic decomposition, where microorganisms break down organic matter in the presence of oxygen. Adequate oxygen levels can be maintained by turning or aerating the compost pile regularly. Lack of oxygen can lead to anaerobic decomposition, which produces foul odors and slow decomposition.

C:N Ratio

The Carbon to Nitrogen ratio, often referred to as the C:N ratio, is the ratio of carbon-rich materials to nitrogen-rich materials in a compost pile. It is an important factor in determining the rate of decomposition. The recommended C:N ratio for composting is around 25 to 30 parts carbon to 1 part nitrogen. Too much carbon-rich material can slow down decomposition, while too much nitrogen-rich material can lead to a smelly pile.

Particle Size

The size of the organic material in a compost pile can also affect decomposition. Smaller particle sizes break down faster because they provide a larger surface area for microorganisms to work on. Chopping or shredding larger materials before composting can help expedite the decomposition process.

Turning Frequency

Regularly turning or aerating the compost pile is crucial for maintaining oxygen levels and promoting even decomposition throughout the pile. Turning the pile allows for better airflow and helps to distribute moisture and microorganisms evenly. Aim to turn your compost pile every week or two to ensure optimal decomposition.

Traditional Composting Methods

There are two main traditional composting methods: cold composting and hot composting. Both methods have their own advantages and can be utilized depending on your specific needs and circumstances.

Cold Composting

Cold composting is a slower and more hands-off approach to composting. It involves simply piling organic materials and allowing them to decompose naturally over an extended period of time. Cold composting is ideal for those who do not have a lot of time or energy to dedicate to the process. It is also a good option for composting kitchen scraps and yard waste on a small scale.

Hot Composting

Hot composting, on the other hand, is a more active and accelerated method of composting. It involves maintaining specific conditions to achieve higher temperatures, which speed up the decomposition process. Hot composting requires more effort and attention compared to cold composting but results in faster compost production. This method is suitable for those who generate larger amounts of organic waste or have a faster turnaround time for compost production.

Check Out Our Top Composting Product Picks On Amazon Here

Cold Composting

Process Overview

Cold composting is a simple and straightforward method. Organic materials such as kitchen scraps, yard waste, and leaves are piled together in a designated composting area. The materials are left to decompose naturally over time, relying on the activity of microorganisms in the environment to break them down.

Composting Time

Cold composting is a gradual process that can take several months to years, depending on the conditions and materials used. Generally, cold composting can take anywhere from 6 months to 2 years to produce a finished compost. The time frame can be influenced by factors such as the size of the pile, the types of materials included, and the environmental conditions.

Hot Composting

Process Overview

Hot composting involves more active management to achieve higher temperatures and faster decomposition. The compost pile needs to be built with a specific balance of carbon-rich and nitrogen-rich materials, typically in layers or in a well-mixed manner. It also requires regular turning or aerating to maintain oxygen levels and promote even decomposition.

Composting Time

Hot composting is a much faster process compared to cold composting. When properly managed, it can produce finished compost in as little as 1 to 3 months. However, the actual time may vary depending on factors such as the size of the pile, the materials used, and the environmental conditions. Monitoring temperature and turning the pile regularly can help accelerate the process.

How Long Does It Take To Make Compost?


Process Overview

Vermicomposting is a composting method that utilizes earthworms to break down organic matter. It involves creating a dedicated worm bin or vermicompost system where the worms feed on organic material provided. As they consume the organic matter, they excrete nutrient-rich castings that become compost.

Composting Time

Vermicomposting is typically a faster method of composting compared to both cold and hot composting. With the help of earthworms, the decomposition process is accelerated, and finished vermicompost can be obtained in as little as 2 to 6 months. However, factors such as the number of worms, feeding habits, and environmental conditions can affect the overall time required.

Bokashi Composting

Process Overview

Bokashi composting is a unique composting method that utilizes beneficial microorganisms to ferment organic matter. It involves the use of a special composting system known as a Bokashi bin. Organic waste is added to the bin, along with a bran-based mixture inoculated with effective microorganisms (EM). These microorganisms help to ferment the waste, resulting in a pre-compost material that can later be buried or added to a traditional compost pile.

Composting Time

The fermentation process in Bokashi composting typically takes around 2 weeks to a month, depending on the temperature and the effectiveness of the microorganisms. After fermentation, the pre-compost material needs to be buried or added to a traditional compost pile to undergo further decomposition, which can take several weeks to months. The final compost can be obtained within a few months to a year, depending on various factors.

How Long Does It Take To Make Compost?

Aerated Static Pile (ASP) Composting

Process Overview

Aerated Static Pile (ASP) composting is a controlled and efficient method that involves creating a compost pile stacked together with pipes or aeration systems. These systems deliver controlled amounts of air to the compost pile, ensuring a constant supply of oxygen for aerobic decomposition. ASP composting is commonly used for large-scale composting operations.

Composting Time

ASP composting is a relatively quick method of composting, especially when compared to cold composting. Depending on the materials used and the management of the process, ASP composting can produce finished compost within 2 to 6 months. The size of the compost pile, the balance of carbon and nitrogen, and regular turning or aeration can all impact the composting time.

Compost Accelerators and Enhancers


Compost accelerators and enhancers are products designed to speed up the composting process and improve the quality of the finished compost. These products typically contain beneficial bacteria, enzymes, or other active ingredients that help break down organic matter more efficiently. While they can be effective in enhancing compost decomposition, their actual impact may vary depending on factors such as the quality of the compost materials, environmental conditions, and the specific product used.

Composting Time

Compost accelerators and enhancers can potentially shorten the composting time. With the help of these products, the decomposition process can be accelerated by a few weeks or months. However, the actual time saved can vary depending on the specific product and the conditions in which the composting is done.

How Long Does It Take To Make Compost?

Composting Troubleshooting

Slow Composting

If your compost pile is decomposing slowly, it may be due to factors such as low temperatures, inadequate moisture, or an imbalanced C:N ratio. To speed up the process, consider adjusting the temperature by insulating the pile or using a hot composting method. Ensure proper moisture levels by adding water or covering the pile during rainy periods. It may also help to adjust the C:N ratio by adding more nitrogen-rich materials or carbon-rich materials as needed.

Smelly Compost

Foul odors from your compost pile can indicate anaerobic conditions caused by inadequate oxygen or excess moisture. To address this issue, turn the pile more frequently to improve airflow and introduce more oxygen. Make sure the pile is not excessively wet and consider adding more dry, carbon-rich materials to balance the moisture content.

Pests and Diseases

Compost piles can sometimes attract pests or become a breeding ground for harmful pathogens. To prevent pests, ensure that your compost pile is not a food source or shelter for animals by avoiding adding meat, dairy, or oily food waste. If you notice signs of pests or diseases, such as molds or unusual infestations, you can try turning the pile more frequently or adjusting the moisture and temperature conditions to discourage the growth of harmful organisms.

Inadequate Decomposition

If your compost is not fully decomposed and still contains visible organic materials, it may have been caused by an insufficient decomposition period or an imbalanced C:N ratio. Make sure to give your compost enough time to break down fully before using it. If the C:N ratio is imbalanced, adjust it by adding more carbon-rich or nitrogen-rich materials and turn the pile regularly to ensure uniform decomposition.

Utilizing Finished Compost

Maturing and Curing

Once your compost has fully decomposed, it is important to let it mature and cure before using it in your garden. This process allows any residual heat, microorganisms, or potential toxins to dissipate, ensuring a safe and stable product. Maturing and curing can take anywhere from a few weeks to several months, depending on the composting method and environmental conditions.

Application Methods

Finished compost can be utilized in various ways to enrich your garden and improve soil fertility. It can be applied as a top dressing, mixed into potting soil, or used as a component in homemade compost teas. Whatever application method you choose, make sure to incorporate the compost into the soil thoroughly for maximum effectiveness. Remember to always follow best practices for compost application to enhance plant growth and minimize the risk of nutrient imbalances.

Check Out Our Top Composting Product Picks On Amazon Here

Sharron Nixon

Hi there! I'm Sharron, the face behind Composting Guru. I'm passionate about helping you discover and unlock the earth's secret recipe - composting. With our curated content, expert advice, and top-tier tools, I'm here to guide you in mastering the art of composting. Whether you're searching for the perfect composter or seeking tips on creating nutrient-rich compost, you've come to the right place. Together, we'll transform your waste into garden gold. Join me on this journey as we dive deep into the world of composting and unlock its true potential. Let's make the Earth thrive with Composting Guru!

More to Explore

Should Compost Be Rained On?

Discover why rain is beneficial for composting and how it aids in the decomposition process. Learn about moisture levels, benefits of rainwater, drawbacks of excessive rain, and strategies to control moisture. Create nutrient-rich soil for your garden with the help of rainwater!