Do Compost Accelerators Work? Unveiling The Truth Behind Faster Composting

Composting is an excellent way to reduce waste and create nutrient-rich soil for gardening. As a compost enthusiast, you may have come across various products marketed as “compost accelerators” that claim to speed up the composting process.

But do these accelerators really work? In this article, we will explore the concept of compost accelerators, their effectiveness, and natural methods to accelerate composting.

What are compost accelerators?

Compost accelerators, also known as compost activators or compost starters, are products designed to enhance the decomposition of organic materials in the compost pile. They contain a blend of microorganisms, such as bacteria, fungi, and enzymes, that aid in breaking down organic matter more efficiently.

Composting plays a vital role in reducing landfill waste and returning nutrients to the soil. It involves the decomposition of organic materials, such as kitchen scraps, yard waste, and plant matter, into a dark, crumbly substance called compost. Compost is rich in essential nutrients and can improve soil structure, water retention, and overall plant health.

How Compost Accelerators Work

Compost accelerators work by introducing a concentrated population of beneficial microorganisms to the compost pile. These microorganisms are responsible for the decomposition process, breaking down complex organic compounds into simpler forms that plants can readily absorb. They work synergistically to break down cellulose, lignin, and other hard-to-decompose materials.

There are different types of compost accelerators available in the market, including powdered, liquid, and granular forms. Some accelerators are specifically formulated for particular composting methods, such as hot composting or vermicomposting. It’s essential to choose an accelerator that aligns with your composting goals and methods.

The effectiveness of compost accelerators depends on several factors. The carbon-to-nitrogen ratio (C/N ratio) of the compost pile, moisture levels, aeration, and temperature all influence the microbial activity. A well-balanced compost pile with the right blend of ingredients and optimal conditions provides an ideal environment for the microorganisms to thrive and accelerate the decomposition process.

How Fast Does Compost Accelerator Work

The speed at which compost accelerators work can vary depending on multiple factors. On average, composting with accelerators can expedite the decomposition process by 30% to 50% compared to traditional composting methods. However, it’s important to note that composting is a natural process that still requires time.

The time it takes to compost with accelerators depends on variables such as the initial composition of the pile, the size of the organic materials, and the frequency of turning or aerating the pile. With regular turning and adequate moisture and aeration, composting with accelerators can yield usable compost within a few months.

When comparing the composting times with and without accelerators, it’s clear that accelerators significantly reduce the overall composting duration. However, it’s crucial to strike a balance between speedy composting and the quality of the final product. Proper decomposition and maturity of the compost ensure the elimination of pathogens, weed seeds, and other undesirable elements.

How to Accelerate Compost Naturally

If you prefer a natural approach to accelerate your composting process, several techniques can help you achieve faster results.

  1. Proper composting techniques: Begin by creating a well-balanced compost pile with a mix of “browns” (carbon-rich materials like leaves or straw) and “greens” (nitrogen-rich materials like vegetable scraps or grass clippings). Layering the materials, maintaining moisture levels, and regular turning or aerating the pile will enhance the decomposition process.
  2. Natural ingredients for accelerating compost: Some natural ingredients can act as compost accelerators. For instance, adding high-nitrogen materials like coffee grounds or manure can speed up the breakdown of organic matter. Similarly, crushed eggshells, which are rich in calcium, can aid in balancing the pH levels of the compost.
  3. Maintaining optimal conditions for composting: Ensure the compost pile remains moist but not overly wet. Monitor the temperature regularly, aiming for a range of 120°F to 160°F (49°C to 71°C), as higher temperatures can promote faster decomposition. Additionally, providing proper aeration through turning or using a compost aerator will create an oxygen-rich environment for the microorganisms.


Compost accelerators can be valuable tools for expediting the composting process and obtaining nutrient-rich compost more quickly. By harnessing the power of microorganisms, these accelerators enhance the breakdown of organic materials, reducing composting times and providing rich, fertile soil for your plants.

While compost accelerators are effective, it’s essential to remember that composting is a natural process that still requires time and proper management. By adopting natural composting techniques and maintaining optimal conditions, you can achieve accelerated composting without the need for additional products.

Composting is not only beneficial for your garden but also contributes to a more sustainable future. By diverting organic waste from landfills and creating nutrient-rich soil, you actively participate in reducing environmental impact and fostering a healthier ecosystem.


Q: Are compost accelerators safe for the environment?
A: Yes, compost accelerators are generally safe for the environment. They contain natural ingredients and microorganisms that aid in the decomposition process. However, it’s important to choose compost accelerators that are certified organic and free from harmful chemicals.

Q: Can I use compost accelerators for vermicomposting (worm composting)?
A: Yes, some compost accelerators are specifically formulated for vermicomposting. These products provide a suitable environment for the worms and enhance the breakdown of organic matter in worm bins.

Q: Do I need to use compost accelerators for successful composting?
A: No, compost accelerators are not necessary for successful composting. With the right combination of organic materials, proper moisture levels, and regular turning or aerating, you can achieve effective composting without the use of accelerators.

Q: Can I use homemade compost as a compost accelerator?
A: Yes, you can use homemade compost as a compost accelerator. Mature compost contains a diverse population of microorganisms that can help kickstart the decomposition process in a new compost pile.

Q: Are there any alternatives to compost accelerators?
A: Yes, there are natural alternatives to compost accelerators. Adding high-nitrogen materials like grass clippings or coffee grounds, or incorporating beneficial microorganisms from healthy soil or finished compost, can help accelerate composting naturally.