Hot Composting: How to Make Compost

Hot composting is a process of composting organic material in a way that creates high temperatures, typically between 120-160°F (49-71°C). This high temperature accelerates the decomposition process and results in the creation of nutrient-rich soil amendment in a matter of weeks rather than months or years.

Hot composting requires a balance of carbon-rich materials, such as dry leaves, straw, or sawdust, and nitrogen-rich materials, such as food scraps, grass clippings, or manure. These materials are layered in a bin or pile and kept moist. As the microorganisms that break down the organic matter consume oxygen, the compost pile heats up, to store the compost you need compost bin. The heat, in turn, accelerates the decomposition process, killing weed seeds, pathogens, and other harmful organisms.

Items That Can Be Hot Composted


Here are some items that can be hot composted:

  1. Fruit and vegetable scraps
  2. Coffee grounds and tea leaves
  3. Grass clippings and yard waste
  4. Leaves and twigs
  5. Manure from herbivores (such as cows, horses, and rabbits)
  6. Straw and hay
  7. Shredded paper and cardboard
  8. Eggshells (crushed)
  9. Nut shells (crushed)
  10. Cotton and wool rags

It’s important to note that certain items should not be hot composted, such as meat, dairy, and oily foods, as these can attract pests and slow down the composting process. Additionally, items treated with pesticides or chemicals should not be composted, as these can contaminate the final product.

Maintaining a Hot Compost Pile

Maintaining a hot compost pile requires attention and effort, but the result is nutrient-rich compost that can be used in your garden. Here are some tips for maintaining a hot compost pile:

  1. Keep the pile moist: A hot compost pile needs to be kept moist, but not too wet. If the pile becomes too dry, it can slow down the decomposition process. If it becomes too wet, it can become waterlogged and anaerobic. Aim for a moisture level similar to a damp sponge.
  2. Turn the pile regularly: To maintain high temperatures, the compost pile needs to be turned regularly. This allows oxygen to flow through the pile, providing the microorganisms with the oxygen they need to break down the organic matter. Turning the pile also ensures that all the materials are evenly mixed, which helps with decomposition.
  3. Add nitrogen-rich materials: Nitrogen is essential for the microorganisms that break down organic matter, so make sure to add nitrogen-rich materials to the pile regularly. These can include food scraps, grass clippings, and manure.
  4. Add carbon-rich materials: Carbon provides structure to the compost pile, so make sure to add carbon-rich materials such as dry leaves, straw, or sawdust. These materials also help to balance the moisture level in the pile.
  5. Monitor the temperature: Use a thermometer to monitor the temperature of the pile regularly. The ideal temperature for a hot compost pile is between 120-160°F (49-71°C). If the temperature drops too low, turn the pile and add more nitrogen-rich materials. If the temperature gets too high, add more carbon-rich materials or water to bring it back down.

By following these tips, you can maintain a healthy and productive hot compost pile that will provide your garden with nutrient-rich soil amendment.


Hot composting is a fantastic way to turn organic waste into nutrient-rich soil amendment that can benefit your garden. By following the tips for maintaining a hot compost pile, you can create a high-temperature environment that accelerates the decomposition process and produces compost in a matter of weeks. Remember to add a balance of carbon-rich and nitrogen-rich materials, keep the pile moist, turn it regularly, and monitor the temperature to ensure that it stays in the ideal range. With a little effort and attention, you can create a thriving hot compost pile that will benefit your garden for years to come.

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