What are the best practices for indoor composting?

November 27, 2023

Composting is the transformative process where organic materials, such as food scraps and garden waste, are turned into nutrient-rich soil. The practice allows individuals to utilize waste, reducing the need for landfill sites, and it provides a beneficial soil amendment for gardening. But what if you don’t have outdoor space for a compost pile? Indoor composting is a viable solution that more people are beginning to embrace. In this article, we will delve into the best practices for indoor composting that can turn your waste into black gold.

Choosing the Right Container for Indoor Composting

Before you begin the composting process, it is essential to select an appropriate container. The choice of bin can significantly impact the success of your indoor composting endeavor. You will want a container that is large enough to hold your compost but not so large that it becomes an obstruction in your home.

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Look for a bin with a secure lid to prevent any unpleasant odors from escaping, and make sure it has ventilation holes for airflow. Check if it has a bottom tray to collect the "compost tea", a nutrient-rich liquid that can be diluted and used as a plant feed.

It is not necessary to purchase a specialized composter; a simple plastic tote or bucket can be just as effective. Just ensure it has the features mentioned above. Finally, remember that your bin should be easy to access so you can readily add waste and turn the compost.

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Preparing Your Compost Pile

To start your indoor compost pile, you need a mix of brown and green materials. Brown materials include items like dried leaves, newspaper, cardboard, and straw, which provide carbon. Green materials, such as vegetable scraps, coffee grounds, and grass clippings, supply nitrogen.

Begin with a layer of brown material at the bottom of your bin, followed by a layer of green material. Keep layering in this manner, maintaining a 2:1 ratio of brown to green. This balance is vital as too much green material can lead to a smelly, slimy compost, while excess brown material slows down the composting process.

Ensure the materials are chopped or shredded into small pieces to facilitate quicker decomposition. You may also add a bit of garden soil or finished compost to introduce beneficial microorganisms that will speed up the composting process.

Maintaining the Compost Bin

Proper maintenance of your compost bin is crucial for successful indoor composting. Regularly turning your compost pile is necessary for introducing oxygen, which aids the decomposition process. Use a compost turner or a simple garden fork to do this.

Monitor the moisture level of your compost. It should be as wet as a wrung-out sponge. If it’s too dry, add some water. If it’s too wet, add more brown material to absorb the excess moisture.

Check for a temperature increase in the compost pile; this is a sign that the composting process is working. However, indoor compost piles may not heat up as much as outdoor ones due to their smaller size.

Composting with Worms

Vermicomposting, or composting with worms, is another practical method for indoor composting. Red wiggler worms are the best choice for this as they thrive in compost conditions and are efficient composters.

To compost with worms, you will need a worm bin. You can purchase a ready-made one or create your own from a plastic container. Add bedding made from shredded newspaper and a bit of garden soil or finished compost.

Provide your worms with food scraps, avoiding meat, dairy, oily foods, and citrus fruits. These items can create a hostile environment for the worms. A pound of worms can process half a pound of food waste in a day.

Utilizing the Finished Compost

After a few weeks or months, depending on your composting method and maintenance, your compost should be ready. It will have a dark, crumbly appearance and a fresh, earthy smell.

You can use this compost to enrich the soil in your houseplants or garden. Add it to the top of your plant pots or mix it into the soil when planting new plants. The compost will provide a slow-release of nutrients that will help your plants thrive.

Indoor composting is not only a sustainable way to manage waste, but it also provides an inexpensive and effective soil amendment for your plants. With these best practices, you can ensure that your indoor composting endeavor will be a success.

Innovative Indoor Composting Methods

Exploring innovative methods can help you create the optimal environment for your compost indoors. Let’s look at two popular techniques widely adopted in indoor composting: the bokashi method and aerobic composting.

The bokashi method is a Japanese technique that involves fermenting organic waste in a closed system with the use of a specific group of microorganisms. It is an excellent option for indoor composting as it operates without smell, and it can process all food waste, including meat and dairy, which are commonly not suitable for traditional compost piles. To start, layer your food scraps and bokashi bran in a specialized bokashi bin. Seal the bin tightly after each addition of waste, and drain the bokashi juice regularly. In two weeks, the organic waste would have fermented into a pre-compost that you can move to your compost bin or bury directly in the garden.

Aerobic composting, on the other hand, is the process of decomposing organic matter using air. This method requires regular turning of the compost pile to ensure adequate aeration. You can facilitate this process using a compost turner or a simple garden fork. Start with a layer of brown matter at the bottom of your compost bin. Add a layer of green matter, and then another layer of brown matter. Continue to layer soil or finished compost, ensuring to keep the compost moist, not wet. Within a few weeks, you will have nutrient-rich compost ready for use.

Worm Composter Maintenance and Troubleshooting

Any successful worm composting setup requires proper maintenance and troubleshooting. Keep an eye on the moisture content in your worm composter. It should feel like a wrung-out sponge – moist but not dripping wet. If it’s too dry, add some water or green materials. If too wet, add shredded newspaper or another brown matter to soak up the excess moisture.

Temperature plays a crucial role in worm composting. The ideal temperature range for Red wiggler worms is between 55°F and 77°F. If the compost bin becomes too hot or cold, the worms could die. Keep your worm bin in a spot that maintains this ideal temperature range.

If your worm composter is producing a foul smell, it may be due to overfeeding or a lack of air. Try reducing the food scraps you’re adding and turning the compost more often to introduce air.


Indoor composting is a great way to reduce food waste while enriching the soil for your indoor or outdoor plants. By choosing the right compost bin, balancing green and brown materials, maintaining the compost bin correctly, and considering options like aerobic composting, the bokashi method, and worm composting, you can compost indoors effectively. Remember, the key lies in consistent care and understanding the valuable process of turning waste into nutrient-rich compost. Whether you’re a veteran composter or a beginner, these best practices will help you create thriving compost at home, irrespective of the space constraints.