Breaking Down At-Home Composting

Composting is one of the easiest ways to implement green practices in your home, and starting one only takes a few simple steps and a little knowledge on the process. 

What Goes into a Compost?

There are four components required for a functional compost:

• “Browns” that help aerate the mixture and filter drainage
  Examples: twigs, dry leaves, untreated cardboard
• “Greens” that promote microbe growth for decomposition and heat generation
  Examples: fruit and vegetable scraps, fresh plant clippings, coffee grounds
• Water 
• Oxygen

The U.S. Environmental Protection Agency (EPA) advises not to add materials like meat, fish, bones, dairy products, fats/oils, cooked food and compostable bags and foodservice ware, as these can attract animals and/or won’t fully decompose. They also recommend avoiding any processed materials such as herbicide-treated plants, treated wood, pet waste/cat litter, dryer lint, glossy paper and product stickers.  

Getting the Proper Bin

At-home composts can be any size, whether you’re looking for a small kitchen compost for quick discarding or a large outdoor compost for easier gardening access. 

Regardless of size, your container needs to be sturdy and allow for drainage. A popular method is drilling holes in the bottom of containers while ensuring the lid is strong enough to keep pests, like birds and rats, out. Some recycled bin options are plastic trash cans, paint buckets, durable Tupperware and plastic storage containers. 

Bins constructed specifically for composting are also available for purchase at most major home-improvement stores, with prices ranging from about $20 to upwards of $1,000 depending on size and features. 

A Step-By-Step Guide 

Step 1: Assign an outdoor location

Place your compost near a water source and where there is proper drainage.

Step 2: Assemble your ingredients

Break down larger pieces before assembling to expedite decomposition. Place your browns on the bottom, followed by your greens. Layer some more browns on the top to finish the pile. 

Add water to moisten the pile. Ensure the pile is not soaked, but rather mildly damp. The EPA says its consistency should resemble a “wrung-out sponge.”

Step 3: Maintain your compost

Turn your pile every once in a while to promote air circulation and moisture distribution. If your pile is too wet, add more browns. If your pile is too dry, add more water. If your pile is not rising in temperature, add more greens. 

Step 4: Cure and harvest

Once your compost has no visible food scraps and is not rising in temperature, you’re almost ready to harvest. The EPA recommends that you allow your mixture to cure for at least four weeks. Do not add new material during this time, but continue to add water and turn the pile as needed. The pile is cured once it feels and smells like fresh, damp soil. 

Finally, sift out any leftover bulk material, and you’re now ready to add your mixture to your plants or garden! You can reuse the bulk material to continue your compost, if you so choose, or simply discard them. Composts can last years if consistently maintained.

---

What is Composting?

The U.S. Department of Agriculture (USDA) defines composting as “the process of recycling organic materials into an amendment that can be used to enrich soil and plants.” According to the USDA website, composting at home can help mitigate the greenhouse gas emissions from food and yard waste going into landfills, while producing a naturally effective alternative to chemical fertilizers. Learn more at usda.gov. — Ku‘u Home Staff

---

This story appears in the March/April 2026 print issue of Ku‘u Home magazine.