You can make compost in your yard or indoors with kitchen scraps and yard waste

Composting at home means collecting food scraps, leaves, grass clippings, and other organic material, then letting them break down into dark, crumbly soil you can use in gardens or potted plants. You do not need special equipment or chemicals—the process happens naturally when you pile materials in the right way and let microorganisms and insects do the work. Most home composters finish a batch in three to six months, though the timeline depends on what you add, how often you turn the pile, and the temperature where you live.

The basic idea is straightforward: brown materials (dry leaves, cardboard, straw) and green materials (grass clippings, vegetable scraps, coffee grounds) break down when they are stacked together and exposed to air and moisture. You can start composting with almost no money—a corner of your yard and a bin made from wooden pallets works fine—or you can buy a ready-made bin. The choice depends on your space, how much waste you generate, and whether you want the process to be fast or low-maintenance.

Key Takeaways

  • Home composting requires a mix of brown materials (leaves, cardboard) and green materials (food scraps, grass) in roughly equal amounts by volume.
  • You can compost in an open pile, a wooden bin, a plastic tumbler, or an indoor container, depending on your space and how quickly you want finished compost.
  • Keep the pile as moist as a wrung-out sponge and turn it every week or two if you want compost in three months, or leave it undisturbed for six to twelve months for slower composting.
  • Never compost meat, dairy, oils, pet waste, or diseased plants, as these either attract pests or introduce harmful organisms.
  • Finished compost is ready to use when it is dark brown, crumbly, and smells like soil rather than rotting food.

What materials you can and cannot compost

Safe to compost: vegetable and fruit scraps, coffee grounds and tea bags, crushed eggshells, grass clippings, leaves, shredded newspaper and cardboard, straw, wood chips, and plant trimmings. Meat, fish, bones, dairy products, oils, fats, pet waste, diseased plants, and weeds with seeds should never go in your pile. Meat and dairy attract rats and raccoons. Pet waste can harbor parasites harmful to humans. Diseased plants spread the infection to your garden when you use the finished compost.

Cooked food scraps are safe to compost as long as they contain no meat, dairy, or oil. Bread, pasta, rice, and vegetable-based leftovers break down without problems. Citrus peels and onion skins compost fine, though some people avoid large amounts because they can slow decomposition slightly. If you are unsure about something, the safest rule is: if it came from a plant and has no oil or animal product on it, it can go in.

Three ways to set up a home compost system

Open pile or bin: Stack materials directly on the ground or in a wooden or plastic bin with no lid. This is the cheapest option and works well if you have space and do not mind the appearance. Air flows freely, which speeds decomposition, but you will need to turn the pile regularly (every week or two) to keep it heating up. Open piles also attract more insects and can smell if you add too many green materials at once.

Tumbler or drum: A barrel or bin mounted on a stand or axle that you rotate by hand. Tumblers heat up faster and finish compost in eight to twelve weeks because turning is straightforward—you just spin the drum every few days. They take up less space and keep pests out better than open piles. The trade-off is cost (usually $100 to $300) and the fact that you cannot add new material once you start a batch, so you need two tumblers if you want continuous compost.

Indoor or vermicomposting: A small bin kept indoors or in a garage, using red worms to break down scraps. Worm bins work in apartments or homes with no yard space and produce finished compost in two to six months. They require more attention to moisture and temperature, and you need to buy starter worms (usually $30 to $50). The finished product is very rich and good for houseplants and small gardens.

The right balance of brown and green materials

Aim for roughly equal volumes of brown (carbon-rich) and green (nitrogen-rich) materials. In practice, this means for every bucket of grass clippings or food scraps you add, add a bucket of shredded leaves or cardboard. If your pile smells like ammonia or rotten eggs, you have too much green material—add more brown. If it is not heating up and decomposing, you likely have too much brown or not enough moisture.

Chop or shred materials into smaller pieces before adding them—smaller pieces have more surface area and break down faster. Whole leaves can mat down and block air flow, so run them through a mulcher or mow over them with a lawn mower. Cardboard should be torn into strips or small squares. The finer you chop, the faster the process, though even large pieces will eventually decompose.

How to maintain your pile for faster or slower composting

For fast compost (three to six months): Turn the pile every seven to ten days using a pitchfork or shovel, moving material from the outside to the center. Keep it as moist as a wrung-out sponge—wet enough that water drips out if you squeeze it, but not waterlogged. In warm weather, the pile will heat up to 130 to 150 degrees Fahrenheit in the center, which speeds decomposition and kills weed seeds and pathogens. Check moisture after rain or if the pile stops steaming.

For slow compost (six to twelve months): Leave the pile alone and do not turn it. Just add materials as you have them and let time do the work. This method requires almost no effort and works fine if you are not in a hurry. The pile will not heat up as much, so it takes longer, but the end result is the same. This approach is better if you have limited space or do not want to spend time turning.

Temperature matters: composting slows dramatically in winter in cold climates. If you live where temperatures drop below freezing, your pile will mostly pause until spring. In warm climates, composting can happen year-round. Covering your pile with a tarp helps retain heat and moisture in winter and prevents it from getting waterlogged in heavy rain.

Recognizing finished compost and using it

Finished compost is dark brown or black, crumbly, and smells like rich soil or forest floor. You should not be able to recognize individual materials—everything should look uniform. If you still see chunks of leaves or cardboard, let it sit longer. Finished compost should feel moist but not wet, and it should not smell like rotting food or ammonia.

Use finished compost by mixing it into garden beds (two to four inches worked into the top six inches of soil), topping potted plants, or spreading it as mulch around trees and shrubs. It improves soil structure, adds nutrients, and helps soil hold water. You can also brew "compost tea" by soaking finished compost in water for a day or two and using the liquid to water plants, though this is optional.

Common problems and how to fix them

Pile smells bad: A rotten-egg or ammonia smell means too much green material or not enough air. Turn the pile and add brown material (leaves, cardboard). If it is waterlogged, turn it and let it dry out slightly.

Pile is not heating up: Either too much brown material, not enough moisture, or materials are too large. Add green material, water it, and chop larger pieces smaller. It may also just be cold outside—composting slows in winter.

Pests in the pile: Rats, raccoons, and flies are attracted to meat, dairy, and oils. Never add these. If pests are already present, cover food scraps with a layer of brown material and turn the pile more often. A closed bin or tumbler keeps pests out better than an open pile.

Pile is too wet: Add brown material and turn to increase air flow. If it stays soggy, you may have poor drainage—try moving the pile to higher ground or adding a layer of sticks at the bottom for air flow.

When to call a professional or get help

Composting is a process you manage yourself—there is no professional service involved. However, if you are unsure whether your finished compost is ready or whether it is safe to use on vegetables, your local cooperative extension office can answer questions for free. Many areas also have community gardens or composting groups that share information and sometimes give away finished compost or starter materials.

If you want to compost but do not have space or time, some cities and towns offer municipal composting programs where you drop off food scraps and yard waste at a collection site. Check your city or county website to see if this option is available where you live.

Frequently Asked Questions

Can I compost in an apartment or small space?

Yes, with a worm bin or bokashi bucket (a sealed container that ferments scraps). Both are small enough for a closet or under a sink and do not smell if maintained correctly. Worm bins take two to six months to produce finished compost; bokashi takes about two weeks to ferment scraps, which you then bury in soil or add to an outdoor pile to finish breaking down.

How long does it really take to get usable compost?

Three to six months if you turn the pile regularly and keep conditions right. Six to twelve months if you leave it alone. Worm bins and bokashi are faster (two to six weeks), but produce smaller amounts. Cold weather slows everything down—expect twice as long in winter.

Do I need to buy special equipment or starter cultures?

No. A pile on the ground or a bin made from wooden pallets works fine. Microorganisms and insects are already in your yard waste and soil, so you do not need to buy starter cultures. If you choose a worm bin, you do need to buy red worms (about $30 to $50), but that is a one-time cost.

Can I compost diseased plants or weeds?

Not diseased plants—the disease can survive and spread to your garden when you use the compost. Weeds with seeds should not go in unless your pile heats up to 130 degrees or higher, which kills seeds. If you are unsure, leave them out.

What if my compost smells terrible?

A rotten smell means too much green material, not enough air, or too much moisture. Turn the pile, add brown material like leaves or cardboard, and let it dry out slightly. The smell should improve within a few days. If it persists, you may have meat or dairy in the pile—remove it if you can find it.