Start with a bin, brown and green materials, and moisture

You can start composting with almost no equipment. The simplest method is a pile in a corner of your yard—no bin required. If you want to contain it, a plastic storage bin with holes drilled in the bottom works. If you want something purpose-built, you can buy a compost bin (ranging from $30 to $300), but it is not necessary to begin.

The core of composting is mixing two types of material: brown materials (dry leaves, shredded paper, cardboard, straw) and green materials (grass clippings, vegetable scraps, coffee grounds, plant trimmings). Layer them roughly equally by volume, keep the pile as moist as a wrung-out sponge, and turn it occasionally. Microbes and insects break down the material into dark, crumbly compost in anywhere from two months to a year, depending on how often you turn it and how warm your climate is.

Key Takeaways

  • You need brown materials (leaves, paper), green materials (food scraps, grass), and moisture—a bin is optional.
  • Layer browns and greens in roughly equal amounts and keep the pile as moist as a wrung-out sponge.
  • Turning the pile every week or two speeds decomposition; leaving it alone takes longer but requires no work.
  • Do not compost meat, dairy, oils, or diseased plants; these attract pests or spread disease.
  • Finished compost is dark, crumbly, and smells earthy; use it in gardens, potted plants, or lawn.

Choosing where to put your compost pile

Place your pile or bin in a spot that gets at least a few hours of sunlight and has decent drainage. A corner of the yard away from the house is ideal—not because compost smells bad when done right, but because it keeps rodents and insects away from your living space. If you have a small yard or live in an apartment, a sealed bin on a balcony or patio works, though it will decompose more slowly without heat and airflow.

Make sure the ground beneath is accessible. If you are using a bin with a door at the bottom (which makes harvesting easier), you need room to pull finished compost out. If you are making a pile, you need space to turn it with a pitchfork or shovel. Avoid placing compost directly against a wooden fence or shed, as the moisture can rot the wood over time.

What to put in and what to leave out

Safe to compost: vegetable and fruit scraps, coffee grounds and tea bags, grass clippings, leaves, shredded paper and cardboard, straw, wood chips, plant trimmings, and crushed eggshells. These materials break down and add nutrients.

Do not compost: meat, fish, bones, dairy, oils, fats, diseased plants, weeds with seeds, pet waste, or glossy paper. Meat and dairy attract rats and raccoons. Oils slow decomposition. Diseased plants and seeded weeds spread problems to your garden. Pet waste can harbor pathogens.

Cooked food scraps are technically safe but attract pests more readily than raw scraps, so many people avoid them. If you do add cooked food, bury it deep in the pile and turn frequently. Citrus peels, onions, and garlic break down fine but can slow the process slightly—use them in moderation.

Building and maintaining your pile

Start by laying down a 4- to 6-inch layer of brown material (leaves, shredded paper, straw) directly on the ground. This creates airflow underneath. Add a 4- to 6-inch layer of green material on top. Repeat until your pile is at least 3 feet tall and 3 feet wide—smaller piles decompose more slowly because they do not retain heat as well. Water each layer as you build so the whole pile is moist but not soggy.

Once your pile is built, keep it moist. Check it weekly by squeezing a handful: if water drips out, it is too wet; if nothing comes out, it is too dry. Aim for the consistency of a wrung-out sponge. If it smells like ammonia, it is too wet or has too many greens—add brown material and turn it. If it is not heating up or breaking down, it may be too dry or too small.

Turning the pile speeds decomposition. Use a pitchfork to move material from the outside of the pile to the center, where it is hottest. Turn every week or two if you want finished compost in 2 to 3 months. If you turn less often or not at all, decomposition takes 6 to 12 months but requires no labor. Both methods work.

Recognizing finished compost

Finished compost is dark brown or black, crumbly, and smells earthy—like forest soil. You should not be able to identify the original materials. If you still see leaves, food scraps, or cardboard, it is not ready; let it sit longer or turn it more often.

You can use finished compost as soon as it reaches this stage. Mix it into garden beds, use it as a top dressing on lawns, or blend it into potting soil for containers. There is no harm in using it slightly early if some material is still partially broken down; it will finish decomposing in the soil.

Troubleshooting common problems

Pile is not heating up: It is too small, too dry, or has too many browns. Add more green material, water it, and turn it. A working pile should feel warm to the touch in the center.

Smell like ammonia or rotten eggs: Too many greens or too wet. Add brown material (leaves, shredded paper), spread the pile out to dry slightly, and turn it thoroughly.

Rodents or insects in the pile: You likely added meat, dairy, or cooked food. Stop adding those materials. If the problem persists, bury food scraps deeper in the pile and turn more frequently to keep the center hot.

Pile is soggy and not breaking down: Drainage is poor. Turn the pile to add air, and consider moving it to a spot with better drainage or raising it on a pallet so water can drain underneath.

Compost bins and containers

A straightforward plastic storage bin costs $20 to $50 and works well for small-scale composting. Drill holes in the bottom and sides for airflow, fill it with layers of brown and green, and keep it moist. When it is full, stop adding material and let it finish decomposing while you start a second bin.

Purpose-built compost bins range from $30 (basic plastic) to $300 (wood or metal). Tumblers (rotating drums) speed decomposition because turning is built in, but they cost more and work best if you have a steady supply of material. Three-bin systems let you compost in one bin while the others finish and cure, but they take up more space.

For apartment dwellers, vermicomposting (composting with worms in a small bin indoors) is an option, though it requires more attention and a separate setup. A standard outdoor pile or bin is simpler if you have any outdoor space at all.

Frequently Asked Questions

How long does it take to get finished compost?

If you turn the pile weekly and maintain good moisture and material balance, you can have finished compost in 2 to 3 months. If you turn less often or not at all, expect 6 to 12 months. Temperature matters too—warm climates decompose faster than cold ones.

Can I compost in winter?

Yes, but decomposition slows significantly in cold weather. A pile will still break down, just more slowly. In very cold climates, you may want to keep adding material through fall and let it finish in spring and summer.

Do I need to add anything to speed up composting?

No. Compost happens naturally with the right mix of browns, greens, moisture, and air. Commercial compost starters and accelerators are not necessary. Turning the pile and maintaining moisture are the only real speed-ups.

What if I do not have a yard?

Vermicomposting (indoor worm bins) works in apartments and takes up minimal space. You can also check whether your city has a compost drop-off program where you can bring finished material to a central facility.

Can I use compost from diseased plants in my garden?

Not safely. Pathogens from diseased plants can survive the composting process and spread disease to new plants. Bag diseased material and put it in the trash, or burn it if your area allows.