The fastest way to start composting is a plastic bin with drainage holes and a lid
A compost bin is a container that holds food scraps and yard waste while they break down into usable soil. You can buy one ready-made for $30 to $150, or build one yourself from a plastic storage bin, wooden pallets, or wire mesh for $10 to $40. The simplest approach is a plastic bin with a lid and drainage holes drilled into the bottom — it keeps pests out, holds moisture in, and takes up minimal space on a patio or in a garage.
What goes in matters more than what the bin is made of. Compost needs a mix of brown materials (dry leaves, shredded paper, cardboard) and green materials (food scraps, grass clippings, plant trimmings). The pile breaks down fastest when you keep it moist like a wrung-out sponge and turn it every week or two. A finished bin produces dark, crumbly compost in 2 to 6 months, depending on how often you turn it and how small you chop the materials going in.
Key Takeaways
- A plastic storage bin with drainage holes and a lid is the cheapest and easiest option for a beginner, costing $10 to $30 if you already have the bin.
- Compost needs roughly equal parts brown materials (leaves, paper) and green materials (food scraps, grass) to break down properly.
- The pile must stay as moist as a wrung-out sponge and be turned every 7 to 14 days for faster decomposition.
- Finished compost is ready to use when it looks dark and crumbly and no longer smells like rotting food.
Choose a bin style that fits your space and budget
A plastic storage bin is the easiest starting point. Buy a 20- to 30-gallon opaque bin with a tight-fitting lid, drill 8 to 12 holes in the bottom for drainage, and drill a few more around the sides near the top for air flow. This costs $15 to $30 and works on a balcony, in a garage, or under a sink. The downside is that you cannot turn the pile easily — you have to dump it out, mix it, and put it back.
Wooden pallet bins are larger and let you turn the pile in place. Stack four pallets into a square, find the corners with wire or bolts, and line the inside with cardboard or landscape fabric to slow moisture loss. This costs $0 to $20 if you find free pallets, takes up 3 by 3 feet of space, and works well in a yard. The wood rots over time and needs replacing every 3 to 5 years.
Wire mesh bins are open-sided cylinders made from chicken wire or hardware cloth, held together with zip ties or wire. They cost $10 to $25, are straightforward to turn (you lift the whole cylinder off the pile), and work fast because air flows through freely. They offer no protection from pests and dry out quickly in hot weather.
Tumbling bins are sealed drums mounted on a stand that you rotate by hand. They cost $80 to $150, turn the pile easily, and keep pests out completely. They work well if you have the budget and want finished compost in 4 to 8 weeks instead of months.
Layer brown and green materials in the right ratio
Compost works when you balance carbon-rich browns and nitrogen-rich greens. Browns include dry leaves, shredded newspaper, cardboard, straw, and wood chips. Greens include vegetable scraps, fruit peels, grass clippings, coffee grounds, and plant trimmings. Aim for roughly 3 parts brown to 1 part green by volume — if your pile smells like ammonia, add more brown; if it is not breaking down, add more green.
Start with a 4- to 6-inch layer of coarse brown material on the bottom (shredded leaves or straw work well) to create air pockets. Add a 2- to 3-inch layer of green material, then alternate layers of brown and green until the bin is full or you run out of material. Chop or shred everything into pieces smaller than 2 inches — smaller pieces break down faster. Wet each layer as you go so the whole pile feels like a wrung-out sponge.
Do not add meat, fish, dairy, oils, or pet waste — these attract pests and create odor. Avoid diseased plants and weeds with seeds. Shredded paper and cardboard are fine, but remove tape, plastic, and ink-heavy glossy pages first.
Keep the pile moist and turn it regularly
Compost microbes need moisture and oxygen to work. Check the pile once a week by squeezing a handful — it should feel damp but not soggy, like a wrung-out sponge. If it is dry, spray it with a hose or water can. If it is waterlogged and smells like rotten eggs, add dry brown material and turn it to add air.
Turning the pile every 7 to 14 days speeds decomposition from months to weeks. With a plastic bin, dump the contents into a bucket or onto a tarp, mix it with a shovel, and put it back. With a pallet bin, use a pitchfork to pull material from one side, chop it, and pile it back. With a tumbling bin, rotate the drum 5 to 10 times. If you do not turn it, the pile will still compost — it just takes 2 to 6 months instead of 4 to 8 weeks.
Temperature tells you the pile is working. A healthy pile heats up to 130 to 150 degrees Fahrenheit in the center as microbes break down material. You can feel this heat with your hand near the pile surface. If the pile stays cool and nothing is breaking down, it usually means too much brown material or not enough moisture.
Recognize when compost is finished and ready to use
Finished compost looks dark brown or black, crumbly, and earthy. You should not be able to identify the original materials — leaves, scraps, and cardboard should all be broken down. It should smell like soil, not like rotting food or ammonia. If you see whole food scraps or recognizable leaves, it is not ready yet.
The time to finished compost depends on how often you turn the pile and how small you chop the materials. A well-maintained pile with weekly turning can produce finished compost in 4 to 8 weeks. A pile you leave alone might take 6 to 12 months. You can use partially finished compost in garden beds or potted plants — the breakdown will continue in the soil.
Sift finished compost through a 1/2-inch screen (a piece of hardware cloth stapled to a wooden frame) to remove chunks and create a fine texture for potting soil or lawn top-dressing. Store finished compost in bags or bins in a dry place — it will not break down further once it is done.
Troubleshoot common problems
The pile smells like ammonia or rotten eggs: This means too much green material or not enough air. Add dry brown material (leaves or shredded paper) and turn the pile to add oxygen. Reduce how much green material you add each week.
The pile is not heating up or breaking down: Either the pile is too small (less than 3 feet cubed), too dry, or has too much brown material. Add more green material, water it, and turn it. A pile smaller than 3 feet by 3 feet by 3 feet takes much longer to heat up.
Pests are getting into the bin: Make sure the lid is tight and the bin is sealed on the sides. Do not add meat, fish, dairy, or oils. Bury food scraps under 6 inches of brown material so they are not visible on the surface. If you have a rodent problem, use a plastic bin or tumbling bin instead of an open pallet bin.
The pile is too wet and soggy: Drill more drainage holes in the bottom and sides. Add dry brown material and turn the pile to add air. If you are in a rainy climate, cover the top loosely with a tarp or cardboard to shed water while still allowing air flow.
Frequently Asked Questions
Can I compost in an apartment or small space?
Yes. A 20-gallon plastic bin fits under a sink, on a balcony, or in a closet. Keep it sealed and turn it every week to prevent odor. You can also use a small tumbling bin or a bokashi bucket (which ferments scraps in a sealed container before adding them to outdoor compost).
How long does it take to get finished compost?
A well-maintained pile with weekly turning produces finished compost in 4 to 8 weeks. A pile you do not turn takes 6 to 12 months. Smaller pieces, more green material, and regular moisture speed the process.
What should I do with finished compost?
Mix it into garden beds, use it as a top dressing on lawns, blend it into potting soil for containers, or add it to houseplant pots. It improves soil structure, adds nutrients, and helps soil hold water. You can also give it away or sell it locally.
Do I need to buy special tools?
A shovel or pitchfork is helpful for turning, and a spray bottle or hose for watering. A screen or sifter makes finished compost finer, but is not required. Most people use tools they already have.
Can I add weeds and diseased plants?
Avoid weeds with seeds and diseased plants. Weed seeds can survive the pile and spread when you use the compost. Diseased plants may carry pathogens that survive and infect your garden. Stick to healthy plant trimmings and kitchen scraps.