Food scraps make up a large share of household trash. When they end up in landfills, they take up space and can produce methane, a powerful greenhouse gas, as they break down. Composting turns those scraps into rich soil instead, ready to feed gardens, tree pits, and window boxes.
Many people assume composting is only for suburban homes with big yards. In reality, apartment dwellers and families in triple-deckers can compost too. Spring, as gardens wake up and windows open, is a great time to start. This guide walks through options for every kind of city home.
What Is Composting?
Composting is the natural process of breaking down organic material, like fruit peels, vegetable scraps, coffee grounds, and leaves, into a dark, crumbly material called compost. Microorganisms, worms, and insects do most of the work. The finished compost improves soil, helps it hold water, and feeds plants.
A healthy compost system needs a balance of:
- Greens: Nitrogen-rich materials like fruit and vegetable scraps, coffee grounds, and fresh plant trimmings
- Browns: Carbon-rich materials like dry leaves, shredded paper, cardboard, and sawdust from untreated wood
- Air: Oxygen helps the right microbes thrive
- Moisture: Compost should feel like a damp sponge
What Can and Cannot Go In
For most home compost systems, use this guide:
Usually yes:
- Fruit and vegetable scraps
- Coffee grounds and paper filters
- Tea leaves and paper tea bags without staples
- Crushed eggshells
- Dry leaves and small plant trimmings
- Shredded plain paper and cardboard
Usually no for home bins:
- Meat, fish, and bones
- Dairy products
- Oils and greasy foods
- Pet waste
- Diseased plants
- Glossy or coated paper
Some municipal or commercial compost programs accept a wider range of items, including meat and dairy, because their systems run hotter. Always follow the rules of the specific program you use.
Option 1: Countertop Collection and Drop-Off
The easiest way for apartment dwellers to start is to collect scraps at home and bring them to a drop-off site or curbside program.
- Keep a small lidded container on the counter or under the sink.
- Add food scraps as you cook and eat.
- Empty it into a larger bin, or freeze scraps in a bag to reduce odors.
- Bring scraps to a local drop-off site or set them out for curbside pickup if available.
Some cities and towns in Massachusetts offer curbside food waste collection or drop-off locations, and some community gardens and farmers markets accept scraps. Check your city or town’s official website or ask through 311 to find current options.
Option 2: A Shared Backyard Bin
Triple-deckers and small apartment buildings often have a shared backyard. A single compost bin can serve the whole building.
- Get permission from the property owner first.
- Choose an enclosed bin with a lid to discourage pests.
- Place it on level ground in a spot with partial sun, away from doors and windows.
- Post a simple sign listing what goes in and what stays out.
- Keep a bin of dry leaves or shredded paper nearby so everyone can add browns.
- Assign a household or rotate turns for mixing the pile every week or two.
Some cities offer discounted compost bins for residents. Your public works or recycling department can tell you if such a program exists.
Option 3: Worm Composting Indoors
Worm composting, also called vermicomposting, uses red wiggler worms to break down food scraps in a bin. It works well indoors because a properly managed bin has little odor.
Basics of a worm bin:
- A plastic bin with small air holes and a lid
- Moist shredded newspaper or cardboard as bedding
- Red wiggler worms, available from garden suppliers
- Small amounts of chopped fruit and vegetable scraps, buried under bedding
- A cool, dark spot, such as under a sink or in a closet
Avoid overfeeding. Start small and add scraps as the worms eat. Worm bins are also a fantastic science project for kids.
Troubleshooting Common Problems
- Bad smell: Usually too many greens or too wet. Add browns and mix to add air.
- Fruit flies: Bury scraps under browns and keep a lid on countertop containers.
- Pile not breaking down: Too dry or too many browns. Add water and greens, then mix.
- Pests: Keep meat, dairy, and oils out, use enclosed bins, and bury fresh scraps.
Using Your Compost
Finished compost looks dark and crumbly and smells earthy. Depending on the method, it can take a few months to a year. Use it to:
- Enrich garden beds and community garden plots
- Top-dress potted plants and window boxes
- Improve soil in tree pits, following city guidelines
- Share with neighbors who garden
Making Composting a Building Habit
Composting works best when everyone in a building understands the system. Hold a short meeting or share a one-page guide. Celebrate milestones, like the first batch of finished compost. When neighbors see results in their window boxes or backyard garden, participation tends to grow.
Composting Checklist
- Choose a method: drop-off, shared bin, or worm bin.
- Get permission for shared spaces.
- Balance greens and browns.
- Know what goes in and what stays out.
- Keep bins covered and pests away.
- Use finished compost to grow something beautiful.
Quick check: A compost bin smells bad. What is the most likely fix?
- Add dry browns like leaves or shredded paper and mix it to add air
- Add more fruit scraps
- Seal the bin completely so no air gets in
Show answer
A. Odors usually mean too many wet greens, so adding browns and air restores balance.
