In this video, Ask This Old House landscape designer Jenn Nawada gets a lesson on the best ways to compost organic materials at home.
Steps for Using a Compost Bin
- Sort organics to throw in the compost bin, like fruit, vegetables, coffee grounds, and eggshells for carbon and dry leaves, newspaper, or cardboard for nitrogen. Do not use meat, dairy, oils, or bones in compost.
- To build your own composter, use a 32-gallon trash barrel and drill several 5/16-inch holes using the cordless drill on the cover of the garbage can and up and down the sides for aeration.
- Add organic matter to the compost bin. It should be a 3:1 ratio of carbon items to nitrogen.
- Aerate the pile at least once a week, stirring the compost and getting the materials to break down.
- Finished compost should be ready for use in several months.
When aerating, you want the material to feel like a wrung-out sponge—moist but not dripping. Rather than a shovel, try using a metal pole or pipe to stir the compost; simply stick it into the bin and make wide circles to aerate the material. The holes drilled along the sides of the bin will also allow oxygen and moisture into the compost between turnings.
Pro Tip: Roger Cook, This Old House landscape contractor, cautions against building compost bins from pressure-treated wood: “As this wood breaks down, it’s gonna release those chemicals into the compost. And that’s not a good thing.” Instead, consider using untreated cedar or repurposed pallets from your local recycling center.
