Vermicomposting 101
Solid Waste recently had the opportunity to attend the Market Bunch Kids Club, a weekly interactive and educational program for kids at the Carrboro Farmers’ Market, to discuss food waste, backyard composting, and vermicomposting. Families were able to learn about composting and hold worms from a vermicompost bin!
Vermicomposting is another great method for composting organic waste at home. In a vermicompost system, earthworms and microorganisms eat organic waste and process it into compost. Eisenia fetida, also known as the red wiggler, is one earthworm species most used for vermicomposting. In fact, only seven earthworm species are suitable for vermicompost bins; other worm species will not survive in a vermicompost bin. Similar to a backyard composter, red wigglers and microorganisms eat fruit and vegetable scraps, eggshells, tea bags, and coffee grounds.
There are many options for starting your own vermicompost. The cheapest option is to create a bin from a plastic storage tub by drilling air holes on the walls and drainage holes on the bottom and placing the bin on a tray. Manufactured bins can also be purchased. Worm bins are best kept at 55 – 80°F, so keeping the bin inside or in the shade during warmer months is recommended. Thankfully, as long as worms are fed the proper organic material and kept in a proper environment, vermicompost bins are odorless and pest free!
After 3-6 months of feeding worms, vermicompost can be harvested from the bin (leave the worms in the bins though) and applied to gardens, tree beds, potted plants, lawns, or used as mulch. Vermicompost provides many benefits to soil and plants, including improved soil structure, moisture retention, increased nutrient levels, carbon sequestration, soil erosion reduction, and a reduced need for fertilizers and pesticides.
If you’re interested in learning more about vermicomposting, please visit the NC Composting Council’s website.