How to Build a Worm Compost Bin


Vermicompost is the compost produced by redworms eating your kitchen scraps. Building a worm compost bin for your leftovers reduces waste and provides you with high-quality compost. When deciding what size wormery you wish to build, make sure you can easily pick up and move a full worm compost bin. Five or ten gallon plastic containers that can be stacked make good wormeries. Besides kitchen scraps, you can also feed worms with any biodegradable material, such as cardboard egg cartons or newsprint. Find out how to build a worm compost bin to start using vermicompost.

Step 1

Drill twenty to thirty ventilation holes in one bin, just below the level of the lid. Space the holes about two inches apart from each other. Drill ten to twelve more holes in the bottom of the container for drainage.

Step 2

Drill twenty to thirty holes around the circumference of the second bin, halfway between the top and the bottom. This bin will catch the leachate, which are the liquids that will run off from the wormery on top.

Step 3

Place the first bin on top of the second. Line the top container with newspaper.

Step 4

Put equal parts humus, sand and dried leaves on top of the newspaper. Add a handful of crushed egg shells. Mix well, and then moisten mixture with water.

Step 5

Put your redworms on top of mixture and cover with lid. Give them a day or two to acclimate, and then place kitchen scraps on top of the bedding. Allow the worms time to eat the leftovers before giving them more, which may take up to a week.

Step 6

Separate the two bins once a month to drain off the leachate. The leachate can be used as fertilizer. As you remove the vermicompost from the top bin for your garden, replace the redworms' bedding as outlined in steps four and five.

Things You'll Need

  • Electric drill with 1/4" bit
  • Flat plastic storage bins with lids, 2
  • Newspaper
  • Humus
  • Dried leaves
  • Sand
  • Crushed egg shells
  • Water
  • Redworms
  • Kitchen scraps


  • East Sussex County Council
  • BBC
Keywords: building a worm compost bin, wormery home built, vermicompost red worms

About this Author

Ruth Taylor is a teacher and a freelance writer. She has been writing for years, but only recently started freelancing. Her articles have appeared in Livestrong, eHow and other websites. In college she majored in Spanish and graduated summa cum laude with a M.A.T. in teaching a second language. She has taught both in high school and elementary school.