Worm Composting or Vermicomposting is a method of creating a high quality soil amendment using composting worms. These worms are not the typical earthworms you see in your gardens but smaller worms that are found in high organic environments such as compost piles.
The two most common worm species used are Eisenia fetida or Eisenia andrei.
Vermiculture is the practice of managing worms. It is important to provide a sustainable environment for the worms by managing the following conditions: provide a dark location for the bin, make sure there is good air circulation in and around the bin, keep the bedding moist, and provide an adequate food source.
It is also important to maintain a neutral ph level. An acidic environment can cause the worms to flee so make sure that the bin environment has a ph > 4.
Harvesting your worm bin can begin in about 3 months, but it all depends on what you are using as bedding. If you decide to use finished compost as your bedding and food source you can start harvesting vermicompost in a few weeks.