Things You'll Need
Instructions
Maintain optimal conditions in your worm bin. That means the temperature, food source, moisture, darkness and oxygen levels are appropriate for your worms and they're thriving. Simply by keeping optimum conditions for your worms, they will increase in number in two to three months. Keep your bin as close to 70 degrees as possible but within the overall range of 55 to 77 F. Check the bin's moisture. If it's too wet, worms will drown; too dry and they'll try to leave the bin for better digs. The bedding should be about as damp as a well-wrung sponge. Harvest worm castings regularly because they can be toxic to the worms over time.
Order breeder worm stock from a reputable worm supplier. You'll be able to count on your worm population multiplying in two to three months, as long as you provide the worms with proper habitat.
Provide a little extra food for your worms. Worm populations decrease when worms have to compete for food, but they multiply when there is a lot of food available. This tends to be cyclical because new worms eventually compete for food, at which point you may need to start another or larger bin. Worms eat between half to more than their own weight daily and produce castings that are a rich source of nutrients for plants.