Our worm farm is simple enough. It works to transform kitchen organics and paper that don’t go to the Guinea Pigs into a ready to go mix of humus and seeds from the foods that we like.
I think the most important thing is that it is convenient to use. We have a small organics bucket in the kitchen, it has a foot pedal, is labeled clearly, it seals tightly and has a lift-out bucket. This is then emptied into a converted wheely bin on the south (shady) side of our house. This system means that the whole kitchen – compost – herb garden connection involves walking about 10 meters, all undercover.
The worm farm wheely bin conversion has a flap cut at the bottom front. This flap has a few hinges attached so that castings (and worms) can be scooped out. It must be able to drain freely. The bin is lifted slightly off the ground on bricks. A bucket can catch the wormjuice.
It would probably benefit from a bit more oxygen, but it smells sweet and we make sure we keep things fluffy in there. Usually a couple of pages of wet newspaper (from the guinea pigs) get layed between food scraps that get emptied every other day. The bucket is then washed and poured over the top.
I check on the worms everyday because they are my pets and I like them to be happy. I’ve had to make a few alterations to the mix along the way. Just putting food in their isn’t enough and unlike compost, they aren’t too fond of grass either. Wet newspaper is heaven to our composting worms.
The worms themselves (and their sidekicks the bacteria) were sourced from the Permaforest Trust’s worming operation. It is important to get the right species of worm for the job, most will not tolerate being farmed. Ours love it.