A worm farm is small enough to be kept on a balcony, so if you have a limited amount of space, it’s ideal for producing your own fertiliser. Here’s how to build your own.
- You’ll need a moisture-proof container that is 30 centimetres deep with drainage holes in the base, bedding (in the form of straw or shredded newspaper), water and some kitchen scraps.
- Place some bricks in a tray and sit the container on the bricks. Excess liquid from the worm farm will fall into the tray.
- Fill the container to about three-quarters full with bedding, moistened to the consistency of a damp sponge. Add a little soil or sand to help the worms digest the waste. Leave it to settle for a couple of days.
- Introduce tiger worms (Eisenia fetida), available from worm farms or the Internet. Or ask at your local hardware store or nursery. Don’t use worms from the garden as that type prefers ordinary garden soil and won’t thrive.
- Loosely cover the box with a sheet of plastic or sacking. If you keep your worm farm outdoors, a container with a lid is best.