Why do wormeries have a tap?
Worms breathe through a layer of moisture on their skin and therefore the contents of the wormery should be kept moist (not wet) at all times. The sump is there to collect any excess liquid. As it passes through the bin this liquid becomes charged with nutrients and therefore makes an excellent plant feed. The tap is there to help you collect it. Dilute with 10 parts water and use it to feed your plants for free!
