Pre-schoolers learning the power of worm farms

South Auckland pre-schoolers are learning the value of getting their hands dirty to grow fresh fruit and veggies, and the awesome power of the humble earthworm to get it to go absolutely gangbusters. Kids at the Barnardos Early Learning Centre in Otara are stuck in to school's veggie garden and worm farm, learning how to transform food waste into healthy vegetables. Felix Walton reports.