Earthworms

Holly wants to know all there is to know about wriggly earthworms! Ferne visits a worm farm and meets worm expert Ken, and they handle different species of UK worms. Meanwhile, Rory and his son Sandy search the compost bin and the garden for worms and decide to build a wormery to make worm tea! Also, we find out why earthworms are so important to the planet by being amazing soil engineers.