Worm cast and Compost that has been turned by Worms at Staffordshire Worms. It is well known that the humble worm is responsible for fertilising and conditioning our gardens. Our worms live in the finest quality sedge peat and every grain of worm cast has passed through a worm and been infused with the most natural fertiliser that nature provides. Worm Cast provides slow release nutrients and trace elements which help with vigorous growth and root formation. It also helps with moisture retention.