What is the magic number when it comes to growing jumbo leaks? What can an ant teach you about the state of your compost heap? Chris Beardshaw, Matthew Biggs and Bunny Guinness have the answers. In addition, Bunny Guinness talks to Daniela Coray, Daniela Coray - winner of the RHS Young Designer of the Year Competition 2011. Matthew Biggs investigates 'Blue Mouse Ears' and 'Frosted Mouse Ears' Hostas.