Wild for weeds

In week's programme we’re going wild for weeds. Author and designer Jack Wallington sings the praises of these much maligned plants and offers ideas for using them in gardens. RHS gardening advisor Nikki Barker offers insight on dealing with Japanese knotweed. California-based educator Indy Srinath shares her love of dandelions and writer Gareth Richards offers insight into the secrets of weeds’ success.