Carol Kirkwood takes an alphabetical journey through the world of gardening, getting inspiration and advice from some of the BBC's most popular garden presenters and programmes. In this episode, she's exploring subjects that all begin with the letter S.

Carol Kirkwood takes an alphabetical journey through the world of gardening, getting inspiration and advice from some of the BBC's most popular garden presenters and programmes. In this episode, she's exploring subjects that all begin with the letter U.