Uncovering the mysterious Miss Harrisson, plants on trial and hats off to begonias (Ep 141)

This week's podcast is all about gardening winners - from Edwardian trailblazer who ruffled feathers by daring to win a nationwide horticultural competition while being a woman - to brilliant begonias, which won the RHS People's Choice Award last year on the Wisley trials field. Plus a look at how RHS Plant Trials are conducted and what the Awards of Garden Merit they produce mean for gardeners. For more info and useful links see www.rhs.org.uk/podcast