Join Monty at Longmeadow for an indulgent, horticultural romp through the Gardeners’ World archives and a joyous riot of colour as the show celebrates some of the most beloved summer flowers. From delphiniums to clematis, irises, orchids and dahlias, expert growers share their passion, along with hints and tips.Carol Klein visits a garden in Worcestershire, where she discovers picture-perfect peonies. Adam Frost travels to the Cotswolds and finds out what happens when plants are brought together with imagination and daring, and Nick Bailey guides us through the world of Britain’s favourite flower, the rose.