Monty plants tender perennials, including salvias and gingers, in the Jewel Garden, brings his citrus plants out from their winter protection and plants primulas in his new bog garden.As tulip season reaches its glorious peak, Rachel de Thame visits a dazzling display of this spring favourite at a garden in Gloucestershire, and Joe Swift checks out a pub garden with a difference in East Sussex.We meet a gardener who loves to experiment on his allotment in Bristol and a GP in north London with a passion for growing citrus plants. There's also another chance to see what Gardeners' World viewers have been getting up to in their gardens.