At Longmeadow, Monty Don reveals how the garden has changed over the last four weeks and gets to grips with a variety of jobs in the walled garden. He demonstrates how to cut back hardy biennials to encourage secondary growth, shows us how to thin out our borders as well as other seasonal tasks. If edibles are your passion he'll be giving tips on what you can sow, such as carrots and beans, as well as harvesting, cooking and tasting his early potatoes to find his favourite variety. Carol Klein celebrates the hardy geranium. She discovers how they thrive in a wild nature reserve in Somerset and visits East Lambrook Manor, a beautiful garden that is host to a stunning array of this cottage garden stalwart. And Rachel de Thame returns to the army barracks in Didcot where the community garden she's helping to create is beginning to bloom.