Adam Frost visits Mary Berry at home to hear about another of her great passions in life, gardening. Mary shares her love of cut flowers and some tips on freezing herbs, while Adam shows her how to sow the tiniest of snapdragon seeds with a cocktail stick - something Mary has an abundance of! Meanwhile, Rachel de Thame visits a ‘cut your own flower' field in Dorset; Frances Tophill joins garden designer Tom Massey to look at the ways urban greening projects can breathe new life into our towns and cities; Nick Bailey visits a garden near Dorchester bursting with more that 350 different rose varieties; and there's some home-grown produce on the menu as Joe Swift visits the kitchen gardeners at Le Manoir Hotel in Oxfordshire.