Monty Don begins to divide ornamental grasses, offering advice on what to do with containers that are past their best. He also plants up a colourful alpine trough and gives tips on what to sow now in the vegetable garden. Nick Bailey travels to Shropshire to assist a viewer whose border has become a tangle of shrubs. Plus, Frances Tophill makes progress on her shared allotment in Bristol as she prepares the beds for sowing her first crops and Arit Anderson visits an extraordinary high-rise building in Milan that has been designed as a living forest.