Monty Don makes a start on his new wild flower garden at Longmeadow and at last gets to taste the first new potatoes of the year. He also demonstrates how a radical chop of some border plants now can rejuvenate them for later in the season. Carol Klein celebrates a cottage garden favourite, the foxglove, and Joe Swift drops in on world renowned garden designer, Dan Pearson, to find out what he's got in store for his new garden.