Monty Don is on the campaign trail for wild flowers. 98% of wild flower meadows have been lost since the first part of the twentieth century, a shocking statistic which he believes all gardeners can do something about. On his revival, he tries his hand at making hay the old-fashioned way in a coronation meadow, visits the largest biodiversity hotspot in the world - Kew's Millennium Seed Bank - and shows how to grow wild flowers, even without a garden.
Meanwhile, Joe Swift is determined to return the nation's front gardens to their former glory. He bases his campaign at the award-winning Rockcliffe Avenue in Whitley Bay and shares his tips on how to transform front gardens in a few simple steps. He also discovers that greener streets reduce pollution and hits the road to get the message across in his Great British Plant Giveaway.