The Plant Britain special celebrates the role played by trees and hedgerows in helping to combat climate change, as well as improving well-being for humans and animals. Charlotte Smith finds out about green careers, Matt Baker meets a six-year-old environmentalist with big ambitions, Tom Heap joins the front line in the fight against tree disease, John Craven is at Westonbirt Arboretum, Joe Crowley learns how to collect and sow seeds, and Margherita Taylor prepares a Bristol community garden for winter
