Overview: Nicki Chapman and Andy Sturgeon celebrate the people behind the scenes that make Chelsea one of the greatest flower shows in the horticultural world. There's a tribute to the young generation of gardeners and designers cutting their teeth at the show for the first time. And Andy talks to designers Jane Owen and Anne Marie Powell, who have chosen to highlight the plight of our tropical rain forests by building one in the Royal Hospital grounds - with help from a group of ladies from Cameroon.