The peonies are out in Kew Gardens, with staff and visitors enjoying their moment in the sunshine. But all is set to change, as Joe undertakes a massive year-long renovation of the peony garden. Meanwhile, the secrets of the peony are unveiled in Kew's Economic Botany Collection, where scientist Monique reveals the amazing healing properties of this underestimated shrub, and we find out about Kew's important work investigating the benefits, and dangers, of herbal medicine. It's also big change for Hélèna in the kitchen garden as all her precious vegetables are pulled up for a massive overhaul. Before she can get back and start replanting, Hélèna gets the unusual job of adding plants to some giantsized, mythical wooden trolls that have come to the gardens for an exhibition. In the glasshouses, Eleanor and Tom are playing with some deadly plants as they update the carnivorous plants section. We see Eleanor undertake some miniature landscaping and Tom introduces us to some scary plants wi