Mosses and cow parsley will feature in a Chelsea flower show garden to celebrate endangered British rainforests. Vast expanses of the UK were once temperate rainforest. But these moss-covered ancient trees and their lichen have become a rare sight due to deforestation and overgrazing. Dartmoor, for example, once covered with trees, now harbours just a few fragments of temperate rainforest. The Chelsea garden, which will be on display next May, is being designed by Zoe Claymore, who won a gold medal last year for the “renters retreat” showing how a small, shady courtyard can be turned into a wildlife haven.