Rachel de Thame thinks that irises aren't getting the attention they deserve. On her revival, she uncovers one woman's mission to save a unique collection of heritage irises, and she gets creative with floral art using irises for inspiration. Throughout the show, she shares her tips on how to successfully grow and propagate irises, as well as demonstrating how to extend their season of interest.

Toby Buckland reveals there is so much more to grass than meets the eye. On his revival, he discovers the Victorians' passion for ornamental grasses with a visit to the Royal Botanic Gardens at Kew. He also attempts to rebrand grasses to deal with their complicated, tongue-twisting Latin names, which often put gardeners off, and meets a modern-day plant hunter who travels the world in search of unusual and exotic grasses. Toby also shares his design tips on how to make grasses the stars of the border and demonstrates how to contain bamboo and prevent it from running rampant in your garden. Show less