Irises not seen at the RHS Chelsea Flower Show since the post-war era are set to make a comeback this May.

Plant Heritage collection holder Sarah Cook will bring her National Plant Collection of Irises bred by Sir Cedric Morris to Chelsea’s Grand Pavilion.

Sir Cedric Morris was a renowned iris breeder, plantsman and artist.

He is known for breeding the first ‘truly pink’ irises, according to the RHS – including one called ‘Strathmore’ which was shown at Chelsea in 1948.

Sir Cedric bred and named about 90 irises, but many have been lost. His blooms were a talking point at Chelsea in the late 1940s and 1950s, but have not been seen there since.

Sarah Cook spent 10 years collecting Sir Cedric’s irises that have survived.

Her Chelsea stand will showcase tall bearded Irises in partnership with Howard Wholesale Nurseries, which has spent seven years bulking up stock.

She said the opportunity to celebrate the “work of such a renowned breeder” at Chelsea was the “chance of a lifetime”.