Magnolia ‘Iolanthe’ produces large, bowl-shaped flowers with a pastel lavender-pink color and cream-pink interiors. The flowers have a heavily textured appearance and can be as wide as 28cm. It blooms from an early age and over a long period from early-spring. It sets flowers all along the branches and forms a neat, rounded shape with an open, airy branching habit. Magnolia ‘Iolanthe’ is deciduous, not native to New Zealand, and a hybrid between Magnolia x soulangeana ‘Lennei’ and Magnolia ‘Mark Jury’. ‘Iolanthe’ was produced by Felix Jury in New Zealand and introduced in the early 1970s by Duncan & Davies Nurseries in New Plymouth, New Zealand.