Unmissable events

Until June 5 ‘Rhododendrons: Riddle, Obsession, Threat’ exhibition, Inverleith House, Royal Botanic Garden Edinburgh, Arboretum Place. Our history of collecting, researching and cultivating the genus (0131– 248 2909; www.rbge.org.uk) Until September 11 ‘Inspired! Art Inspired by Literature, Theatre, and Music’ exhibition (right), Guildhall Art Gallery, Guildhall Yard, London EC2. Works of the 17th to 19th centuries drawing on the literary arts (www.cityoflondon.gov.uk) April 26–June 25 Oklahoma!, Young Vic, The Cut, London SE1. Rodgers & Hammerstein’s musical reimagined for the 21st century (020–7922 2922; www.youngvic.org)

May 3–8 Stratford Literary Festival, various venues, Stratford-upon-avon, West Midlands. Headliners include Sir Derek Jacobi, Maggie O’farrell and Ali Smith (0333 666 3366; www.stratford literaryfestival.co.uk)

June 1–July 3 Monteverdi’s

Orfeo, Garsington Opera, Wormsley Estate, Stokenchurch, Buckinghamshire (01865 361636; www.garsingtonopera.org)