It’s difficult to sum-up the venerable Chelsea Flower Show in a single sentence, but we’ll have a go. Edwardian gardening institution reinvented for the 21st century. Social centrepiece of London SW3. Temporary oasis in the heart of the city. Eco-friendly event that makes you stop and stare in awe. Whatever it might mean to you, this year, green fingered commentators are set to exhaust their supply of superlatives as the show marks its centenary… showing off by celebrating its 100th birthday in spectacular style from 21-25 May. And you can join them when you buy train tickets to London and head for Royal Hospital Road.