40 botanical artists will be showcasing their best illustrations and vying for RHS Medals.
Displays will be complemented by rare orchid paintings, books and photographs as well as displays by the National Association of Flower Arrangement Societies.
Other highlights include a series of talks and demonstrations on choosing and growing orchids on both days of the show.
Preview Evening: the perfect start to the weekend - relax with a complimentary glass of wine and be one of the first to wander among the displays.
Friday Preview 6.30pm - 9pm
Saturday & Sunday 10am - 5pm
RHS members with membership card £3
Adults £5
Preview evening £10 includes a glass of wine and re-entry on Saturday or Sunday.
Special rates are available in advance for groups of 10 or more, groups from RHS Affiliated Societies and groups from Orchid Societies.