On Saturday 23rd May 2026, Sunday 24th May 2026 and Monday 25th May 2026, Haldon Grange Garden will be opening from 1pm until 5pm for the NGS at Haldon Grange, Dunchideock, Exeter, Devon, EX6 7YE. Parts of this thirteen acre garden date back to the 1770s. This hidden gem boasts one of the largest collections of Rhododendrons, Azaleas, Magnolias. and Camellias. There is a six acre arboretum with mature and rare trees, complemented by a lake and cascading ponds. There will be a plant stall at this opening; for all the details, please click here.