…England. With 15,000 specimens, and 2,500 species of tree from all over the world, the arboretum plays a vital part in research and conservation, as well as being a stunningly beautiful place to visit and explore rare, interesting and beautiful plants from the furthest corners of the globe. To visit Westonbirt Arboretum it is essential to pre-book for the following key dates: - Bank Holiday Weekends: Thu 2 – Sun 5 June and Sat 27 – Mon 29 Aug in 2022. - Autumn - 01 Oct - 13 Nov - Christmas - 24 Dec – 02 Jan inclusive. Outside of these dates tickets can be purchased on site or pre-booked on line.