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Photo: Tom Parnell from Scottish Borders, Scotland, CC BY-SA 2.0 via Wikimedia Commons
25 hectare arboretum in the hills of the upper Tweed valley, run by the Royal Botanic Garden of Edinburgh. The cool climate suits mountain trees and shrubs from Nepal, China and Chile, and the azaleas are a riot of colour late May / early June. Assistance dogs only.
Dawyck Botanic Garden is a botanic garden and arboretum covering 25 hectares at Stobo on the B712, 8 miles south-west of Peebles in the Scottish Borders region of Scotland, OS ref. NT168352. The garden is situated in the Upper Tweed Valley, a National Scenic Area and is open 1 February - 30 November.
© OpenStreetMap contributors
Though Kailzie is open year-round, with spring displays of snowdrops and daffodils, the main draw is the 19th-century walled garden open from April. Dogs permitted on lead. They have accommodation.
Helpful shop does mountain bike hire and repairs. Lots of nearby bike trails, you can hire a bike and helmet for around £30 a day. Check with them for any forest trails that might be closed temporarily for logging.
A fortified mansion from 15th century in what might be called "very very early Baronial" - it may have acted as a prototype for the later fashion. Furnished mostly in 18th century style - it was never Victorianised - and with displays on its history. There are also gardens, a walled orchard, microbrewery, and upscale accommodation.
Victorian printing press, initially water-driven by lowering a wheel into the stream beneath the workshop, like an aircraft undercarriage. Visit by 90-min guided tour, 3 tours a day.