Overview: In the Beechgrove Garden, Jim is dealing with hardy veg in the veg plot, while Carole is starting off some tender veg in the polytunnel. Brian Cunningham, head gardener of Scone Palace, is back at Beechgrove to finish the new alpine garden planting. Carole also visits Mike and Sue Thornley at Glenarn Gardens in Rhu, near Helensburgh. This garden dates back to the 1920s and 30s and is best known for its stunning collection of tender rhododendrons that are planted in a sheltered Himalayan glen.