Overview:t is a Beechgrove rhododendron special, with Jim and George answering some classic questions about rhododendrons and revamping the main rhododendron border now that it has finished flowering.Meanwhile, Carole visits Harry Nicol's garden in Inverness. Harry's recently renovated garden boasts a riot of rhododendrons all flowering their socks off and proving that you don't have to be on the west coast to grow rhododendrons.Carole is also at Garthdee Allotments on the outskirts of Aberdeen, revisiting 'garden hero', Sandy Inkster. Sandy is a mine of allotment handy hints and is harvesting early polytunnel-grown potatoes.