Rhododendron 'Laetevirens'
'Laetevirens' is an old cultivar from the early 1900s which came to Mustila about that time. It is a cross between the Carolina rhododendron (R. carolinianum syn. R. minus) and the European Alpine Rose or Rusty Leaved Alpenrose (R. ferrugineum). It was earlier called ‘Wilsoni’ but the name has been changed because there was already another rhododendron of this name.