R. yakushimanum "Lumina" Rcv. Pinguin Rcv. Berlinale Rcv. Blue Peter Rcv. Furnivall's Daughter R. yakushimanum "Falling Snow' Rcv. Gomer Waterer R. yakushimanum "Romantika" Rcv. Djingestan Hobbie Rhododendron ParkHachmann Nursery