Deborah W Rhododendron calendulaceum June 7, 2015 These and other beautiful Rhododendron species bloom in the Amstelpark, Amsterdam, Netherlands. NIKON D5200 52mm · f/5.6 · 1/200s · ISO 100Nature rhododendron calendulaceum rhododendron calendulaceum flowers close up - flower orange flowers Log in or register to post comments