Rhododendron rarumRhododendron rarum is a rhododendron species native to the Central and Bismarck Ranges of Papua New Guinea.DescriptionIt is a compact prostrate shrub with tubular, red flowers and narrowly elliptic leaves.HabitatThis species does not tolerate frosts, so must be grown under cover in temperate climates. Its small size and prostrate habit make it an ideal subject for a hanging basket or similar.