Rhododendron oldhamiiRhododendron oldhamii is a species of azalea in the genus Rhododendron. It is commonly known as the taiwan azalea. Other names include: oldham's azalea, tropical azalea, and malaysian rhododendron.DistributionRhododendron oldhamii is native to the mountains of Taiwan. It has also been found in Macau, Hong Kong, South Korea, and Sikkim, India.AppearanceRhododendron oldhamii can grow up to 3 meters tall. Its flowers can be brick red to pink. It is medium size and grows upright without support. It grows slowly.ToxicityRhododendron oldhamii is harmful to cats, dogs, and humans.ReproductionRhododendron oldhamii can produce flowers, which means it can also produce fruits. It cannot self pollinate.