Rhododendron oldhamii is a species of azalea in the family Ericaceae. It is commonly known as the taiwan azalea. Other names include: oldham's azalea, tropical azalea, and malaysian rhododendron.
Rhododendron oldhamii is endemic to the mountains of Taiwan. It has also been found in Macau, Hong Kong, South Korea, and Sikkim, India.
Rhododendron 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.
Rhododendron oldhamii is harmful to cats, dogs, and humans.
Rhododendron oldhamii can produce flowers, which means it can also produce fruits. It cannot self pollinate.