- Azaleas are flowering shrubs in the genus Rhododendron.
Azaleas bloom in the spring (April and May) in the temperate Northern Hemisphere, and October and November in the Southern Hemisphere).
杜鵑花在溫帶北半球的春季（4 月和 5 月）開花，南半球的 10 月和 11 月開花）。
Plant enthusiasts have selectively bred azaleas for hundreds of years.
Azalea seeds can also be collected and germinated.
Azaleas are generally slow-growing and do best in well-drained acidic soil.
Azaleas are native to several continents including Asia, Europe and North America.
Azaleas are planted abundantly as ornamentals in the southeastern US, southern Asia, and parts of southwest Europe.
The azalea is also one of the symbols of the city of São Paulo, Brazil.
In addition to being renowned for its beauty, the azalea is also highly toxic—it contains andromedotoxins in both its leaves and nectar, including honey from the nectar.
- Azalea is a common ornamental flower plant in many parks in Taiwan.