The Rhododendron is the national flower of Nepal. The hills and mountain-side ranges of Nepal are decorated with different colors and shape. Rhododendrons are plants with beautiful flowers and glossy leaves. The flowers are usually shaped like a tube or a funnel. They may be white, pink, red, purple, yellow, or blue. Some plants grow large clusters of flowers.

Rhododendron (from Ancient Greek ῥόδον rhódon “rose” and δένδρον déndron “tree”) is a very large genus of 1,024 species of woody plants in the heath family (Ericaceae), either evergreen or deciduous, and found mainly in Asia.

It is the national flower of Nepal, the state flower of Washington and West Virginia in the United States, the provincial flower of Jiangxi in China and the state tree of Sikkim and Uttarakhand in India.

Most species have brightly colored flowers which bloom from late winter through to early summer.

Rhododendron is a genus of shrubs and small to (rarely) large trees, the smallest species growing to 10–100 cm (4–40 in) tall, and the largest, R. protistum var. giganteum, reported to 30 m (100 ft) tall. The leaves are spirally arranged; leaf size can range from 1–2 cm (0.4–0.8 in) to over 50 cm (20 in), exceptionally 100 cm (40 in) in R. sinogrande. They may be either evergreen or deciduous.