The Singba Rhododendron sanctuary is situated towards the North of Sikkim in the Lachung Valley. This sanctuary is bounded by the Yunthang Valley in the south, also known for its alpine meadows and hot springs. It is bounded by Chuba Sagochen mountain range on the east and Chomzomei Tso on the west.
The sanctuary is famous for the abundant growth of Rhododendron shrubs and trees. There are about 40 different varieties of Rhododendron recorded in the sanctuary.
The sanctuary has a rich vegetation cover. There are a wide varieties of plants and trees. The floral varieties like Saxifrages, Potentillas, Primulus, Poppies, Gentians are commonly sighted.