Polianthes tuberose is the botanical name of Rajanigandha and the other common names are Mexican tuberose, Sugandaraja (Kannada), Nelasampengi (Telugu), Nila Sampangi (Tamil), Gulcheri (Marathi), Ye Lai Xiang (Mandarin). All the names almost mean “fragrance of the night” or “king of fragrance”. Rajanigandha belongs to Agavceae family.
Rajanigandha is a perennial plant that can be grown from tubers. The leaves of the plant are long, green and grass like, which are clustered at the base of the plant. The spike of flowers appears from the middle of the plant that can reach up to 18 inches in height. Few smaller leaves are attached to the spike. The flowers bloom in a cluster on top of the spike. The flowers are waxy and have five lobed petals and are tubular. They can be either single layered flowers or double or triple layered flowers.