Botanical name is Salvia Coccinea and belongs to Lamiaceae family. Other common names of Tropical sage are Texas sage, Scarlet sage, Tropical Sage, and blood sage.
Tropical Sage is a perennial herb and is a native of Mexico. It grows as a weed in most parts of India.
The plant grows to a height of 4 feet. The leaves are triangle shaped, hairy, green and pretty. Flowers are Red, Salmon, Pink, White, and Orange. Flowers bloom on the tip of the stem on loose whorls.
It is a popular garden plant and the flowers are also used to offer to gods.
It is called Kasi Thumbe in Kannada
Thanks for the information, Ganesh.Regards