Kusha, whose name signifies sharp in the sense of
acute, is the root for the Sanskrit word for "expert," kosala. The
sanctity of dhurba, also known as kusha (or, kusa) grass, is as old as
the Indian gods. All kind of evil forces like, ghosts, spirits,
demons, etc. keep away from the place where it is used.This is
considered to be the holiest of all the thirthas here, and is believed
to be the spot where Gowtama Rishi finally secured Ganga on earth by
spreading the Kusha or the Durva grass around her.Kusha grass is
considered purifying, and rings woven of it are sometimes worn in
worship to keep the hands ritually pure. It is also a remarkable
insulator, both physically and metaphysically. In India I have used
kusha mats with a blanket on top for sleeping on damp ground in
bitterly cold weather, and was never bothered with either damp or
cold–at least underneath me. Such mats also make very good meditation
seats. Also available Kusha Grass & Durba Grass.