Originating in Numenor, from whence it was brought to Middle Earth by the Numeroeans, Pipe-Weed is an analogue of tobacco. The flowering plant that it grows from is called Galenas, and was prized by the Numenoreans for the sweet scent of its flowers.
It was first cultivated and smoked by Hobbits, specifically one Tobold Hornblower from the Southfarthing of the Shire, and the best Pipe-Weed is still considered to come from that region.
From the Hobbits, the use of it for smoking spread among Men and Dwarves, and even Wizards, radiating out in particular from the crossroads of Bree, where traders from all those peoples regularly congregated. As such, other common names for Pipe-Weed include Westmansweed and Halfling’s Leaf.
Related drugs: Athelas, Ent-Draughts and Miruvóre.
The herb known as Athelas in the Sindarin tongue is a powerful healing agent when correctly prepared, and a moderately effective one if less correctly prepared. It is common in Middle Earth, especially in those territories that form (or once formed) the kingdoms of Arnon and Gondor, having originally been carried there from Numenor.
For such a useful herb, its properties had been largely forgotten by all except the Dunedain Rangers of the northern wilderness by the end of the Third Age. It was the healing agent of choice for Aragorn, and no doubt was incorporated into the knowledge of Gondor, Rohan and their allies after his ascension to the throne as King Elessar.
In Westron (the tongue of men), its name is translated as Kingsfoil, while in the Elven Quenya language, it is called Asëa Aranion.
Related drugs: Ent-Draughts, Miruvóre and Pipe-Weed