An herb grown by the hobbits.
All the same, observations that
I have made on my own many journeys south have convinced
me that the weed itself is not native to our part of
the world but came northward from the lower Anduin,
whither it was, I suspect, originally brought over
the Sea by the Men of Westernesse. (LOTR.21)
The "art" of smoking pipeweed spread from the hobbits
to Men, Dwarves and Wizards most likely through Bree.
The true pipeweed was discovered and first grown in
the Shire by Tolbold Hornblower.
The Lord of the Rings
Shire | Bree | The
Third Age of the Sun