1) “Big” is a relative term, but there are several small pipeweed growing areas in Faerûn. You need sandy (or gravel) soil and a temperate climate. Here are a few: coastal southern Ulgarth, Durpar on the west bank of the Heldar, the shores of the Great Sea in... #realmslore

2) ...Konigheim (the Utter East), near the northern headwaters of the River of Spears in Mulhorand (north of Klondor), just south of the Firward Mountains in Ashanath, and just west of the Tsurlar Forest in the Vast (east of the Stormcrest Trail). #realmslore

3) There are many more small local “pockets” of pipeweed growing, as it’s now (in 1500 DR) a companion plant grown to protect some food crops. #realmslore