Threadgrass is a type of grass that prolifically in the grasslands surrounding the many rivers of Bohaar in the Stormlands. As each narrow blade of the grass grows, it wraps around others from the same plant and others nearby in such a way that it naturally forms into strands of string and rope, intertwining almost like vines. Despite the thinness of the grass, by using itself for support it can reach heights of six feet or more.
The people of Bohaar have long made use of threadgrass, allowing it to dry after harvesting before using it for the same purposes as one would manufactured ropes.