Plant Information Fiber hemp (Cannabis sativa L.), an annual crop, is grown for bast and hurd fibers. Some are dual-purpose grown for grain and fiber, but the focus of this article is hemp for fiber production. Bast fibers are produced from the outside of the stalk, while hurd fibers are from the interior wood core. Most of the current fiber hemp varieties are photoperiod sensitive and flower according to day length. Fiber hemp has separate male and female plants, which are typically mixed in a seed bag. Figure… Read More →