When it comes to the hemp plant, there are several genetic factors to consider. Some species are meant for CBD extraction only while others are meant to serve as stalk and fiber for the making of various textiles. Also, hemp consistency can be incredibly hard to maintain. Therefore, finding the highest quality seed is paramount, especially as it relates to ensuring that the THC amount remains below the legal limit of .3%. If a crop goes over the .3% level at harvest, it then becomes considered marijuana under the law and must be destroyed.