Cigarettes containing tobacco substitutes not for medical purposes in the nature of hemp with a delta-9 tetrahydrocannabinol (THC) concentration of not more than 0.3 percent on a dry weight basis; loose hemp for smoking purposes with a delta-9 tetrahydrocannabinol (THC) concentration of not more than 0.3 percent on a dry weight basis; pre-rolled cigars containing hemp with a delta-9 tetrahydrocannabinol (THC) concentration of not more than 0.3 percent on a dry weight basis