500 Black Henbane Seeds (Hyoscyamus Niger) (1,000) Henbane is an annual to biennial with distinguishing hairy, toothed leaves and greenish to yellowish flowers with dark purple veins that almost appear black. Originally from Eurasia, it is now found throughout the world and is most commonly grown as an ornamental or landscaping plant. Growing Information: Like those of many other nightshades, Black Henbane seeds have germination inhibitors in its seeds to make sure that all the seeds do not germinate at once in the event that unfavorable conditions should arise afterwards. Seeds should be cold stratified in the fridge for two weeks before sowing. Soaking them in water that is changed regularly during this period will help leach off the germination inhibitors. As an alternative, they may be placed in a moist paper towel in a zipper baggie while in the fridge. If sowing outdoors, sowing in December will provide a natural cold stratification. Pretreatment with gibberellic acid will also improve and even out germination if available. Afterwards, sow them in pots in a well-draining sandy soil. Transplant the seedlings at two inches to a sunny location. Do not over-water.