If it's from vietnam depending on the range it came from like some1 already said. I think you might have the dalat strain. It's called that because thats the region it came from. Either that or it could be a Thai landrace. Both of them are purebred sativa land race. Expect 12+ weeks and soaring , edgy, racing high. The opposite of couch lock. Chances are if it really is from vietnam it will be a purebred sativa.... my parents are viet and were in the war and told me about these plants. Said its really strong, doesnt look as frosty as modern day strains but it will pack a racy, edgy punch, soaring high. I have not tried this purebred yet tho.... If you have the dalat. I would like to trade some beans for a few of yours.... pm if you interested. The hoa bac i dont know much about it but i believe it could come from north side of vietnam region.