That particular flower is unknowingly grown all across the country in many a graden. It comes in many flower mixes and if they are not sliced and nothing else unlawful is going on then there will be no issues. However if you get busted for growing weed and they noticed the red flowers in the garden (even if they are not sliced) they could still tack it on as a another charge. And I'm sure they would. Their philosophy is tack on as much as possible, whenever possible and see what it filters down to after the lawyers are done.
Theirs a LOT of misunderstanding regarding the laws of this flower, not to mention a huge gray area. But it's still red tape you don't want to get tangled in, even if you are right..
And if in the future you feel the need to grow such a beautiful flower, for aesthetic reasons only of course, they do come in colors other than red. :hubba: