Interesting. Do you know how pollen falls into this? Is that exempt or is there paperwork, fees, etc for this as well?
I would suspect that pollen would be regulated like seed, but I honestly haven't looked into it. Because it is indeed plant material, and that specific term is used in several of the applicable statutes, you can bet its importation is regulated!
__________________
Be who you are and say what you think. Those who matter don't mind and those who mind don't matter.