The business will go underground and "vendors" will only deal with those that can keep their mouths shut.
They cannot keep people from planting their own food and herbs - if they have the land... indigenous is best IMO anyway and God provided EVERY habitable environment with a full range of plant medicines.
Let's hope the next step is not to ban the plants we grow in our yards. Like they did with the bitter almond... and here, with olive trees. Only olive trees planted before the ban are around... and a few wild ones from seeds.
I have about 200 olive seeds... perhaps I should try my hand at it, eh?
As I have been stating... anyone with a bit of understanding of these things should only ever plant edibles. Say no to useless ornamentals...