Hmm... I agree with Bowser, it does not make sense to make a plant illegal. In fact it does not make sense to make something illegal because it would be dangerous. Windows are dangerous, mountains are dangerous, and most highly toxic mushrooms that we can find in the wood are dangerous, but none of that is illegal.<quoted text>a lot of plants occur naturally and are illegal. If People are allowed to grow it, then it's not natural. Giant duckweed is illegal in most states, is it ridiculous for being illegal? You are ridiculous.
Only medicinal plants appears to be illegal, and this is only manoeuvrings to sell hooking you with legal, expensive inefficacious medication.
Of course I can understand that some animals should not be legally owned by people, to prtect the species, or the environment, but that is another topic.