Colorado did the same thing. As of last time I dealt with it, you can grow six plants... which could put out like 12 pounds (5.5 kg) if you're good at it, but you can't travel with that because you were only supposed to have one ounce (28g) in your possession. Drive somewhere with 1/2 a lb? Same bullshit as always, second degree felony. The cops managed to to keep it illegal after legalization.