"It’s illegal to take recreational cannabis across the border – in either direction – without a specific recreational marijuana canada legalization licence. And it’s also a crime to possess recreational cannabis for the purpose of exporting it. So keep it out of your luggage. 2. Health Canada is responsible for the administration of the Cannabis Act and its regulations (with the exception of regulations pertaining to police enforcement), and the Canada Border Services Agency (CBSA) provides supporting activities to prevent and interdict prohibited cross-border movement of cannabis while maintaining the flow of legitimate travellers and goods. With more and more of us discovering our green thumbs has never felt like a more reasonable hobby. (It requires lots of time, energy, and attention? Excellent!) In Canada, legal adults can grow up to four cannabis plants in their residence and can legally purchase seeds from their provincial cannabis seller."