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You are a tourist from Canada or Europe, landing in Denver or Portland with dreams of exploring the world of legal cannabis. As you leave the airport, excitement builds. You see the green crosses and dispensary signs everywhere, including popular spots like Trees Dispensaries.
But then a moment of doubt hits—can you actually walk inside? Do you need a local license? Will they accept a foreign passport?
Colorado and Oregon lead the pack in U.S. cannabis markets, drawing millions of visitors each year. In 2025 alone, Colorado saw over 10 million tourists, many eyeing a “green souvenir.” This article cuts through the fog to explain federal and state rules for foreigners. You will get clear answers on what works, what doesn’t, and how to shop at Trees Dispensaries without any hassle.

