Mary Jane Berlin is a cannabis trade show, culture event and business marketplace rolled into one, and its organizers bill it as the world's largest cannabis event. It's where the global industry converges on Germany, and where the next chapter of European cannabis gets written. If you're an operator, investor or enthusiast trying to understand where European cannabis is heading, this is the room you need to be in.
The rise of Europe's biggest cannabis festival
Mary Jane Berlin runs on a straightforward premise: cannabis is bigger than any single sector. It lives at the intersection of medicine, agriculture, science, music and lifestyle, and an event built around it should reflect that.
The 2026 edition was the tenth anniversary. It ran June 11–14, 2026, at Messe Berlin, and ahead of the show High Times reported that organizers expected more than 75,000 attendees and more than 500 exhibitors across the four days. Legalization in Germany did a lot of the heavy lifting on growth, but the format earned it.
The organizers now call the next edition Season 2, a new chapter after the first ten years. Mary Jane Berlin 2027 returns to Messe Berlin June 3–6, 2027, and the official site promises more exhibitors and a bigger community than before.
The partner roster shows how wide the tent is. The official site lists Royal Queen Seeds as presenting partner, with platinum partners including rolling paper maker Gizeh, seed bank Barney's Farm, medical cannabis company Cannamedical and grow equipment brand Vivosun. Exhibitors span nearly every segment of the cannabis economy:
- Seed banks and genetics
- Cultivation and grow equipment
- Vaporizers
- Rolling papers and smoking accessories
- Medical cannabis businesses
- Cosmetics and lifestyle products
That range isn't accidental. It reflects how interconnected the cannabis supply chain has become, even in markets still working out their rules.
Why Berlin is the right city for this event
Berlin has always attracted operators, designers, musicians and experimenters who don't fit neatly into conventional categories. That creative infrastructure is exactly what cannabis culture needs from a host city.
Mary Jane Berlin feels embedded in the city's identity. Visitors aren't just attending a trade show; they're landing in one of Europe's most culturally dynamic capitals. The restaurants, galleries, nightlife and neighborhoods all become part of the trip. The 2026 afterparty, for example, ran at Haus der Visionäre.
That's the difference between a conference people attend and a destination people plan trips around. Berlin delivers the latter.
Germany's legal shift changed the stakes
The policy backdrop is what makes Berlin matter now. Germany's Cannabis Act took effect on April 1, 2024, and non-commercial cultivation associations followed on July 1, 2024. According to Germany's Federal Ministry of Health, adults may carry up to 25 grams of dried cannabis in public, keep up to 50 grams at home and grow up to three plants at a time for personal use.
Medical cannabis moved out of that framework and into its own Medical Cannabis Act. High Times summed up the result two years later: Germany now has the largest legal cannabis market in Europe. That's why the country's decisions ripple across the continent, and why the industry keeps showing up in Berlin.
What the exhibition floor actually looks like
Walking the floor at Mary Jane is a quick education in how fast the European market is moving. Seed banks, grow equipment, vaporizers, papers, medical cannabis companies and lifestyle brands share the same halls, so you can map an entire supply chain in an afternoon.
Companies use the exhibition to do real business: launch products, meet distributors, lock in retail partnerships, connect with investors and explore export opportunities. For emerging brands, access to hundreds of exhibitors and tens of thousands of visitors in one building is hard to replicate anywhere else in Europe.
Established operators use it differently, to reinforce brand positioning and open doors into markets they haven't touched yet. Thursday is built for that work. The 2027 edition opens with a B2B-only trade day, 11:00 AM to 6:00 PM, before the public days begin.
Education, policy and the conversations that shape the market
The B2B day pairs trade meetings with conference programming, and the 2026 edition spread talks, live podcasts and masterclasses across multiple stages. One headline moment: RAW founder Josh Kesselman was booked for a live taping of the Mary Jane Podcast on June 11, 2026, according to High Times.
For North American operators evaluating European entry, these sessions can be the most valuable hours of the trip. Europe's regulatory frameworks are fragmented. What's legal in Germany isn't necessarily legal in France. Getting that context from people actively navigating those systems is worth more than any whitepaper.
Germany's economic weight means shifts there ripple across the continent. Berlin isn't just geographically central; it's strategically central to where European cannabis policy is being shaped. Serious B2B operators can pair the trip with ICBC Berlin 2027, the International Cannabis Business Conference, which returns to the Estrel Berlin in April.
More than a trade show: culture, lifestyle and the full experience
What separates Mary Jane from a standard B2B conference is what happens after the exhibition floor closes. On Fridays and Saturdays, the festival keeps going after the fair shuts, with outdoor areas and live music. The 2026 lineup included German hip-hop names Marteria and Samy Deluxe.
That's not a distraction from the business; it's the point. Cannabis has always been a culture as much as an industry. Fashion, design and art shape how consumers engage with brands. The exhibitors who understand that invest in booth design, interactive installations and storytelling that goes beyond SKUs and wholesale pricing.
Some of the event's most valuable conversations happen away from the booths entirely. Dinners, afterparties and investor meetings create the kind of relationship-building that turns into long-term partnerships. In a market where regulations shift constantly, those personal connections carry real weight.
Planning a trip to Mary Jane Berlin 2027
The 2027 edition runs Thursday through Sunday at Messe Berlin's North Entrance on Hammarskjöldplatz. Hours on the official site:
- Thursday, June 3: 11:00 AM–6:00 PM, B2B only
- Friday, June 4: 11:00 AM–8:00 PM, festival until 10:00 PM
- Saturday, June 5: 11:00 AM–8:00 PM, festival until 10:00 PM
- Sunday, June 6: 11:00 AM–6:00 PM, festival until 6:00 PM
Know the rules before you go. Entry is strictly 18+ with valid photo ID. Smoking is banned in the halls and allowed only in designated outdoor areas, and the event is alcohol-free. Leave weapons, fireworks, large bags, glass bottles, drones, scooters, bikes and pets at home.
Public transport is the move. Take the U2 to Theodor-Heuss-Platz or Kaiserdamm, or the S-Bahn S1, S41, S42, S45 or S46 to Messe Nord/ICC. Parking at P1 and P2 in front of the North Entrance is free, but spaces go fast. The venue is barrier-free.
A global meeting point for the cannabis industry
Mary Jane Berlin is where the European scene and the international industry meet. The partner list alone mixes a Dutch seed bank, a German medical cannabis company and a German rolling paper maker.
That cross-pollination matters. Cultivation practices refined in California travel into European grow rooms. Packaging and product ideas move in both directions across the Atlantic. Mary Jane is one of the places where those knowledge transfers start. If Europe is on your list, Cannafest Prague 2026 is the next big stop this November, and U.S. operators can compare notes at MJBizCon 2026 in Las Vegas.
For any operator thinking globally, this is the event that makes the map smaller.
Frequently asked questions
What is Mary Jane Berlin?
Mary Jane Berlin is an annual cannabis expo and festival in Berlin, Germany, which its organizers bill as the world's largest cannabis event. It combines a trade exhibition, a B2B day, conference programming and a music festival into a single multi-day event. The 2026 edition, the tenth, ran June 11–14 at Messe Berlin.
When is the next Mary Jane Berlin?
Mary Jane Berlin 2027 runs June 3–6, 2027, at Messe Berlin. Thursday, June 3 is the B2B trade day, and Friday through Sunday are open to the public. Tickets will be sold through the official Mary Jane Berlin site.
Why is Germany significant for the European cannabis market?
Germany legalized adult possession and home cultivation on April 1, 2024, opened the door to cultivation associations that July and runs a separate medical cannabis framework. High Times reports that Germany now has the largest legal cannabis market in Europe. That makes Berlin a natural hub for international operators, which is a big reason Mary Jane Berlin has become an important annual touchpoint.
Is Mary Jane Berlin only for industry professionals?
No. Thursday is reserved for B2B trade visitors, and Friday through Sunday open to the public with the expo, stages, live music and festival grounds. Everyone must be 18 or older with valid photo ID. Whether you're an operator looking to close deals or an enthusiast engaging with the culture, Mary Jane is built for both.