- ID required. You must be 18+ and carry valid ID at all times.
- Maximum 5 grams per person per visit under Dutch tolerance policy.
- Cash only in most Dutch coffeeshops. Bring euros.
- No alcohol. Dutch law prohibits selling alcohol and cannabis under the same roof.
- No hard drugs. Strictly prohibited under the gedoogbeleid.
- Do not transport cannabis across any Dutch or international border.
About Greenhouse Effect Groningen
Greenhouse Effect serves the Paddepoel neighbourhood in northern Groningen, one of the city's student-dominated residential areas. Since opening in 2013, the shop has established itself as the preferred option for students at the nearby university campuses who want a reliable, affordable neighbourhood coffeeshop.
The interior is straightforward and functional: comfortable seating, adequate lighting, a friendly bar staff, and a menu board that is easy to read. Greenhouse Effect does not aspire to be Groningen's most sophisticated coffeeshop; it aspires to be Paddepoel's most reliable one.
The menu is focused and affordable, typically running to 10 to 14 varieties of flower plus three or four hash options. Prices are at the accessible end of the Groningen market, making Greenhouse Effect one of the best-value options in the city.
Paddepoel is a predominantly student neighbourhood with good bus connections to the city centre. The nearby Zernike complex, home to several faculties of the University of Groningen and the Hanze University of Applied Sciences, ensures a steady stream of student customers throughout the academic year.
Dutch Coffeeshop Rules at a Glance
The Netherlands operates under the gedoogbeleid, a tolerance policy permitting licensed coffeeshops to sell cannabis to adults under strict conditions:
- 18+ with valid ID required for entry
- Maximum 5 grams per visit per coffeeshop
- Personal possession of up to 5 grams is tolerated
- No consumption near schools or in prohibited public areas
- Taking cannabis across Dutch borders is illegal
Flying Home Soon?
Cannabis remains detectable in your system for varying periods. See our full drug test guide for detailed timelines covering urine, blood, and hair testing.