Cannabis Regulations in Seattle: What’s Legal and What’s Not?
The topic of this story was provided by our review partner, Originated Media; SagaCity Media has editorial oversight over specific content.

As one of the first major cities to embrace cannabis legalization, Seattle has established a comprehensive framework governing the use, sale, and cultivation of cannabis. Understanding these regulations is essential for both consumers and growers to navigate the evolving landscape of cannabis in Washington state.
The State of Washington legalized recreational cannabis use in 2012 with the passage of Initiative 502 (I-502). This law set the foundation for the regulated market, allowing adults 21 and older to possess and use cannabis. Seattle adheres to these state laws while also implementing its regulations.
Growers must obtain a license from the Washington State Liquor and Cannabis Board (LCB ) to cultivate cannabis legally. This includes meeting specific requirements regarding security, location, and operational procedures.
What’s Legal and Not Legal for Consumers?
- Possession Limits: Adults 21 and older can legally possess up to one ounce of cannabis flower, 16 ounces of cannabis-infused products in solid form, or 72 ounces in liquid form.
- Consumption: Cannabis consumption is allowed in private spaces. Public consumption remains illegal, which means users should be mindful of their surroundings. Seattle also prohibits cannabis use in public parks and areas where smoking tobacco is banned.
- Purchasing: Licensed retail stores can sell cannabis products. Seattle has numerous dispensaries where consumers can purchase a variety of cannabis strains, edibles, concentrates, and other products. All purchases are subject to a sales tax, which can reach up to 37 percent.
- Cultivation: Personal cultivation is not allowed for recreational use. Medical cannabis patients registered by the state can grow up to six plants and possess up to eight ounces from their plants in their domicile. Patients with medical cards not registered can grow up to four plants and possess up to six ounces of usable cannabis from their plants.
- Medical Use: Washington has a separate medical cannabis program that provides patients with additional protections and access. The medical cannabis cooperative law replaced the cannabis collectives law in 2016. According to the law, “Up to four medical cannabis patients or their designated provider may join together to grow cannabis for the patients’ personal use. Every member must be entered into the medical cannabis authorization database and have a medical cannabis recognition card. The total number of plants authorized for the participants may not exceed 60 plants. Cooperatives must register with the LCB and follow all regulations.”
- Driving Under the Influence: It is illegal to drive while impaired by cannabis. Washington has strict DUI laws, and drivers can face serious legal consequences if caught driving under the influence of cannabis.
- Interstate Transport: Transporting cannabis across state lines remains illegal, even if both states have legalized it. This includes bringing cannabis to or from Oregon or California.
- Employment Protections: While Washington law protects medical marijuana patients from discrimination in employment, recreational users do not have the same protections. Employers may enforce drug-free workplace policies, and employees can be terminated for using cannabis, even during off-hours.
What’s Legal and Not Legal for Growers?
- Cultivating cannabis without a proper license is illegal. This includes selling cannabis without the necessary permits.
- Exceeding Plant Limits: Growers must adhere to the plant count limits, which vary based on whether they are growing for personal use or as a licensed producer.
- Concentration Limits: Certain products, particularly concentrates, are subject to specific regulations. Products with a THC concentration above a certain level may be restricted or require special licensing.
- Violation of Security Regulations: Licensed growers must comply with strict security protocols. Failure to do so can result in penalties, including loss of license.
- Compliance and Enforcement: Seattle has established local regulatory bodies to ensure compliance with cannabis laws. The LCBoversees the licensing of cannabis businesses, including growers, processors, and retailers. They conduct regular inspections and can impose penalties for non-compliance, which can range from fines to license revocation.
- Land Use and Zoning Law: Cities, towns, and counties in Washington state can choose to prohibit or designate appropriate zones for state-licensed cannabis businesses because Washington local governments have the authority to enact legislation regulating land uses within their jurisdictions. However, the Washington State Liquor and Cannabis Board has final authority over whether to grant or deny a state license to operate a cannabis business in Washington state.
Related Content:
Best Delta 8 Disposables of 2025: Top 5 Delta 8 Vape Pens for a Convenient THC Experience
The following link will take you to products related to this story that may be of interest. If you choose to purchase a product, we may receive an affiliate commission. seattlemet.com/advantage