know the law

What you need to know from the Washington State Liquor and Cannabis Board

Cannabis in Washington State

Initiative 502 legalized marijuana use for adults however there are still a number of restrictions. It is important for you to be aware of the following laws:

Age limit

Only adults age 21 and older can purchase and possess marijuana.

Purchase limits

Adults age 21 and over can purchase up to one ounce of useable marijuana (the harvested flowers, or “bud”), 16 ounces of marijuana-infused edibles in solid form, 72 ounces in liquid form, and 7 grams of marijuana concentrates.

Buying and Selling

Marijuana can only be sold and purchased at state-licensed retail stores. A valid photo ID is required, and no one under 21 is allowed on the retail premises. Many retail marijuana stores only accept cash.

Public Use

It is illegal to consume marijuana in view of the public.


It is illegal to drive under the influence of marijuana if you have more than 5 nanograms of active THC per milliliter of blood. Doing so may result in significant legal penalties.


It is illegal to take marijuana outside of Washington. Doing so may result in significant legal penalties.

FOR MORE INFORMATION about marijuana for parents, adult consumers and additional safety tips and resources, please visit