Washington State Marijuana Laws

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.

No Resale or Giveaways – It remains a felony for anyone who is not a licensed retailer to sell or provide marijuana to anyone else. Providing or selling marijuana to a minor under the age of 18 can result in up to 10 years in prison and up to a $10,000 fine.

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

Driving – 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.

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

Reference: http://lcb.wa.gov/mj-education/know-the-law