For Adult Consumers

You must be age 21 or older to legally use recreational marijuana in Washington State.

Changes in the way marijuana is grown and processed have dramatically increased the potency of marijuana. Today users can get the same amount of THC from a single puff that people in the 1970's got from an entire joint. Marijuana-infused products, such as baked goods and sodas, are often stronger than smoked marijuana. Concentrates such as hash oil have the highest amount of THC. It is important to understand the differences in these products and how to use them safely.

The Liquor and Cannabis Board has collaborated with industry partners to produce “Marijuana Use in Washington State, An Adult Consumer’s Guide” to help consumers understand some of the differences in the types of marijuana available in retail stores as well as the laws governing its use. 

For more detailed information about marijuana, including how to understand THC levels, please go to



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