WA / State law overview

Washington

Washington allows adult purchases and possession within limits. General adult-use home growing is not permitted.

Adult-use rules reviewed

Sources reviewed September 30, 2026. Coverage: Adult-use possession and cultivation, not all legal questions.

Adult-use age21 or olderOfficial source

Flower possessionUp to 1 ounce usable cannabisOfficial source

PurchasesUse state-licensed retailers; product categories have separate limitsOfficial source

Home cultivationOnly qualifying medical patients or designated providers with valid authorization; medical limits varyOfficial source

Details worth checking

Public consumption is prohibited. Vehicle storage and sealed original-packaging requirements apply.
Check hotel and rental-property policies directly. Medical authorization is separate from adult-use retail access.

Official sources

Regulators & contacts

Agency information checked September 30, 2026.

Washington State Liquor and Cannabis Board (LCB)

Licenses and regulates cannabis producers, processors, and retailers, including compliance, enforcement, and inventory reporting. Patient authorization and the medical cannabis database have a separate health department route.

Washington State Liquor and Cannabis Board (LCB) — official information and contact routes

Washington State Department of Health — Medical Cannabis Program

Oversees medical cannabis authorization guidance, the medical database, and certified medical cannabis consultants.

Washington State Department of Health — Medical Cannabis Program — official information and contact routes

Cardcierge

Medical cannabis card information, registration, published fees, and evaluation providers for Washington.

View medical card information

General information, not legal advice. Laws, effective dates, and local policies change. Confirm the applicable rules with official sources before acting.