Cannabis Laws in Washington: Possession, Home Growing and Seeds
recreational cannabis is legal for adults 21 and older in Washington. Recreational cannabis legal since 2012 (I-502), one of the first two states. Adults 21+ may possess up to 1 oz. Home cultivation is NOT permitted for recreational users (medical only, 6 plants). Rules concerning cannabis seeds in Washington may differ from rules governing germinated plants, possession and cultivation. Review the official state sources and applicable local requirements before purchasing, possessing, shipping or germinating seeds.
This state has not been independently reviewed against official government sources. This information is general education, not legal advice. Cannabis seed and cultivation rules vary by state and locality and may change. Confirm current state and local requirements before ordering or germinating seeds.
Official Washington sources
This state has not been independently reviewed against official government sources. Consult your state's cannabis regulator and local ordinances before purchasing, possessing, shipping or germinating seeds.
This information is general education, not legal advice. Cannabis seed and cultivation rules vary by state and locality and may change. Confirm current state and local requirements before ordering or germinating seeds.
Washington Cannabis Law Summary
Recreational cannabis legal since 2012 (I-502), one of the first two states. Adults 21+ may possess up to 1 oz. Home cultivation is NOT permitted for recreational users (medical only, 6 plants).
Legal Status
Recreational & Medical Legal
Cannabis Seeds
Confirm current rules
This page is general information, not legal advice. Cannabis laws change frequently, always verify the current statute with an official Washington state source before acting.
Are Cannabis Seeds Legal in Washington?
Rules concerning cannabis seeds in Washington may differ from rules governing germinated plants, possession and cultivation. Review the official state sources and applicable local requirements before purchasing, possessing, shipping or germinating seeds.
Growing Conditions in Washington
May through October west of the Cascades; May through September east of the mountains. The Puget Sound region rarely freezes but lacks the heat units for late sativas. With a mild coastal climate and roughly 200 frost-free days, Washington growers tend to do best with indica-dominant hybrids, craft genetics, outdoor strains. Indoor growing is the primary method due to home grow restrictions. Western WA's mild but cloudy climate favors indoor. Eastern WA (Yakima, Tri-Cities) has excellent outdoor conditions.
Buy Cannabis Seeds in Washington
Royal King Seeds ships feminized, autoflower, and high-THC seeds from within the United States. See our Washington seed guide for climate-matched picks, or browse the full catalog.
Washington Cannabis Law FAQ
What is the cannabis legal status in Washington?+
In Washington, recreational cannabis is legal for adults 21 and older. Recreational cannabis legal since 2012 (I-502), one of the first two states. Adults 21+ may possess up to 1 oz. Home cultivation is NOT permitted for recreational users (medical only, 6 plants).
Are cannabis seeds legal to buy in Washington?+
Rules concerning cannabis seeds in Washington may differ from rules governing germinated plants, possession and cultivation. Review the official state sources and applicable local requirements before purchasing, possessing, shipping or germinating seeds.
Can I grow cannabis at home in Washington?+
Home cultivation is restricted or not permitted under current Washington law. Always confirm the latest statute before growing. May through October west of the Cascades; May through September east of the mountains. The Puget Sound region rarely freezes but lacks the heat units for late sativas.
What cannabis seeds grow best in Washington?+
Washington's mild coastal climate and roughly 200-day frost-free season favor indica-dominant hybrids, craft genetics, outdoor strains. See our Washington seed guide for climate-matched strain picks.