Buy Cannabis Seeds in Washington

Embrace The Evergreen State vibe by starting your own medical garden and taking full advantage of Washington’s 6 to 15-plant patient limit. Whether you're growing in the Cascades or along the Puget Sound, we provide the hardy seeds you need to handle our marine climate and diverse growing conditions. Let’s get your Washington grow started with top-tier genetics that deliver a heavy harvest before the first frost hits.

Quick Facts for Growing Cannabis in Washington

Currently, recreational home cultivation is illegal in Washington. Home grow is restricted strictly to qualifying medical patients, who can grow up to 6 plants (or up to 15 if registered in the state medical marijuana database).

A standard season runs from late May to early October. Growers west of the Cascades must often harvest early to avoid the "Big Dark" and heavy autumn rains.

Split by the mountains. Western WA features a Marine West Coast climate (cool, wet, and humid), while Eastern WA is Semi-arid (hot, dry, and continental).

In the west, mold-resistant and fast-flowering genetics (like Dutch Treat or Blueberry) are essential. In the east, heat-tolerant strains thrive.

High (due to legal risks for non-medical residents) or Moderate for patients who must balance the short, wet finish of the Pacific Northwest.

Strict legal regulations, heavy late-season humidity leading to Botrytis (Bud Rot) in the west, and intense summer heat/water management in the east.

Navigating Washington's Cannabis Laws

Washington, known as "The Evergreen State," was a trailblazer in legalization, yet its home grow laws remain some of the strictest in the nation. If you are looking to flex your green thumb in the Pacific Northwest, it is vital to understand that recreational cultivation is currently prohibited. Only qualifying medical patients and caregivers are legally permitted to grow, provided they follow specific state mandates.

Key Rules for Home Growing

Medical Authorization: You must be a qualifying medical patient with a valid authorization form from a healthcare practitioner to grow cannabis in Washington.
Plant Count: Washington law allows authorized medical patients to grow up to 6 plants for personal use. If the patient is registered in the state's medical marijuana database, they may be authorized to grow up to 15 plants.
Possession Limits: Adult recreational users can possess up to 1 ounce of flower. However, authorized medical patients are permitted to possess up to 3 ounces of flower produced by their plants, provided it remains on the private property where it was grown.
Keep it Private: Your grow must not be visible to the public. Cultivation must take place in an enclosed area, and growers should keep their medical authorization on-site to remain compliant with state law.

Is Buying Seeds Legal?

Yes, it is. Since seeds contain less than 0.3% THC, they are classified as hemp under federal law and are legal to ship and own. Many Washington medical growers order online to find mold-resistant genetics capable of handling the unique Pacific Northwest moisture.

Check Your Lease

Even with a medical authorization, property owners and landlords in Washington retain the right to prohibit cultivation on their premises. Always review your rental agreement carefully to ensure you aren't risking your housing by starting a garden.

Disclaimer:We are growers, not attorneys. This guide is for informational purposes. Laws can change, so always double-check the latest regulations with official state resources.

Official Source:Washington State Liquor and Cannabis Board

Handling Washington's Diverse Climate

Growing in "The Evergreen State" means navigating two distinct climate zones separated by the Cascade Range. While the state offers fertile soil, the onset of "The Big Dark"—the early, grey, and rainy autumn—presents a significant challenge for outdoor growers. Success depends entirely on your specific geography.

Western Washington & Puget Sound

If you live in the Maritime climate of the Puget Sound or the Olympic Peninsula, you face cool, wet conditions and high humidity. Mold is your primary enemy. Coastal and Sound-area growers must prioritize mold-resistant strains and use training techniques to ensure maximum airflow to combat the damp Pacific air.

Eastern Washington & The Palouse

East of the Cascades, in areas like Spokane or the Tri-Cities, the climate is semi-arid and continental. Summers are hot and dry, which can lead to heat stress. However, the lack of humidity makes Sativa-dominant hybrids a great choice, as they can soak up the intense Eastern Washington sun better than dense Indicas.

The Cascades & Mountain Regions

In the higher elevations and foothills of the Cascades, the growing season is significantly shorter. The first frost can arrive suddenly in early autumn. For these regions, Autoflowers are a fantastic choice because they finish in 10-12 weeks, letting you harvest in the heat of August before the mountain chill sets in.

What to Watch Out For

Bud Rot & "The Big Dark"

As September rolls in, Washington enters "The Big Dark." The sudden increase in rain and drop in light levels creates a perfect storm for Botrytis (bud rot). Outdoor growers must be vigilant, often using temporary covers or shaking plants dry after morning mists to protect their colas.

Spider Mites & Aphids

Washington's lush landscape means various pests are abundant. Spider mites thrive in the dry heat of Eastern WA, while aphids can be a nuisance in the West. Use organic prevention methods early in the season to keep your canopy clean before the plants begin to flower.

Early Autumn Freezes

In the Inland Northwest and mountain regions, temperatures can plummet overnight in late September. If you are growing in containers, be prepared to move them under cover or into a greenhouse to protect your harvest from freezing temperatures during the final weeks.

Shop Best Strains for Washington Gardens

May

Jun to Jul

Aug

Sep to Oct

Plant the seeds

Vegetative stage

Flowering

Harvest

Where to Buy Cannabis Seeds in Washington

In the Evergreen State, we’ve been at the forefront of the legal cannabis movement for over a decade. But even with a mature retail market, finding high-quality seeds for your home garden can still be a challenge. Unlike the abundance of retail flower, Washington’s local seed options are often limited to specific medical nurseries. Generally, you have two paths: scouting for local clones and seeds at specialized events or ordering from a professional online seed bank.

Here is the breakdown of what to expect from each option so you can make the right call for your Washington garden.

Option 1: Local Washington Options

While Washington's recreational dispensaries are everywhere, they rarely carry seeds for home cultivation. Most local seeds are found through medical cooperatives or private enthusiast circles, which come with unique hurdles:

Inconsistent Access: Finding a reliable local source that actually has stable seeds in stock is hit-or-miss. You might spend weeks tracking down a specific strain only to find out the breeder is sold out.
Genetic Uncertainty: Unless you are buying from a known breeder, the "bag seed" or local gift you receive might not be the stable genetics you need to handle Washington's diverse microclimates.
Higher Search Costs: Between driving to specialized nurseries and navigating the medical-only market, the time and effort spent finding local seeds often outweighs the convenience.

Option 2: Established Online Seed Banks

For Washington growers who care about precision and a heavy harvest, buying online is the gold standard. It gives you access to a massive library of strains that are specifically bred for stability and yield in the Pacific Northwest.

Endless Variety: Whether you need a mold-resistant strain for a wet Puget Sound autumn or a fast-flowering indica to beat the early frost in the Cascades, online shops have exactly what you need.
Professional Quality Control: Dedicated seed banks source directly from professional breeders and keep their stock in climate-controlled refrigeration, ensuring high germination rates.
More Bang for Your Buck: Online banks run constant deals, offering free seeds with every order and bulk discounts that help you maximize your garden's potential while staying within your legal plant limit.

Why Washington Growers Shop with WeedSeedsExpress

We know the Washington landscape. Our experience is tailored to solve the specific problems Pacific Northwest growers face, from the oceanic West to the semi-arid East. Here is why your neighbors across the state choose us:

Genetics for the PNW: Washington weather is a tale of two climates. We highlight strains that are proven to handle the high humidity of the West—where harvesting early is key to avoiding bud rot—as well as heat-tolerant varieties for the hot summers of Eastern Washington.
Germination Promise: We don't sell duds. If you follow our guide and your seeds don't sprout, we replace them. We want your Washington garden to be a total success.
Fast, Private US Shipping: We ship directly from within the USA. This means no customs delays and no long waits. Your order arrives quickly in discreet, plain packaging that protects your privacy.
Real Grower Support: Need advice on your setup? Our customer support team actually knows how to grow in the US climate. We are here to help you get from seed to a successful harvest, whether you're in the rainforest or the desert.

We want to see your Washington garden thrive. When you choose WeedSeedsExpress, you’re getting top-tier genetics and a partner who is dedicated to your success in the Evergreen State.

Shop Washington Seeds

🏆🏆Best Autoflower Strains for Washington

Northern Lights Auto
AutoflowerFeminized
Legendary for its extreme resilience against pests and bud rot, this strain is essential for growers in the humid, maritime climate of Western Washington.
Amnesia Haze Auto
AutoflowerFeminized
This heat-loving sativa thrives under the intense sun of Central Washington while its autoflower nature ensures a harvest before the early autumn frost.
Blueberry Auto
AutoflowerFeminized
With genetic roots in the Pacific Northwest, this strain is naturally adapted to handle the fluctuating temperatures and cooler nights typical of the region.

🏆🏆 Best Photoperiod Strains for Washington

Blue Dream
PhotoperiodFeminized
A vigorous grower that thrives under the intense sun of Eastern Washington, handling high temperatures and dry conditions with massive yield potential.
Sour Diesel
PhotoperiodFeminized
Requires the long, hot growing season of the Columbia Basin to reach full potential, rewarding growers with massive, pungent harvests in the dry heat.
Jack Herer
PhotoperiodFeminized
This strain flourishes in the arid, high-desert air of the inland northwest, producing dense resin when grown in low-humidity environments.

Happy Growers Across Washington

We could tell you our advice is top-tier, but it carries more weight coming from the people actually putting their hands in the unique PNW soil. Take a look at what growers from Puget Sound to the Palouse are saying about their results in The Evergreen State.

Bought 5 got 6. All 6 geminated and growing. Yeah shipping is a bit slow to the usa but it is well worth the wait. Came in very sturdy and discrete packaging. Since this strain ive ordered 2 more strains. Got into growing for a friend with cancer who feels the cbd oils available over the counter here are far too inadaquite to be usefull. I never in a million years would have thought this would become one of my most enjoyable hobbies. Lol2020-10-14

During the growth I noticed that the sativa properties turned out to be slightly more dominant than I had expected. But by cropping the plants I haven't experienced any problems at all. The yields are very good, so if you're looking for a big yield, a weed with strong effects and sweet skunky flavors, then this is an absolute must.2021-10-27

2024-06-30

Very Happy with how my Santa Maria has grown, going on four months in different stages the first 6 plants look to be around 4/5 ounces2022-03-09

2025-01-12

2024-11-03

Reviewed on

Check out our Blog

Our blog is a definitive resource for expert articles, advanced techniques, and localized insights tailored specifically for the Evergreen State. Discover region-specific grow tips, troubleshoot common challenges like Puget Sound humidity and Yakima Valley heat, and master the art of cultivating mold-resistant strains in the West and drought-tolerant varieties in the East to perfection in Washington’s diverse climate.

Top Lists15 Highest Yielding Cannabis Strains Ever 🏆Editor’s note: This article is an updated version of our 2021 roundup of highest-yielding strains. Back then, Bubb...2025-10-01

Top Lists7 Feminized Cannabis Strains Famous for Their Unique FlavorsWhen you're smoking weed, it ain’t just about getting baked, it's about savoring the whole experience. Real grower...2025-05-28

Top Lists5 Highest Yielding Autoflower Strains For Maximum Results 🥦Autoflowers are hardy, easy-to-grow plants, but their yield is usually lacking. Many modern autoflowering strains ...2024-11-26

Top Lists10 Highest THC Weed Strains To TryA few decades ago, THC percentages used to top out at around the 10% mark. However, it's now possible to find strains th...2024-11-01

Frequently Asked Questions About Growing in Washington

Ready to cultivate in the Evergreen State? Whether you are gardening in the misty, humid Puget Sound region or the sun-drenched, arid landscapes of Eastern Washington near Spokane and Yakima, growing cannabis in Washington requires a tailored approach. This FAQ covers the essential legal requirements for medical patients, the challenges of the "Cascade Curtain" climate divide, and how to choose the right genetics for your specific zip code.

Is it legal to have cannabis seeds shipped to my address in Washington?

Yes, it is. Under federal law and the 2018 Farm Bill, cannabis seeds are classified as hemp products because they contain less than 0.3% THC prior to germination. This allows adults in Washington to legally purchase and receive seeds by mail. We ship all orders in discreet, plain packaging to ensure your privacy and guarantee secure delivery directly to your doorstep.

How many cannabis plants can I legally grow at home in Washington?

In Washington, home cultivation is strictly reserved for registered medical marijuana patients; recreational home grow remains illegal under state law. Qualifying patients who are entered into the state database may typically grow up to 6 plants for personal medical use, though a healthcare provider can authorize up to 15 plants depending on the patient's medical needs. It is vital to ensure your garden is not visible to the public and is kept in a secure area. Always keep your medical recognition card or authorization paperwork on hand to remain compliant with state regulations.

What is the best month to start growing cannabis seeds outdoors in Washington?

Washington’s climate varies wildly depending on which side of the Cascades you call home. In Western Washington, the "June Gloom" can bring damp, cool weather, so it is often best to wait until late May or early June to move plants outside. In Eastern Washington, the growing season starts earlier, but you must watch for late spring frosts in April. Regardless of your location, we recommend starting your seeds indoors in late March to give them a head start before the summer solstice.

What are the best types of strains for Washington's climate?

Your choice of strain depends on your side of the mountains. For those in the West (Seattle/Olympia), moisture is the primary concern. You should prioritize high mold resistance to protect against bud rot (Botrytis) during the humid autumn. For growers in the East (Yakima/Tri-Cities), you need strains that are drought-tolerant and resistant to spider mites, which thrive in the hot, dry summer heat. Sativa-dominant hybrids often perform well in the West due to their airy bud structure, while hardy Indicas can handle the intense heat of the Eastern high desert.

Are autoflowers a good choice for beginner growers in Washington?

Autoflowers are a brilliant choice for the Evergreen State, especially for medical patients looking for a quick harvest. In Western Washington, autoflowers allow you to harvest in July or August, completely bypassing the rainy "Croptober" weather that often leads to mold. In Eastern Washington, their fast life cycle allows you to beat the most extreme late-summer heat waves. Their compact size also makes it much easier to keep your garden discreet and compliant with state visibility laws.

More Awesome Washington Strains to Grow

Ready to level up your next grow in The Evergreen State? We’ve curated a collection of cannabis seeds specifically for Washington’s unique climate and growing conditions. Whether you’re dealing with the wet and cool Puget Sound or the high-desert heat of the Yakima Valley, these picks are built to thrive from the Olympic Peninsula to the lands east of the Cascade Mountains. Please remember that in Washington, home cultivation is currently permitted only for authorized medical patients.