Best Seed Banks: Where to Buy Marijuana Seeds Online with Germination Guarantee

By Katie Little

Some of the links in this article are affiliate links, meaning we may earn a small commission if you click and make a purchase. We only recommend products and brands we genuinely trust, based on research, experience, and user feedback. Our goal is to provide helpful, reliable information so you can make informed choices about cannabis cultivation. Ensure you’re complying with your local regulations before buying weed seeds.

Growing healthy, productive cannabis plants is within reach for everyone, as long as you have the right cannabis seeds and tools to work with. However, finding reputable sources for high-quality marijuana seeds and strains comes with its own challenges.

To make your search easier, we’ve identified the best places to purchase marijuana seeds. Each of our top picks stands out for the quality and reliability of their weed seeds, with Seed Supreme leading the way, followed by five other impressive stores.

We’ll take a closer look at all six of these options and also offer useful insights into how to choose cannabis seeds to match your specific cultivation needs.

Top Seed Banks to Buy Marijuana Seeds

With the sheer variety of cannabis seeds available today, selecting the perfect strain can be daunting. Each variety comes with its own unique growth requirements, flavor profiles, and yield potentials.

Knowing where to begin can make all the difference between a successful harvest and a frustrating experience. Our comprehensive list takes the guesswork out of choosing the best marijuana seed bank for your needs.

1. Seed Supreme – Best Marijuana Seed Bank Overall

  • A range of high-CBD and high-THC seeds
  • High-quality cannabis seeds from top breeders
  • The biggest selection of weed seeds in the USA
  • 100% Germination Guarantee is included with every order
  • Free seeds on every order
  • 10%OFF CODE: 10SEEDS

Seed Supreme is the most renowned name in the cannabis industry. No seed bank can match the sheer size of its cannabis strain selection, with 350 cannabis seed varieties sourced from top-tier partnerships with more than local and international top cannabis breeders like Happy Valley Genetics, DNA Genetics and more.

If you are shopping at Seed Supreme, you are guaranteed to find options that match your exact needs as a cannabis cultivator. Whether you’re searching for autoflowering, feminized, or unique landrace strains, there’s something for every type of grower.

All of their seed options are organized into useful categories like Beginner Seeds or High THC options. Experienced cultivators will enjoy their range of THC heavy-hitters like Godfather OG and Acapulco Gold, which produce dense resinous buds, generous yields, and THC levels that can exceed 30% Customers can also explore cannabis seeds that produce terpene-rich cannabis plants like Black Cat Kush and Sour Diesel.

When you shop here, you will find a variety of deals and reduced prices on most products. Customers receive free marijuana seeds with any purchase exceeding $50, while regular customers who spend $200 or more get ten bonus weed seeds. First-time buyers are also welcomed with a 5% discount.

Seed Supreme also steals the show with its fast and discreet shipping, and most orders arrive within five business days. Every shipment includes easy tracking information to follow your package every step of the way, and orders above $90 qualify for free shipping.

The company’s 100% germination guarantee means that customers can request seed replacements if their pot seeds fail to sprout, as long as the recommended germination process was followed.

>> Get the best marijuana seeds at Seed Supreme

2. Homegrown Cannabis Co. – Best Seed Bank for Autoflower Seeds

  • Germination Guarantee valid for 90 days
  • Get a 12-pack of weed seeds for just $99
  • Huge range of Buy One Get One deals
  • Connections with Victoria Rouland and Kyle Kushma
  • Multiple payment options for enhanced privacy

While Homegrown Cannabis might not have an extensive collection at Seed Supreme, it makes up for this with its comprehensive resources for growers of all levels. These educational guides have been crafted by industry legends like Kyle Kushman and Ed Rosenthal, and offer all the information you need for specific strains to take them from germination to harvest.

Their collection includes over 500 unique strains, making it a top choice for medical and recreational growers alike. The company’s focus on authentic, in-house genetics and educational support makes it a reliable option for all cannabis enthusiasts looking for pot seeds and cultivation advice in one place.

Homegrown Cannabis Co.’s focus has always been strong in-house genetics instead of quantity, and their catalog includes over 500 unique cannabis seed strains. You will find feminized cannabis seeds, autoflower seeds, and regular seeds here, as well as a number of high CBD and THC strains.

To simplify decision-making, the company offers a variety of mix packs that are grouped according to certain themes: “High THC Mix”, “Sativa Energy Mix”, and “Beginner-Friendly Varieties”.

At Homegrown Cannabis Co., new buyers can look forward to a 10% discount on their first purchase, and regular subscribers benefit from numerous sitewide discounts. The company also partners with Oaksterdam University and offers a 10% discount on courses for marijuana cultivation with the promo code “homegrown.”

The company promises to deliver orders within 4 to 9 days, and each order comes in unmarked, plain wrapping. Customers can opt for tracked shipping for $10.99, while non-tracked shipping remains free for orders above $50.

The comprehensive germination guarantee is another highlight that demonstrates the company’s confidence in its products. Unsupported cannabis seeds that fall within the 90- to 120-day germination period can be replaced as long as you have used the recommended paper towel germination method accurately.

>> Get the best marijuana seeds at Homegrown Cannabis Co.

3. Herbies - Enjoy Fast and Discreet Shipping

  • Free seed with every purchase
  • Competitive pricing starting as low as $2
  • Over 2,000 available cannabis strains
  • Quick, discreet global delivery (2-10 days)
  • Customer service responses are limited to business hours

Herbies Seeds has one of the longest histories in the cannabis seed industry, with over two decades of experience. During this time, they have gotten customer satisfaction down to an art, with their excellent customer service, fast shipping, and generous promotions.

The company offers a range of over 2,000 strains from 120 of the best breeders. Their collection includes feminized seeds that produce only female plants, autoflowering seeds for multiple harvest cycles, and landrace options for heritage genetics lovers.

Strains are organized using easy-to-understand metrics like flowering time, yield potential, plant height, and terpene profiles, offering a user-friendly experience when selecting marijuana seeds.

You will find a promotions section that’s packed full of amazing offers. One of their most popular offers, according to anonymous verified customer reviews, is their tiered discounts, with larger discounts for bigger orders. In addition, every $20 you spend here rewards you with a complimentary seed.

The company delivers to over 100 countries, with US orders usually taking as little as 2 to 4 business days. Every order comes with free and reliable tracking services to help you follow your package on its journey to you.

Herbies Seeds provides a valuable 100% germination guarantee, which is just another testament to the quality of the weed seeds offered here.

Customers who have used this facility have often commented on how smooth the replacement process was, especially in comparison to most other seed banks that tend to give customers the runaround when they use the replacement option.

>> Get the best marijuana seeds at Herbies

4. Royal Queen Seeds – Ideal For Exclusive F1 Hybrid Genetics

  • Unique F1 hybrid strains available for purchase
  • Free shipping with an average delivery time of seven days
  • Over 37,000 verified customer reviews
  • Standard shipping averages three days
  • Limited variety of CBD seeds available

Quality over quantity seems to be the motto at Royal Queen Seeds (RQS). During their 25 years in the business, they have created around 120 strains, each bred with unique traits and characteristics.

Each of these options offers resilience, potency, and adaptability. Their F1 hybrids, in particular, offer unmatched genetics for powerful and reliable growth.

The exclusive F1 hybrids set this seed seller apart. Their most popular varieties are the Apollo F1, Medusa F1, Titan F1, and Milky Way F1, which are all bred for high THC potency, reliability, and large harvest potential.

There are also great feminized seed options like Green Gelato, HulkBerry, and White Widow that offer classic tastes and high yields, while autoflowering seeds such as Royal Creamatic, Pink Runtz Auto, and Trainwreck Automatic are prized for their fast flowering times.

With every purchase over $25, RQS buyers receive free seeds along with branded merchandise like grinders, rolling papers, and stickers. The company’s Growers Club loyalty program is also noteworthy, and offers shoppers points that can be redeemed for significant discounts or products.

Royal Queen Seeds uses the USPS 1st Class Parcel Service for U.S. orders, and most parcels arrive within 4 to 9 business days using the USPS 1st Class Parcel Service. Customers also have the choice of using USPS expedited deliveries.

If there are any issues with delivery, you can always rely on their great customer service to help with delivery problems.

RQS backs every seed with its 100% germination guarantee, and customers can easily request replacements at no additional cost.

>> Get the best marijuana seeds at Royal Queen Seeds

5. ILGM – Most Comprehensive Germination Guarantee

  • Free shipping across the USA
  • Save $10 on your first ILGM order
  • Affordable grow kits and tools are available
  • 24/4 weed growing support provided
  • Live Chat support is unavailable for customer assistance

ILGM not only offers a solid collection of high-quality cannabis seeds, but they have also created one of the most useful cannabis cultivation resources, their iconic Grow Bible.

This comprehensive guide contains a vast wealth of information about germination, nutrition, low-stress training techniques, and more. Armed with knowledge, even the most novice of growers can successfully harvest large yields of cannabis.

ILGM offers an impressive variety of strains, which are carefully categorized into easy-to-understand sections such as High-Yield, Beginner, and Autoflower.

Their exclusive collaboration with Phylos Bioscience has helped to create unique and exotic strains like Pineapple Donut, celebrated for its tropical pastry fragrance, and Yuzu Sour, known for its sharp citrus tones.

These marijuana seeds contain rich terpene concentrations (1.7% and 1.8%, respectively), resulting in layered and sophisticated flavor profiles.

At ILGM, you can stretch your cannabis seed budget further than you imagined. Their best-known offer is the “Buy 10, Get 10 Free” deal, which includes all of their best-selling strains such as Northern Lights and Blue Dream, making it a favorite among recurring customers. New shoppers are also welcomed with a $10 discount on their first order, and being a subscriber of the site also qualifies you for further discounts.

Orders sent within the U.S. are always shipped for free, regardless of size, with delivery between 3 to 5 business days. ILGM offers a 100% germination guarantee on all seed types, from feminized to autoflowering to high-CBD strains. Customers have an amazing 12 months after purchase to claim a replacement for any weed seeds that fail to sprout.

>> Get the best marijuana seeds at ILGM

6. Seedsman – Best for Cannabis Clones

  • WELCOME10 promo code offers a 10% discount
  • Browse affordable Pick+Mix packages
  • An extensive range of resources for growing marijuana
  • More than 7,700 verified customer reviews
  • Live Chat operates within limited hours

Seedsman has quite an innovative business model, and they focus more on cannabis genetics. Their commitment is to preserve rare and heirloom marijuana strains. They also offer a great deal of free cannabis growing resources, including guides and informative blog articles to help cultivators of every level.

Seedsman’s catalog includes exclusively bred strains and rarities such as Zkittles Fast Feminized and Gorilla Glue, which are known for their potency and strong effects. They have also cultivated new strains, like specialized CBD strains, such as Purple Star, Lucky Lucy, and Glu, which are highly sought after for their powerful effects and therapeutic benefits.

Seedsman also provides cannabis seeds with unique cannabinoid content, such as CBG-major, THCV-rich, and CBDV-dominant strains, which meet a slew of wellness needs with their anti-inflammatory and neuroprotective benefits.

Every order at Seedsman, regardless of its value or size, qualifies for free weed seeds, and there are also bulk purchase and subscription discounts. First-time customers are welcomed with a 10% discount when they use the promo code WELCOME10.

Seedsman offers quick delivery in a timely manner of around 2 to 5 business days for customers in the US. All packages are discreetly packaged in secure, unmarked wrapping to protect your privacy.

Seedsman backs all the seeds in their catalog with a useful 90-day germination guarantee. This return policy applies to all seed types, including feminized, autoflowering, and regular cannabis seeds.

>> Get the best marijuana seeds at Seedsman

What is a Marijuana Seed Bank?

In simple terms, an online marijuana or weed seed bank is a platform that sells a variety of cannabis seeds directly to customers. There are no middlemen involved in the process, since they do not use traditional physical stores.

These businesses play an essential role in preserving the genetic diversity of cannabis plants, offering unique options that may not be readily available locally.

By maintaining an extensive collection of good quality seeds, these banks can offer lower prices than regular retail stores. This makes it more affordable to grow cannabis for recreation, therapeutic use, or breeding purposes.

With their advanced breeding techniques, seed banks offer high-quality marijuana seeds that serve as an excellent starting point for a smooth cannabis growing journey.

Benefits of Purchasing Marijuana Seeds Online

We have already touched briefly on the benefits of buying cannabis online, so let’s take a closer look at these benefits.

Larger Variety

When you buy cannabis seeds online, the variety offered often surpasses that of physical stores.

Unlike traditional sellers, online seed banks offer a diverse range of cannabis seeds, including premium cannabis seeds, feminized cannabis seeds, autoflower seeds, and highly sought-after options like high THC feminized seeds, which produce only female cannabis plants.

Many online seed banks specialize in strains with unique flavors and cannabinoid profiles, such as high CBD varieties, meaning growers will have a much better chance of finding the perfect strain for their individual needs.

Convenient Home Delivery

Online shopping is all about convenience, and the same rings true for cannabis seeds. You can browse, compare, and select the best strains, like Sour Diesel or White Fire OG, all from the comfort of your own home.

You never have to leave your home, as once your order is processed, it can be delivered directly and discreetly to your doorstep.

Special Deals and Discounts

Online sellers frequently provide generous promotions for new and loyal buyers. This makes it easier for budget-conscious cultivators to grow and harvest cannabis plants.

For instance, some platforms offer loyalty programs, free cannabis seeds, or bulk deals to help growers save on high-quality feminized seeds or autoflower seeds.

Free Educational Resources

Another added pro to shopping online is that these kinds of stores also provide useful resources and support to all kinds of growers, including first-time growers and seasoned experts, by providing tools like cultivation guides, forums with other growers, and step-by-step videos.

Things to Look for When Choosing Marijuana Seeds

Now that we are clear on the benefits of buying marijuana seeds online, we will explore the kinds of aspects you need to consider when shopping for your perfect strain.

Indica, Sativa, or Hybrid?

When selecting weed seeds, it’s important to consider whether you want Indica strains, Sativa strains, or hybrid seeds, as each of these options offers different benefits.

Indica strains are famed for their calming and relaxing properties, while Sativa seeds produce cannabis plants that deliver uplifting and energizing effects, and are better for daytime use.

Hybrids, on the other hand, combine traits from both Indica and Sativa, and offer a variety of effects that depend on the ratio of Indica to Sativa traits.

Traditional vs. Autoflowering Cannabis Seeds

Traditional or regular seeds differ from autoflower varieties because they need manual adjustments in light cycles to transition from the vegetative stage to the flowering stage.

However, autoflower seeds shift automatically. This makes these pot seeds reach the harvest stage much faster, and they are also easier for beginners to manage.

Genetic Stability and Seed Quality

It’s always a good idea to choose seed banks that have a good track record with popular and proven strains and are known for their exceptional quality. These cannabis seeds are carefully bred over generations for good germination rates, high yields, and resilient genetics.

>> Get the best marijuana seeds at Seed Supreme

Types of Cannabis Seeds

There are a number of different kinds of cannabis seeds, and knowing about their unique traits and benefits is also essential if you are a cannabis cultivator.

Indica Cannabis Seeds

Indica seeds grow into short, stocky plants with wide, dark green leaves and dense buds. These strains are ideal for indoor growing environments due to their compact structure and relatively fast flowering times (typically 7–9 weeks). Their genetics originate from mountainous regions like Afghanistan and Pakistan, making them naturally hardy and suited for cooler climates.

Indica strains are widely celebrated for their calming and sedating effects, often used to promote relaxation, reduce anxiety, alleviate pain, and improve sleep quality.

Popular Indica strains:

  • Granddaddy Purple – Deep purple buds and heavy body effects make this a favorite for sleep and pain relief.
  • Bubba Kush – Known for its strong tranquilizing properties and earthy chocolate flavor.
  • Afghan Kush – A pure landrace Indica famous for its soothing, couch-locking effects.

Sativa Seeds

Sativa seeds produce tall, lanky plants with narrow leaves and more airy bud formations. Their flowering cycle is longer (10–14 weeks), making them better suited for outdoor or greenhouse cultivation in warmer climates with long growing seasons. Sativa genetics hail from regions near the equator, such as Southeast Asia and Central America.

Sativa strains provide an energetic, uplifting “head high” that enhances creativity, focus, and sociability—ideal for daytime use.

Popular Sativa strains:

  • Jack Herer – A legendary strain named after the cannabis activist, known for its energizing and clear-headed effects.
  • Durban Poison – A pure Sativa with sweet, anise-like flavors and potent cerebral stimulation.
  • Green Crack – Highly energizing, perfect for fatigue or ADHD-like symptoms.

Hybrid Seeds

Hybrid seeds combine the best of Indica and Sativa genetics, offering a range of effects and cultivation benefits. They can be bred to be Sativa-dominant, Indica-dominant, or balanced 50/50, depending on the breeder’s goal. Many hybrids are developed for improved disease resistance, high terpene profiles, or faster flowering cycles.

Hybrids offer versatility to both growers and users, often delivering effects that start with an uplifting head buzz followed by a relaxing body high.

Photoperiod Seeds

Photoperiod seeds are traditional cannabis varieties that require a change in the light cycle, usually to 12 hours of darkness and 12 hours of light, to initiate flowering. This allows growers to control the plant’s vegetative growth, maximizing size, yield, and resin production. Photoperiod strains are ideal for advanced cultivators using techniques like topping, mainlining, or ScrOG to fine-tune their crop.

Notable photoperiod strains include:

  • Northern Lights – A legendary indica known for its heavy resin production and calming effects.
  • Blue Dream – A balanced sativa-dominant hybrid popular for its uplifting effects and ease of cultivation.
  • Gorilla Glue #4 (GG4) – A potent hybrid with high THC levels and sticky, trichome-heavy buds.

These strains thrive in controlled environments where growers can manipulate light exposure to optimize results.

Autoflower Seeds

Autoflowering seeds switch from vegetative growth to flowering automatically after a set period, typically 2–4 weeks, regardless of light schedule. Their fast lifecycle (often ready in 8–10 weeks from seed to harvest), compact stature, and resilience make them perfect for beginners, small grow spaces, or outdoor conditions with short seasons.

Popular autoflower strains include:

  • Amnesia Haze Auto – A fast-flowering sativa with energetic, cerebral effects.
  • Girl Scout Cookies Auto – A sweet, potent hybrid known for its relaxing high and dessert-like aroma.
  • White Widow Auto – A robust, balanced strain famous for its crystal-covered buds and well-rounded high.

These strains are favored for quick turnarounds and low-maintenance growing, with some growers completing multiple harvests per season.

Feminized Cannabis Seeds

Feminized seeds are specially bred to eliminate male chromosomes, resulting in plants that are virtually guaranteed to be female. Since only female cannabis plants produce cannabinoid-rich buds, feminized seeds save time, space, and effort by removing the need to sex and cull plants. They are ideal for growers focused on flower production and maximizing bud yield and potency.

Top feminized strains include:

  • Wedding Cake – A potent indica-leaning hybrid with dessert-like flavors and heavy yields.
  • Zkittlez – A flavorful, fruity strain known for its vibrant colors and balanced effects.
  • Bruce Banner – A powerful hybrid with high THC levels and uplifting, euphoric effects.

Feminized versions of these strains offer reliability and consistency for both home growers and commercial operations.

FAQs

Take a look at some of the most common questions regarding this topic.

What Seed Bank Has the Best Genetics?

Seedsman is widely recognized for its exceptional cannabis genetics, having won over 200 awards for its exclusive strains. This makes them a top choice for growers seeking reliable and abundant crops.

What Is the World’s Largest Cannabis Seed Bank?

Seed Supreme is considered one of the largest cannabis seed banks in the world, with over 4,000 strains sourced from 1,500 breeders.

Which is the Best Seed Vendor for Rare Cannabis Seeds?

Royal Queen Seeds is an excellent choice for rare cannabis seeds, including F1 hybrids with exclusive genetics.

Can I Get Weed Seeds Shipped to My State?

Yes, many seed banks, including Seed Supreme and ILGM, ship cannabis seeds discreetly across the U.S.

How Do I Know If a Marijuana Seller Is Reputable?

A reputable marijuana seed seller will have verified customer reviews, a germination guarantee, and secure payment options. Look for seed banks like Seed Supreme or ILGM, which also offer detailed strain information and responsive customer support.

How Do I Store Marijuana Seeds?

Store marijuana seeds in a cool, dark, and dry place, ideally in an airtight container. For long-term storage, refrigeration at a stable temperature of around 40°F (4°C) with low humidity is recommended to maintain seed viability.

Final Thoughts

With the right seed bank, growing cannabis can be both an enjoyable and rewarding journey.

Our top recommendation, Seed Supreme, is an excellent starting point for new growers. Their extensive seed selection, great customer service, and valuable germination guarantee provide peace of mind and confidence for beginners.

We also recommend that you check out the other equally impressive options on our list. Whichever seed bank you choose, remember to store your seeds properly for long-term viability and happy growing!

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Katie Little

Katie Little is a content strategist and producer specializing in regulated industries. With a focus on clarity, compliance, and discoverability, Katie helps brands grow their digital presence in competitive spaces.