Genetics play a critical role within the cultivation of cannabis, and thereafter during the consumption phase - dictating both the flavor and smell. Each strain of marijuana is best explored personally, to experience the different taste profiles and effects. However even within the same marijuana strain, there are large amounts of discrepancies with their genetics - and this is where the reputable seed breeding companies come into play: There are countless factors leading to the production of seeds with strong genetics and with the addition of new strains each year it is not uncommon to find unstable genetics. These are strains which may feature a higher rate of hermaphrodite appearances due to the weaker and vulnerable genetics.

By using a reputable seed company, you will get the most potential out of your cannabis plants, and avoid unnecessary hardships. For these companies, their reputations are on the line. This leads to multiple rounds of quality assurance before a strain ever makes it to retail sale - even if it means a delay. Take a look at the top 150 marijuana seed companies found below - click into a company to learn more about the seeds and strains that they offer.

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Dinafem Seeds is a company which was created by the user community of cannabis. Before a creation it had a year of technical research, the team carefully prepared and made the first experiments of producing feminised seeds. Dina..

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Barney's Farm has won many international awards for the flawless quality and stability of its products and is a recognized world leader in the production of top quality seeds. Barney's Farm was founded since the early 1980's after De..

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Royal Queen Seeds (RQS) is fast growing cannabis seed company from the Netherlands. The group of breeders  decided to create their own range of cannabis to offer quality feminized, autoflowering and medical seeds at a good price..

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The Bomb Seeds provides the best mix of strength, power, top-quality and high productivity. The breeder uses the world famous selections to produce the explosive Bomb genetics. The Bomb Seeds cannabis is grown in the Netherlands unde..

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Specializing in potent medicinal strains since 2003, DNA has won over 150 awards for their contributions to the cannabis industry all around the world. Starting life in California, DNA Genetics’ founders enjoyed the best selections..

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Sweet Seeds  is Connoisseur-Grade Feminized SeedsAfter conquering Spain with their cannabis seeds they moved to conquer the whole of Europe. They listen to both the cultivator and the public together, enabling them to combine seeds ..

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Sensi Seeds is a legendary seed company founded by Ben Dronkers, which in 1975 began to cultivate medicinal marijuana. He travelled the world in search of the best cannabis. Such expeditions took him to places like the Himalayas and ..

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It is legendary Dutch seed company won over a dozen High Times Cannabis Cups.T.H. Seeds was founded in 1993, making it one of the oldest seed companies in Holland.  T.H. Seeds quickly gained an excellent reputation among the experie..

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Breeders, who founded the company, have more than 10 years of experience in the most famous seed companies. Ministry of Cannabis has manufacturing and test rooms in 3 different countries. The company has two main objectives: the firs..

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Humboldt Seed Organization from Northern California is a group of breeders producing one of the best genetics on the planet. Currently the company has one of the biggest libraries.Humboldt Seed believes in the importance of building..

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Seedsman is a Marijuana Seeds breeder and online seedbank. Seedsman has been selling seeds online since 2003. The company is one of the best online seed's shops. The range of quality cannabis seeds includes over 1500 strain..

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Founded in Spain in 90's, today Kannabia is one of the leader in cannabis industry in country. Currently Kannabia Seeds keeps growing. Kannabia Seeds Company's works devoted to growers. The seeds are the result of an intense selectio..

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Brothers Grimm Seeds was established by MrSoul and his partner Sly in 1996. It was resurrected after 12 years break. Brothers Grimm became known for its quality, stable, effective cannabis genetics. The strains have fast flowering an..

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CBD Seeds offers original classic varieties. Professionals with extensive experience from around the world working in the field of selection and breeding have created feminized seeds of varieties and quality crosses. The first task w..

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G13 Labs company takes  history in the north of the United Kingdom  to the late 1980’s, where the original Agent set up an underground collective, which then made its way to Amsterdam where G13 Labs formed connections with variou..

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Expert Seeds is the collective of growers are cultivating and selecting marijuana for many years. So it has decided to create its own company that will specialise in selective breeding of the worlds most famous strains. Expert Seeds ..

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Spanish seedbank Medical Seeds was founded in Barcelona about 9 years ago. The company's mission to cultivate high-quality seeds based on the experience of testing genetics from around the world. Medical Seeds focuses on the medical ..

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VIP Seeds is a seed bank from Spain.  It has been created in reply to the needs of our customers to provide great quality cannabis with affordable prices. Their varieties are the result of European genetics and the experience they g..

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The Canuk Seeds ensures the highest quality of cannabis seeds available on the planet. The company is based on the beliving that success is in the right genetics. Therefore the breeder provides the best world genetics available nowad..

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Humboldt Seed Company's goal is providing the top-quality medicinal cannabis seeds to medical and recreational users who want to cultivate the medicines by themself. The company was founded in California. It delivers high quality see..

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Exotic Seed produces unique and innovative cannabis seeds using the best of Dutch, American and Spanish genetics. The breeder has over 20 years of experience and strong roots in the international cannabis family. It took 13 prizes in..

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Seed Junky Genetics are creators of the world famous Wedding Cake and Kush Mints. They have 34 different strains on sale including Animal Cookies, Gelato and  Sunset Sherbet

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House of the Great Gardner is a well-known seedbank that specializes in breeding medical strains for more than 10 years.

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A world-known Brand, famous for their absolute champions, most prominent modern age variety of strains.