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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Seedism was founded in 2007 three cannabis genetic enthusiasts who worked for numerous other seed banks and who supported the organic garden of the Cannabis College in Amsterdam. Currently, Seedism unit  breeders from all over the w..

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Shaman Genetics was founded after several years of cultivating, crossing and improving of world famous cannabis genetics.  The multiple selections and different combinations of this genetics provide the best variety for all growers ..

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MSNL is a cannabis seed bank that strated its history in 99's. The professional grower command created a big collection of outstanding strains that took a lot of awards. All marijuana seeds are designed by the best and most experienc..

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Philosopher Seeds entered the market in 2008 hand in hand with Alchimia Grow Shop. But his history starts since the 90's with cannabis breeding projects. Its goal is to keep, breed and share the best genetics. The seedbank provides h..

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KC Brains based in Holland. The company produces the highest quality Feminised and Regular seeds. KC Brains is one of the cheapest seed banks around. Some pot seeds also became popular in the world. For example, The Northern Light Sp..

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The Plug Seedbank is a group of professional cannabis growers with years of experience and knowledge in the industry. It has a lot of awards in different nominations. It uses the worlds most stable genetics from the best of the best ..

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Dark Heart Nursery is a cannabis breeder that produces top quality clones for growers across Northern California since 2007. It contains a big collection of premium clones from popular and emerging genetic lines that provides excelle..

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Victory Seeds is a cannabis breeder that uses only the most potent, famous and successful genetics. It selects the award winning strains and improves their THC and CBD levels, therapeutic properties, view and structure, smells, taste..

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Oni Seed co. is a many championship cups winner seedback originated in California, USA. It was founded by Harry Palms and Onidoodles. This seedbank produced many world-famous strains and is known for its..

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The CBD Crew is an international project by Howard Marks is a famous author and freedom fighter in the name of Cannabis. CBD Crew is the result of collaboration between Mr. Nice seeds and resin in 2009. During the past decade science..

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Sumo Seeds is an Europian cannabis seedbank that delivers to the market top quality marijuana seeds of rare genetics. It guarantees excellent quality of seeds and high germination rates. The breeder has a wide range of cannabis ..

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Homegrown Natural Wonders is a family farm based in the United States near the Pacific Northwest. Three generations are working together to design the best, most delicious and productive medical cannabis. Their seeds are not fem..

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TGA Genetics Subcool Seeds was founded by a small group of dedicated medical growers in 2001. These people didn't want to follow the industry standard so hey started to work with an open source breeding and to create new varieties th..

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710 Genetics are a boutique UK seedbank offering both rare and popular seeds from around the world. With genetics that are a combination of the UK’s finest crossed with strains from the US and Europe, 710 Genetics are..

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Massive Seeds is the mix of huge trichomes, massive terpenes, strong aromas, high potency and anomoous yields! The motto of the company is "keep the best and throw away the rest". The main goal is to maximize yield. The breeder produ..

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GeaSeeds is a breeder with 15 years of experience in selecting and breeding the stable genetics. The brand was officially established in 2015. The collection contains a wide range of strains based on the most famous cannabis genetics..

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Founded in 2009 in Spain, Dr. Underground is an exceptional feminized cannabis seed breeder. Dr. Underground allows to sell their products only to some sellers of cannabis seed. Dr. Underground offers hybrids created from their own ..

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The Cali Connection is seed growers and  highly experienced breeders from across North and South California who breed specialized cannabis strains and hybrids using their philosophy of 'True Genetics'. For the connoisseur of Americ..

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CannaBioGen gathered a collection traveling around the world more than twenty years, searching for the best of the best varieties of Jamaica and Colombia, Pakistan, India and Thailand. CannaBioGen carefully selected the best of the m..

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Dr. Krippling is a team of breeders and growers who keep techniques and knowledge of generations of farmers. It combines the latest technologies and the great experience to breed the potent cannabis strains. Dr. Krippling provid..

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Genehtik is founded on the of many years of hard cultivation and on the experiance of  many amateurs and professional cannabis growers, known and unknown farmers and breeders from all over the world. The company starts its history i..

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The Devil’s Harvest Seed is a company that produces  tasty, heavy-hitting, high-yielding cannabis varieties. Two committed breeders founded it after several years of individual success. The collection contains a wide range of dif..

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In 1995 Nirvana was officially founded by cannabis seed specialist Mau. Nirvana history started at the end of the 1980s, when Nirvana's founder Mau was working in Positronics, the legendary Amsterdam grow shop. Inspired by this delig..

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DJ Short is one of the best cannabis breeders. DJ Short started in the 1970’s and worked with a small range of seeds to produce high quality strains. During over 40 years, DJ Short has produced some of the most unique strains fou..