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Introducing the world of Greenhouse Seeds, one of the most respected and renowned cannabis seed producers! Founded by none other than Arjan Roskam in 1995 in Amsterdam. Thanks to the dedication and commitment of Greenhouse Seeds and their Strain Hunters, we now have the privilege to enjoy a wide range of cannabis varieties. Each seed that comes from their hands is infused with passion, meticulousness, and years of expertise.


Greenhouse Seeds is a well-known and reputable seed bank specializing in producing high-quality cannabis seeds. The company was founded in 1985 in Amsterdam, Netherlands, by Dutch breeder Arjan Roskam, also known as “The King of Cannabis.”

Greenhouse Seeds has played a pioneering role in the development of the cannabis industry and has built a strong reputation as one of the most respected seed banks in the world. They are involved in selecting, breeding, and crossing various cannabis varieties, and have numerous award-winning strains to their name.

The range of Greenhouse Seeds includes a wide variety of feminized, autoflowering, and CBD-rich cannabis seeds. They are known for their attention to detail and strict quality controls, delivering consistent and reliable seeds to both recreational and medicinal growers worldwide.

In addition, Greenhouse Seeds is also active in promoting research and education related to cannabis, and has contributed to various humanitarian projects and initiatives for medicinal cannabis use.


The history of Greenhouse Seeds begins in 1985 in Amsterdam, Netherlands, when Arjan Roskam, also known as “The King of Cannabis,” founded the seed bank. He was a passionate grower and a visionary in the cannabis industry. With his deep knowledge of cannabis genetics, he began experimenting with breeding and crossing different cannabis varieties to create new, unique, and high-quality strains.

Soon, Greenhouse Seeds gained recognition for the quality of their seeds and the extraordinary genetics of the produced plants. They won numerous awards at various international cannabis competitions and events, further solidifying their reputation as a leading seed bank.

In the 1990s, Greenhouse Seeds expanded its operations to different parts of the world. They started opening coffee shops in Amsterdam, where customers could experience their different strains and enjoy high-quality cannabis products.

As the years went by, Greenhouse Seeds continued to innovate and develop new varieties. They were among the first to introduce autoflowering seeds, making cannabis cultivation more accessible and easier for both novice and experienced growers.

Greenhouse Seeds has not only expanded in the cannabis industry but has also contributed to various humanitarian and educational projects, particularly in the field of medicinal cannabis use and research. They have always been committed to promoting knowledge and understanding of cannabis and raising awareness of the benefits of medicinal use.

Over the years, Greenhouse Seeds has maintained its position as one of the most respected and influential seed banks in the cannabis community. Their ongoing commitment to quality, innovation, and promoting cannabis has helped them achieve an iconic status in the cannabis industry.


Greenhouse Seeds boasts an impressive trophy cabinet that reflects their dedication to quality and excellence in cannabis breeding. Since their founding in 1985, they have won numerous awards and recognitions at prestigious cannabis competitions and events around the world.

Some of Greenhouse Seeds’ awards include:

  • High Times Cannabis Cup: Greenhouse Seeds has won the coveted High Times Cannabis Cup multiple times, one of the most prestigious cannabis competitions in the world. These awards include victories in various categories such as best indica, best sativa, and best hybrid.
  • Spannabis Champions Cup: Greenhouse Seeds is also frequently awarded at the Spannabis Champions Cup, a leading cannabis fair and competition in Barcelona, Spain.
  • Highlife Cup: This event in the Netherlands rewards the best cannabis strains and products of the year, and Greenhouse Seeds has also won numerous awards here.
  • Expogrow Cup: Greenhouse Seeds has won several awards at the Expogrow Cup, a renowned cannabis festival in Spain.
  • IC 420 Growers Cup: Greenhouse Seeds has received recognition at this annual cannabis competition in Amsterdam.

These are just a few examples of the many awards Greenhouse Seeds has received over the years. Their ongoing commitment to developing high-quality cannabis genetics has earned them a solid reputation as one of the most successful and respected seed banks in the global cannabis community. Their impressive trophy cabinet is evidence of their continuous pursuit of excellence and innovation in cannabis breeding.