Compare Cannabis Seed Banks & Breeders

Spain (founded)

Short Stuff

Founded by a passionate collective of veteran growers active since the 1990s, Short Stuff Seedbank operates out of Spain with a singular, dedicated focus: mastering and elevating autoflowering cannabis genetics. Following Joint Doctor’s mid-2000s release of the original Lowryder, the team recognized the revolutionary potential of Cannabis ruderalis hybridizations that flower rapidly regardless of light cycles. Short Stuff began extensive selection and backcrossing programs using top-tier Lowryder specimens to overcome early autoflower limitations such as low yield and reduced potency. The breakthrough came with their flagship release, Short Stuff No. 1, which established a robust base for future breeding projects. Partnering with renown autoflower specialists like Breeder Stitch (pioneer of "Super Autos"), Short Stuff expanded its catalog beyond dwarf varieties into tall, heavy-yielding automatic giants. Their recognized catalog includes standout bestsellers and strain milestones such as Short Stuff No. 1, Snowryder, Dr. Feelgood, Mazar Automatic, Super Cali Haze, and Auto Assassin. Offering both regular and feminized automatic seeds engineered for fast harvest turnarounds, heavy resin output, and strong pest resistance, Short Stuff Seedbank remains a trusted global reference point for modern autoflower cultivation.

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Spain (founded)

Silent Seeds

Launched in 2021, Silent Seeds represents the official rebirth and continuation of Dinafem Seeds—one of the most influential seed banks in European history. Built by key members of the original Dinafem breeding team, the brand bridges classic European genetic stabilization with modern high-potency, resin-heavy global breeding. Silent Seeds is dual-focused: preserving irreplaceable heritage lines while pushing the boundaries of modern flavor profiles. Their catalogue brings back official, authentic versions of Dinafem’s most celebrated strains, produced using the exact same mother clones and rigorous stabilization standards. In parallel, Silent Seeds has forged major high-profile collaborations with premier international creators, including elite US breeders like Sherbinskis and cultural icons like French artist Booba and Julian Marley. Their world-class lineup features legendary classics and cutting-edge hybrids such as Moby Dick, Critical + 2.0, Original Amnesia, B-45, Polar Gelato, Z-Berry, and Acai Jelly. Offering ultra-stable photoperiod feminized seeds, fast-flowering varieties, and heavy-yielding autoflowers, Silent Seeds stands as a premier benchmark for high cannabinoid output, dense trichome coverage, and rich terpene complexity.

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Netherlands (founded)

Soma Seeds

Founded by veteran grower, author, and spiritual activist Soma, Soma Seeds (also operating as Soma's Sacred Seeds) is one of the most respected and foundational brands in international cannabis history. Starting his relationship with the plant in New York during the late 1960s, Soma relocated to Amsterdam in the 1990s, where he formalized his breeding projects around a central philosophy: treating cannabis as a sacred, holistic medicine that must be cultivated with 100% organic integrity. Soma Seeds revolutionized European breeding by combining rare landraces from Central Asia, Hawaii, and South America with elite Afghan and American parent stock. Famous for pioneering eco-friendly indoor cultivation techniques and writing extensively for industry publications, Soma's breeding methods prioritize complex terpene profiles, dense calyx-to-leaf ratios, high therapeutic cannabinoid levels, and exceptional resin output suitable for solventless extraction. Their globally celebrated catalog features multiple High Times Cannabis Cup winners and timeless hall-of-fame strains including NYC Diesel (a world-renowned red grapefruit-and-fuel hybrid), Somango (formerly Soma Sativa), Lavender (famous for its deep purple hue and spicy hash aroma), Buddha's Sister, Amnesia Haze, and SoGouda. Available in regular, photoperiod feminized, and selective autoflowering lines, Soma Seeds remains a definitive global benchmark for spiritual, organic craft breeding.

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Netherlands (founded)

Spliff Seeds

Established in 1995 in Amsterdam, Netherlands, Spliff Seeds was founded by a passionate team of Dutch growers and breeding veterans with a mission to stabilize premium cannabis genetics for growers worldwide. Operating out of the world’s most celebrated cannabis capital during the peak of the 1990s coffeshop boom, the brand focused heavily on rigorous mother-plant selection, genetic uniformity, and high germination viability. Spliff Seeds approaches plant breeding with classic Dutch precision. Every strain in their catalog undergoes extensive multi-generational testing to ensure strong mold resistance, structural vigor, and consistent growth traits across both indoor and outdoor setups. Their genetic archive blends heritage Afghan, South American, and Southeast Asian landraces with iconic European hybrids to deliver heavy-yielding plants rich in cannabinoids and distinct aromatic profiles. Their time-tested catalog features famous bestsellers and award-winning strains such as Spliff's Strawberry, Blue Berry, Dutch Chili, Gold Rush Outdoor, Super Skunk, Amnesia Flash, and Bubblegun. Available in photoperiod feminized, authentic regular, and rapid autoflowering lines ("Spliff Automatic"), Spliff Seeds remains a trusted global standard for reliable, high-yield Dutch genetics.

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Netherlands (founded)

Strain Hunters

Launched in 2008 in Amsterdam, Netherlands, Strain Hunters was created by Green House Seed Co. founder Arjan Roskam and his iconic breeding partner, the late Franco Loja. Born out of their internationally acclaimed documentary series documenting expeditions to remote corners of the world—from Africa and the West Indies to the Himalayas—the brand was established with a mission to identify, document, and preserve rare landrace cannabis genetics before habitat loss and industrial hybridizations wiped them out. Strain Hunters bridges ancient landrace botany with cutting-edge European breeding. By cross-pollinating pristine, site-specific landraces gathered during their global expeditions with stabilized European cup-winners, the breeding collective creates unique hybrids that feature extreme structural resilience, complex cannabinoid profiles, and exotic terpene profiles ranging from spicy landrace hash to sweet tropical fruit. Their globally recognized catalog features celebrated bestsellers and award-winning hybrids such as Money Maker, Afgooey, Damnesia, Flowerbomb Kush, Kaboam, and Skunk Auto. Offering feminized photoperiod strains, rapid autoflowers, and specialized medicinal profiles, Strain Hunters remains an iconic fixture in international cannabis preservation and high-potency breeding.

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UK (founded)

Super CBDx Seeds

Founded with a singular mission to revolutionize therapeutic cannabis, Super CBDx Seeds is a specialized seed bank dedicated entirely to high-cannabidiol (CBD) and low-tetrahydrocannabinol (THC) genetic research. Recognized for breaking away from high-potency recreational breeding trends, the brand set out to produce high-performing plants that deliver robust medicinal benefits without inducing strong psychoactive effects. Super CBDx achieved a major breeding breakthrough by stabilizing a foundation mother plant (Super CBDx) that consistently yields extremely high CBD percentages alongside negligible THC levels (frequently reaching CBD-to-THC ratios of 24:1 or higher). By crossing this proprietary high-CBD foundation with iconic global cultivars, Super CBDx created a catalog of high-CBD varieties that retain the specific terpene profiles, resin production, and growth vigor of famous classic strains. Their recognized catalog includes therapeutic high-CBD adaptations of world-famous genetics such as Super CBDx, Super CBDx x Jack Herer, Super CBDx x Black Widow, Super CBDx x Chronic, and Super CBDx x Critical Mass. Offering stable photoperiod feminized seeds designed for consistent cannabinoid ratios, Super CBDx Seeds remains a trusted benchmark for medical patients, wellness cultivators, and holistic extractors globally.

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