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Authentic origin
Clear parentage, traceable material and respect for the breeders, selections and clone sources behind each project.
About us
Original breedingMore than 25 yearsGenetic preservationOldman GreenLimited releases
Breeding · preservation · provenance
About Old School Genetics
Old School Genetics is the independent breeding project led by Oldman Green, rooted in Barcelona and shaped by more than 25 years of selection, preservation and original breeding. OSG connects classic cannabis genetics with carefully documented releases, long-term breeding work and limited drops.
Genetic and historical context reviewed by Oldman Green
25+Years of breeding, selection and preservation.
BarcelonaThe home of Old School Genetics and Oldman Green.
OriginalOSG breeding separated clearly from distributed seed banks.
LimitedFocused releases with lineage and context preserved.
The OSG story
Old genetics. Living breeding work.
Old School Genetics was built around a simple principle: important genetic material should be preserved, understood and worked with—not reduced to a name or a marketing story. The project grew from hands-on selection, clone-based work and a long commitment to genetics whose identity existed before the latest trend cycle.
For OSG, “old school” does not mean standing still. It means keeping the origin visible while breeding forward: recording parentage, respecting the people and lines behind the work, and releasing seeds only when the project has a clear purpose.
“Oldies Never Die” is not nostalgia. It is a commitment to keeping valuable genetics alive through selection, preservation and new breeding work.
Breeding philosophy
01 · PROVENANCE
02 · SELECTION
03 · PRESERVATION
04 · HONESTY
What Old School Genetics stands for
OSG evaluates genetics through provenance, breeding logic and practical value. The name on a pack matters less than the quality and purpose of the work behind it.
Work with intent
Releases are chosen for a defined breeding or preservation purpose—not to fill a catalogue or follow a temporary fashion.
Classics kept relevant
Historical references remain useful when their genetic identity is maintained and carried into carefully planned new work.
No invented narratives
OSG communicates genetic context and expected variation without fantasy guarantees, exaggerated claims or anonymous hype.
Heritage genetics
Classic families at the heart of OSG
Skunk, Widow, Haze and Blueberry families form important reference points within the Old School Genetics catalogue. They are presented as living breeding material, supported by current products, archive releases and ongoing selection work.
Breeder · Oldman Green
The breeder behind OSG
Oldman Green
Oldman Green leads the breeding direction of Old School Genetics. His work is grounded in long-term observation, selection and first-hand knowledge of the genetic material—not in catalogue descriptions written at a distance from the plants.
That experience shapes how OSG evaluates parent plants, preserves useful traits, approaches collaborations and explains each release. The objective is not to make every seed sound identical; it is to give collectors the context needed to understand where a line comes from and why it exists.
OSG’s long relationship with specialist communities and breeders has also created a documented network of knowledge around classic cuts, modern selections and breeding collaborations.
Clear brand architecture
Original breeder
Authorized distribution
Authorized distribution
Selected breeder
Current relationship
Selected project
Selected breeder
Selected breeder
Original OSG breeding and trusted seed banks
Old School Genetics has two distinct roles. The first is its own breeding and preservation work. The second is presenting selected releases from independent breeders with whom OSG has genuine relationships. The two are never treated as the same thing.
Old School Genetics breeding
Original lines, preserved classics and collaborations
OSG releases are presented with their own genetic context, Oldman Green’s breeding direction and a clear distinction between original projects and named collaborations.
Selected independent breeders
Authentic packs and informed distribution
The wider Seed Shop gives collectors access to independent seed banks while preserving each breeder’s identity, catalogue structure and authorship.
Old School Genetics
Original breeding, genetic preservation, classic lines and limited releases selected by Oldman Green.
Karma Genetics
Authentic breeder packs, current drops and documented archive lines from a long-standing relationship with OSG.
Lucky Dog Seed Co
Authentic packs from Skunk VA’s Chemdog-focused catalogue, including releases connected to the Chem 91 family.
Top Dawg Seeds
A strategic European catalogue reference for JJ-NYC’s Chem, Sour and Haze work, including Stardawg and Black Haze.
Grounded Genetics
Current limited releases and documented drops presented through the focused OSG breeder network.
Candies Seed Co
A current project within the premium OSG selection, with active collections and available breeder packs.
Inspiration Seed Co
A focused selection of Inspiration Seed Co breeder packs, with current stock and pack information.
Piff Coast Farms
A selected catalogue centred on Piff and East Coast Haze references, grouped in one focused collection.
Community and documentation
Breeding history should be traceable
Years of forum discussions, breeder exchanges, interviews, product archives and first-hand selection work provide the context behind OSG. These sources will continue to support dedicated strain pages and editorial articles, allowing important genetic history to remain accessible instead of disappearing with each release cycle.
Old School Genetics FAQ
About OSG
What is Old School Genetics?
Old School Genetics is an independent breeding and genetic preservation project led by Oldman Green in Barcelona. Its work includes original releases, preserved classic references, documented collaborations and limited drops.
Who is Oldman Green?
Oldman Green is the breeder and creative direction behind Old School Genetics. He brings more than 25 years of experience in selection, preservation and breeding to the OSG catalogue.
What does “Oldies Never Die” mean?
It expresses OSG’s commitment to keeping valuable genetics relevant through preservation, selection and new breeding work rather than treating classic names as nostalgia alone.
Which genetic families are important to OSG?
Skunk, Widow, Haze and Blueberry families are central reference points, alongside original OSG projects and documented collaborations with trusted breeders.
Are all seeds in the OSG Seed Shop bred by Old School Genetics?
No. The Seed Shop includes both original Old School Genetics work and releases from independent seed banks. Every section identifies the breeder so authorship and provenance remain clear.
Is Old School Genetics an authorized Karma Genetics distributor?
Yes. Old School Genetics is an authorized source for Karma Genetics and maintains a direct, long-term relationship with the breeder.
Does OSG ship internationally?
OSG serves collectors in multiple international markets. Available destinations, current conditions and pack information should always be checked during checkout and on the relevant product page.
Where can I explore original Old School Genetics releases?
The dedicated Old School Genetics catalogue separates current releases, classic references, collaborations and sold-out archive products.
Continue exploring
Authentic genetics begin with clear origins.
Explore original Old School Genetics breeding, preserved classics and the wider selection of independent seed banks presented by OSG.