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Old School Genetics
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Old School Genetics is a Barcelona collective led by the well-known breeder Oldman Green.
What makes them interesting isn’t just their Spanish base, it’s the library they’ve built: they have access to very rare cuts and lines from legends like Lucky Dog Seed Co, Karma Genetics and GG Strains.
Using those, they’ve put together a tight catalogue of about 25 strains that fuse 90s-era flavour with modern power.
Oldman Green’s work goes back decades — his Peach Slush was already winning trophies in the mid-90s and it’s still in circulation today.
A lot of the current line is collaboration work, especially with Karma and GG. One to check first is OS Glue (Gorilla Glue × Northern Lights #5 × Blueberry): it lands in the indica-leaning zone with sharp citrus/berry notes and classic old-world backbone.
Most drops come in regular (12) or feminised (6) packs, and the overall range is small on purpose — they only release what meets their old-school standards.
We’ve got everything that’s available here at Seed City, single seeds or full packs, at the lowest prices, with discreet worldwide delivery.
Website:
https://www.old-school-genetics.com/
Instagram:
https://www.instagram.com/oldschoolgenetics/