Cannabis breeders
1527 breeders indexed — each page lists that breeder's strains with flowering times and lineage, linked to real grow journals on Cultivar. These are the genetics you'll find behind the seeds at the major seed banks.
Legendary Strains
- UFO Genetics 6 strains
- UKSeedCo 7 strains
- Ultra Fire Genetics 1 strain
- Ultra Genetics 8 strains
- Umami 26 strains
- Umami Seed Co 2 strains
- Underground Orig. 11 strains
- Underground Originals 1 strain
- Underground Seeds 14 strains
- Underground Seeds Collective 4 strains
- Unicorn Boys 12 strains
- United Cannabis Seeds 16 strains
- United Seedbanks 11 strains
- Universally Seeded 22 strains
- Unknown or Legendary 796 strains
- Unleashed Genetics 9 strains
- Unnamed Gen 2 strains
- Up The Hill 5 strains
- Up The Hill Creations 3 strains
- Uprising Seed Co 17 strains
- Urban Legends 3 strains
- US SkunkX 4 strains
- Ustad Seeds 4 strains
- Utopia Farms 2 strains
Track your own grow free — the journal grades your environment against these bands →
Get the one-page grow reference card
VPD, pH by medium, deficiency symptoms and dry/cure targets on a single printable page. Free — plus the occasional grow-data breakdown. No spam, unsubscribe in one click.