ChloroFileBlack Jack
2 breeders sell a variety under this name. Their flowering windows, seed types and claimed potency in one table, so you can see where they agree and where they do not. Reference data for planning a grow, not a measurement of your plant.
Catalogue data last updated 17 October 2026.
| Breeder | Their version | Type | Seed | Flowering | THC |
|---|---|---|---|---|---|
| Nirvana | Black Jack | sativa | Feminized | 8-12 wks | 16-20% |
| Nirvana | Black Jack Auto | sativa | Feminized | 8-12 wks auto | |
| Sweet Seeds | Black Jack | hybrid | Feminized | 9 wks | 16-21% |
| Sweet Seeds | Black Jack Auto | sativa | Feminized | 9 wks auto | 19% |
Potency figures are each breeder’s own claim for their own seed. Nothing on this page is a lab result, and two breeders quoting the same number did not test the same plant.
Reading the table
Photoperiod versions finish anywhere from week 8 (Nirvana) to week 12 (Nirvana), from the flip.
Autoflowering versions finish anywhere from week 8 (Nirvana) to week 12 (Nirvana), from seed.
Claimed THC runs from 16% (Nirvana) to 19% (Sweet Seeds). Those are the breeders’ own figures for their own seed, not lab results on a shared sample.
Both light cycles are sold under this name: 2 photoperiod and 2 autoflowering. They are not interchangeable, and their flowering figures are not measured from the same day.
Recorded parentage
More than one parentage is recorded under this name.
| Recorded lineage | Given by |
|---|---|
| Black Domina x Jock Horror | Nirvana |
| Afghani x Mexican | Sweet Seeds |
| S.A.D. Sweet Afgani Delicious Auto x Jack Herer elite clone | Sweet Seeds |
Other cultivars worth comparing
Reached through the varieties this one is most often filed beside.
- Blue Dream21 breeders
- Super Skunk18 breeders
- Ice3 breeders
- Northern Light15 breeders
- Durban Poison12 breeders
- Amnesia Haze21 breeders
Track one of these
ChloroFile carries this whole reference offline. Pick a variety when you add a plant and it fills in the type, seed type, and flowering window, then logs what actually happened against it.