Black Jack

Hybrid variety from Sweet Seeds, flowering in 8 wks. Reference data for planning a grow, not a measurement of your plant.

HybridType
FeminizedSeed
8 wksFlowering
16-21%THC

2 breeders sell Black Jack

Sweet Seeds is one of them. Photoperiod versions finish anywhere from week 8 to week 12. Compare every version side by side.

Genetics

Where it came from

LineageAfghani x Mexican
CBD1%
Grow information

How it grows

Indoor yield628.0g/m²
Outdoor yield986.0g/plant
Indoor height80.0cm
Outdoor height171.0cm
ClimateContinental
GrownIndoor, Outdoor
Outdoor harvestBeginning of October
Reported

What growers describe

Reported by catalogs and growers, not measured from a plant.

Reported effects

  • Focused
  • Energetic
  • Creative

Flavors

  • Sweet
  • Earthy
  • Orange
  • Skunk

Aromas

  • Incense
Lab tested

Measured samples

Medians of public flower-lot lab results for samples sold under the name Black Jack, from the Cannlytics Hawaii dataset (CC BY 4.0). Market samples sharing the cultivar name, not a measurement of Sweet Seeds’s version and not a guarantee for any seed you buy.

Total THC18.69% median · 17 samples
THCA20.69% median · 17 samples
Δ9-THC0.65% median · 17 samples
Total CBD0.04% median · 17 samples
CBD0% median · 17 samples
Latest test2020-06-01
Planning

Schedule and VPD targets

Vapour pressure deficit targets by stage, measured from leaf temperature rather than air temperature. The same bands ChloroFile charts against.

StageWhenVPD target
SeedlingWeeks 1-20.4 - 0.8 kPa
VegetativeUntil you flip0.8 - 1.2 kPa
Early flowerFlower weeks 1-31.0 - 1.5 kPa
Late flowerFlower weeks 4-81.2 - 1.6 kPa

Counting from the flip, expect to harvest around week 8.

Related

Where to look next

Grouped by how each one is related to this variety rather than ranked into a single list, because those are different questions.

Crosses made from this

Varieties that name this one as a parent.

Shares a parent

Different crosses that draw on the same parent.

If you liked this

No shared parentage, but they line up on type, flowering time and reported character.

All Sweet Seeds varieties · All 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.

See what it does