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Super Jack Auto
High-potency hybrid autoflower with creative and focused effects and balanced hybrid structure. Ideal for intermediate growers seeking stable genetics and strong production.
◉Flavor:Pine, sweet citrus, earthy musk
Grower tip: Stick to low-stress training, autos recover slowly
Premium stabilized genetics · germination guaranteed
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About Super Jack Auto
Super Jack is a 60/40 hybrid testing at 26% THC with a limonene-dominant terpene profile. At a practical level, this means a plant that offers moderate stretch with balanced branching that responds well to training, finishing in 8-10 weeks. The Limonene/Caryophyllene combination shapes both the aromatic profile and the effect character, this is not a one-dimensional strain.
Growing Parameters
Flowering time: 8-10 weeks from flip. Indoor yield at 600+ PPFD: 450-550g/m². Outdoor in full sun with 5+ gallon containers: 400-600g/plant. Plant height indoors after training: Short-Medium (2-3.5 ft). Feed EC targets: 1.0-1.4 in veg, 1.4-1.8 in peak flower. pH range: 6.0-6.5 in soil, 5.8-6.2 in coco. Limonene production peaks when day/night temperature differential exceeds 10°F in the final two weeks, growers who drop nighttime temps to 62-65°F during this window report stronger aromatic development.
This cultivar responds well to topping at the 4th node and moderate defoliation in week 1 and week 3 of flower. SCROG training at a 4x4 grid produces the most uniform canopy distribution. Rated intermediate difficulty.
Effects and Use
At 26% THC, Super Jack delivers creative, focused, energetic effects with a limonene-influenced character. The onset is balanced, head and body arrive together and remain proportional throughout a 2-3 hour duration. This makes the strain adaptable to different situations depending on dose. The limonene dominance keeps the mental space bright and slightly elevated even when the body relaxes.
Terpene Profile
Dominant terpenes: Limonene (primary), Caryophyllene (secondary), Linalool (tertiary). This combination produces an aroma profile that is immediately identifiable when the jar opens and translates well to both vaporization (best at 360-385°F) and combustion, though lower temperatures preserve the caryophyllene top notes that combustion destroys.
Who Should Grow Super Jack
Best suited for growers who value speed and simplicity, autoflowering genetics mean no light schedule changes, compact plants, and harvest in 10-12 weeks from seed. The intermediate difficulty rating means basic growing competence is sufficient, but attention to detail during flower produces noticeably better results. Ships discreetly to all 50 US states with our germination guarantee.
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Super Jack Strain Review
Want the full breakdown of effects, lineage, terpene profile, and a complete grow guide? Read our in-depth Super Jack strain review.
Super Jack Auto, Cannabinoid & Terpene Reference
Reference ranges aggregated from publicly-reported third-party lab data and breeder documentation. Total THC reported as max-potential (THC + 0.877 × THCA). Individual seed-lot expression may vary by 1-3 percent.
Super Jack Auto, Aggregated Grower Yield Reports
Yield ranges aggregated from public grower journals, breeder-documented spec sheets, and cultivation community reports on Super Jack Auto autoflower seeds. First-time growers should expect 70-85 percent of these numbers.
| Setup | Yield |
|---|---|
| 5×5 tent, 1000W HPS, ScrOG + topping | 112g |
| 3×3 tent, 400W LED, LST | 112g |
Super Jack Auto, Sourcing & Genetics
Leafly's Super Jack page lists Jack Herer and Super Silver Haze as the strain's two parents: "Super Jack mixes Super Silver Haze with the illustrious Jack Herer." Weedmaps documents the same cross, though some accounts attribute an alternate Silver Skunk x Jack Herer origin to Amsterdam breeder Southseeds.
Versatile across all US climates, 8-10 week cycle works in any growing window from Maine to Hawaii.
Super Jack Auto, Breeder Information
Royal King GeneticsBred and stabilized in-house by Royal King Genetics , our internal breeding team. Every order is backed by our 95% germination guarantee. Read our full breeding process and about page.
Super Jack is an autoflowering line that has been worked through five generations of Royal King Genetics autoflower stabilization. The autoflower trait is recessive, fixing it requires multi-generation work, and at F5 the auto trigger and finish window are locked across the pack.
Lock the autoflower trait in Super Jack through five generations of selection.
Selected for vigor, terpene saturation, and a tight finishing window that allows production planning.
Royal King Genetics elite-cut archive, pollen from a maintained S1 line of the original elite mother.