Super Jack
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Super Jack

also known as Super Jack Herer, Super Silver Jack

SativaTHC-dominant

Super Jack combines Jack Herer with Super Silver Haze, or with Silver Skunk at Southseeds; users report a stimulating effect with a clear head.

Research as of 11/01/2026

Jack Herer appears in every pedigree given for Super Jack, but sources disagree on the second parent. Strain descriptions and several breeders name Super Silver Haze, and the strain accordingly also circulates under the names Super Jack Herer and Super Silver Jack. Southseeds, by contrast, crosses Jack Herer with Silver Skunk from its own range for its version. Who first made the cross is not documented.

Genetics and Origin:

Super Jack is classed as a sativa, in one description as a pure sativa; another places its origin in the USA. The product description of the Southseeds version contradicts itself, calling the plant mostly sativa in one place and an indica-dominant hybrid in another.

The Vault Seed Bank lists Super Jack with the suffix J1 and crossed it with a male of Hell Face on Fire to make Jacks Bells. Super Jack 047 from Élite Seeds shares only the name: there the breeder combines Jack Elite with AK47 and traces the Jack line back to a Jack Herer from 1999.

Aroma and Flavor:

Sweet and spicy with a buttery note, plus earth, herbs and skunk: this is how strain descriptions summarize the aroma, and the flavor is said to turn sweeter on the exhale. User reports add fruit with a chemical undertone, citrus, pine and pepper, and in isolated cases an ammonia note. Southseeds describes its version as lightly peppery lemon, skunk and a hint of Haze.

Compilations of lab analyses of commercially traded products list terpinolene as the dominant terpene. One then names caryophyllene and pinene, another phellandrene, caryophyllene and ocimene; it gives a mean of 0.69 % for terpinolene.

THC and CBD Content:

Strain descriptions give 18 to 24 % THC, and one also lists 1 % CBG. Crop King Seeds states 12 to 24 % THC for its version, while 20 % THC and 2 % CBD are given for the Dutchman Seeds version.

Effects:

Reports describe a fast-onset, stimulating effect with a clear head. Concentration, drive, talkativeness, creativity and elevated mood are mentioned repeatedly, and some users also describe tingling or food cravings. As side effects, the reports mention dry mouth and dry eyes, and restlessness at higher doses; some felt tired as the effect wore off. One strain description additionally lists dizziness.

Cultivation:

Without reference to a particular breeder, strain descriptions give a flowering time of 9 to 10 and 9 to 11 weeks respectively. One of them rates the strain as moderately difficult, calls it sensitive to changing environmental conditions and considers a warm, Mediterranean climate suitable; Crop King Seeds, by contrast, considers its version relatively easy to grow. Southseeds describes vigorous growth, good performance in all substrates and large flowers of medium density. Rocket Seeds names large, dense buds in light green with orange hairs and a thick trichome layer.

Versions from Different Breeders:

  • Southseeds: Silver Skunk × Jack Herer, feminized, 60 to 75 days of flowering, 400 to 500 g/m², 60 to 110 cm tall.
  • Virgin Seeds: Super Silver Haze × Jack Herer, regular seeds only, listed for indoor and outdoor cultivation.
  • Crop King Seeds: Super Silver Haze × Jack Herer, feminized, 8 to 10 weeks of flowering, 300 g/m² indoor and 200 g per plant outdoor, harvest in mid-October. Rocket Seeds gives the same figures for its feminized version.
  • Dutchman Seeds: Super Silver Haze × Jack Herer, feminized, 55 to 65 days of flowering, up to 450 g/m² indoor and up to 550 g per plant outdoor.
  • Growers Lab: autoflowering, feminized version.
  • Élite Seeds: Super Jack 047 from Jack Elite × AK47, feminized, 8 to 9 weeks of flowering.

Community Experiences:

The reports largely agree on the stimulating basic direction. A few users, however, found the strain relaxing to sleepy or heavy and clouding, and one missed the expected energy boost entirely. Duration figures range from 35 to 45 minutes of distinct effect to around 7 hours. One report stresses that cultivation and curing help determine quality.

A documented indoor soil grow from seeds of no known breeder used topping, LST and repeated defoliation. The grower recorded fluctuating pH, slow flower formation and burnt pistils toward the end.

This article is for informational purposes only and is not a substitute for medical or therapeutic advice. If you have any health-related questions, please consult a doctor or another qualified professional.

Effects & aroma

From reviews and experience reports — subjective, not a medical statement

Reported as positive
hungry
sleepy
focused
Reported side effects
dizzy
anxious
dry eyes
Aroma & flavor
Herbs Chemicals Pine

No reviews yet — information from the strain description. Rate the strain to see shares.

Cannabinoids & terpenes

Levels vary by batch, phenotype and cultivation — values are indicative

THC
23.1 % Lab value (1 sample)
18–24 %additional figure
0 %35 %
Laborwert als Gesamt-THC: THC + 0,877 × THCA (THCA wird beim Erhitzen zu THC)
THCA
24.7 % Lab value (1 sample)
0 %35 %
CBD
0.28 % Lab value (1 sample)
0 %20 %
CBG
0.12 % Lab value (1 sample)
1 %additional figure
0 %10 %
THCV
0.2 % Lab value (1 sample)
0 %10 %
Terpene profile
  • #1
    TerpinoleneFruity
  • #2
    CaryophyllenePepper
  • #2
    PhellandreneMinty, citrusy
    0.35 %
  • #3
    PinenePine
  • #4
    OcimenMint
    0.3 %

Cultivation

Indicative values from breeder data and grow reports — varies by phenotype and setup

Flowering & harvest
Flowering time
9–11 weeks
Difficulty, environment & climate
Difficulty
Medium
Climate
Warm, Mediterranean

According to one strain description, sensitive to changing environmental conditions.

Morphology

Southseeds version: vigorous growth, thrives in all substrates, large flowers of medium density. Rocket Seeds: large, dense buds in light green with orange hairs and a thick trichome layer. No classification of bud structure because of differing information between versions.

Training

One grow report documents topping, LST and repeated defoliation without assessing the response.

Genetics & origin

Origin
Cross
Jack Herer × Super Silver Haze
Origin
United States
Type
Sativa
Available as seeds
Regular, Feminized, Autoflowering
Flowering types (all versions)
Photoperiod, Autoflowering
Original breeder
Unknown or Legendary

Versions by different breeders

Several breeders sell their own versions under this name. Each figure comes from the respective breeder.

Unknown or LegendarySuper Jack
Original

Placeholder for the undocumented original breeder; pedigree Super Silver Haze × Jack Herer. No cultivation or content data.

SouthseedsSuper Jack
Different genetics
PhotoperiodFeminized
Flowering
60–75 days
Yield indoor
400–500 g/m²
Height indoor
60–110 cm

Silver Skunk (Southseeds) × Jack Herer. The product page calls the strain mostly sativa and at the same time an indica-dominant hybrid. Height of 60–110 cm without distinction between indoor/outdoor, entered here under indoor. Data from a retailer page that reproduces the breeder's description.

èLite SeedsSuper Jack 047
Different genetics
PhotoperiodFeminized
Flowering
8–9 weeks

Jack Elite × AK47; according to the breeder, the Jack line goes back to a Jack Herer from 1999. Flowering time according to the breeder 8–9 weeks, the strain page additionally “±60 days”. THC stated as “very high” without a figure.

More breeders (5): Crop King Seeds, Dutchman Seeds, Growers Lab, Rocket Seeds, Virgin Seeds

Lab results

Measurements of individual samples. Values vary by batch, cultivation and phenotype.

Flowernicht angegeben (Herstellerangabe)
THC23.1 %
THCA24.7 %
CBD0.28 %
CBG0.12 %
THCV0.2 %

Community

48 grow and experience reports reviewed Community reports
Consensus

Stimulating, fast-onset effect with a clear head; concentration, drive, talkativeness, creativity and elevated mood are mentioned. Dry mouth and dry eyes are reported as side effects, restlessness at higher doses.

Divergent reports

Individual users found the strain relaxing to sleepy or heavy and clouding; one missed the energy boost. The duration of effect ranges from 35 to 45 minutes of distinct effect to around 7 hours. Tiredness as the effect wears off is reported occasionally.

Reported values from individual grows
Duration of distinct effect in a user report
45 minutes
Duration of the peak effect in a user report
35 minutes
Duration of effect in a user report
7 hours

Grow diaries with this strain

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Similar strains

Related genetics, same dominant terpene, similar effects and aroma — excluding direct parents and descendants

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