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Super Jack

Feminised

Super Jack is a sativa-leaning hybrid prized for citrus-driven, uplifting highs and reliable flowering.

Why choose Super Jack?
  • Citrus lift with Jack-style spice.
  • Sativa energy without heavy sedation.
  • Performs well in sheltered UK gardens and greenhouses.
THC 18-22%
CBD 0.5-1.5%
Lineage Super Silver Haze x Jack Herer
Genotype Sativa-dominant hybrid
Difficulty Intermediate
Flowering 9-11 weeks
Height Medium-tall (approx. 1.5–2.5 m outdoors)
Yield Medium to high (varies by environment)
Taste citrus, pine, earthy
Seed Type Feminised
Climate humid greenhouse conditions
Effects energetic, uplifting, focused
Environment Both

About Super Jack

Super Jack is a sativa-leaning hybrid that blends Super Silver Haze and Jack Herer characteristics to produce an energetic, terpene-forward profile. The cultivar favours growers who can manage humidity and light cycles and is valued for daytime effects, clear focus and a citrus-pine flavour.

Grow Difficulty:

Growing Super Jack in humid greenhouse conditions requires attention to humidity and airflow to keep plants healthy. The strain suits intermediate growers who monitor environmental factors without needing specialist skills.

Flowering Time:

Indoor flowering usually completes within nine to eleven weeks under standard photoperiods. Outdoors, plants in Leicester tend to finish in late September to early October in a typical season.

Yield:

Under attentive care the yield is medium to high, with dense tops possible in the right environment. Results vary significantly with canopy management and local climate.

Height:

Plants develop a vertical, open structure with long internodes and a prominent central cola. Outdoors they commonly reach around 1.5 to 2.5 metres if left to stretch.

Environment:

Super Jack performs well both indoors and outdoors with straightforward light and pruning choices. In Leicester outdoor grows can do well in a sheltered spot and in Leicester greenhouse setups it responds to active environment management.

Climate:

Growing Super Jack in Leicester requires careful management because the city often experiences damp weather that affects plants. Humid greenhouse conditions in Leicester demand good ventilation and attention to airflow to reduce mould risk.

Frequently Asked Questions

Common questions about this strain, covering growth, effects, and suitability for UK conditions.

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Choose seed quantity
Selected: 5 Seeds
£53.33 £40.00
£8.00 / seed • You save £13.33
Accepted payment methods
100% Satisfaction Guarantee • Secured Payments
Urbanseedbank Support

Questions & Answers

Customer questions and answers from the Urbanseedbank team. Submit your own question and we’ll respond after review.

5 questions Answered posts are shown first.
Common question Posted by Urbanseedbank Answered
Q
How did your last Super Jack run go in Leicester?
A
Verified answer
The last run responded well to open canopy spacing and careful monitoring; damp weeks in Leicester required extra vigilance.
Common question Posted by Urbanseedbank Answered
Q
Did you notice any pest pressure?
A
Verified answer
Minor sap-sucking insects appeared but were manageable with routine inspection and non-invasive control measures.
Common question Posted by Urbanseedbank Answered
Q
What training suited Super Jack?
A
Verified answer
Light topping and simple low-stress canopy work helped focus energy on main colas without heavy pruning.
Common question Posted by Urbanseedbank Answered
Q
Any tips for curing?
A
Verified answer
Cure slowly in a stable, cool environment and avoid rapid drying to retain terpenes and smooth the smoke.
Common question Posted by Urbanseedbank Answered
Q
Would you grow it outdoors again in Leicester?
A
Verified answer
Yes, with a sheltered site and proactive attention to wet spells it performs well outdoors around Leicester.

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