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Captain Jack

Feminised
Photoperiod

Captain Jack is a compact hybrid with clear uplift and steady relaxation, suited to controlled indoor and protected outdoor grows.

Why choose Captain Jack?
  • Compact plants with dense buds suited to small spaces.
  • Balanced mind-body high ideal for daytime use.
  • Resilient resin production with clear aromatic notes.
THC 18-22%
CBD <1%
Lineage Jack Herer x Afghani
Genotype Hybrid
Difficulty Intermediate
Flowering 8-9 weeks
Height Short to medium (80-140 cm)
Yield Moderate (400 g/m² indoors; variable outdoors)
Taste pine, citrus, warm spice
Seed Type Feminised, Photoperiod
Climate Temperate, Short Outdoor Growing Season
Effects uplifting, focused, relaxed
Environment Suitable for indoor, greenhouse and sheltered outdoor sites

About Captain Jack

Captain Jack blends Jack Herer x Afghani genetics into a compact hybrid that delivers a bright, focused high with rounded body ease. It thrives indoors, in greenhouses or in sheltered outdoor sites and is a practical choice for growers managing limited seasons and variable humidity.

Grow Difficulty:

Growing Captain Jack is intermediate and benefits from careful timing in a short outdoor growing season. It needs vigilant moisture control and timely pruning to reduce mould risk.

Flowering Time:

Indoor flowering finishes in around eight to nine weeks. Outdoors it can ripen by late September in favourable microclimates.

Yield:

Indoor yields are moderate to good with proper training and lighting. Outdoor yields vary widely and depend on phenotype choice and season extension.

Height:

Plants remain compact to medium height, typically between 80 and 140 centimetres. The bushy structure suits screen of green and selective defoliation.

Environment:

Captain Jack performs well indoors and suits controlled tents or greenhouses in Dundee. Outdoors it prefers sheltered spots and benefits from heat retention near walls or under cover in Dundee.

Climate:

In Dundee the short outdoor growing season forces careful phenotype selection and early planting. Protected sites or greenhouse cultivation help secure full ripening in a temperate, short outdoor growing season.

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
My buds are showing early signs of mould, what now?
A
Verified answer
Isolate affected plants, remove rotten material, improve airflow and lower humidity immediately to halt spread; discard heavily infected buds.
Common question Posted by Urbanseedbank Answered
Q
When should I start flushing before harvest?
A
Verified answer
Flush with plain water for one to two weeks before harvest to help clear excess salts and improve smoke quality.
Common question Posted by Urbanseedbank Answered
Q
How often should I defoliate?
A
Verified answer
Light defoliation during early flowering clears lower growth and improves airflow, but avoid heavy leaf removal late in bloom.
Common question Posted by Urbanseedbank Answered
Q
Best way to avoid stretch outdoors in Dundee?
A
Verified answer
Finish veg with strong light and start flowering slightly earlier, plus use topping and LST to control vertical growth.
Common question Posted by Urbanseedbank Answered
Q
My plants look underfed despite regular feeding, any tips?
A
Verified answer
Check pH first and ensure root health; nutrient lockout from wrong pH is often the cause rather than feed volume.

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