
- A compact hybrid built for clarity and reliable outdoor finishes.
Captain Jack
Captain Jack is a compact hybrid with clear uplift and steady relaxation, suited to controlled indoor and protected outdoor grows.
- Compact plants with dense buds suited to small spaces.
- Balanced mind-body high ideal for daytime use.
- Resilient resin production with clear aromatic notes.
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18-22% |
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<1% |
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Jack Herer x Afghani |
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Hybrid |
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Intermediate |
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8-9 weeks |
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Short to medium (80-140 cm) |
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Moderate (400 g/m² indoors; variable outdoors) |
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pine, citrus, warm spice |
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Feminised, Photoperiod |
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Temperate, Short Outdoor Growing Season |
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uplifting, focused, relaxed |
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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.
Captain Jack is a balanced hybrid that leans slightly sativa. It offers both cerebral clarity and steady physical ease.
THC typically sits between 18% and 22% in well-cultivated plants. This level gives a noticeable effect while remaining manageable for regular users.
CBD content is low and usually under one percent. The strain is therefore more suited to psychoactive relief than CBD-specific therapy.
Captain Jack descends from Jack Herer x Afghani. That lineage provides clear-headed effects and reliable resin production.
Seeds are commonly sold as feminised for predictable flowering. Auto-flowering versions exist for growers needing very quick finishes.
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.
Indoor flowering finishes in around eight to nine weeks. Outdoors it can ripen by late September in favourable microclimates.
Indoor yields are moderate to good with proper training and lighting. Outdoor yields vary widely and depend on phenotype choice and season extension.
Plants remain compact to medium height, typically between 80 and 140 centimetres. The bushy structure suits screen of green and selective defoliation.
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.
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.
The high brings a clear, bright uplift that sharpens focus. After a short period a gentle physical relaxation settles in without heavy sedation.
The flavour profile mixes pine and citrus with a warm herbal spice. Smoke is clean with a faint sweet finish on the exhale.
Frequently Asked Questions
Common questions about this strain, covering growth, effects, and suitability for UK conditions.
Switch after three to six weeks of veg depending on plant size and desired training; smaller plants can flower earlier to finish before autumn.
Follow high humidity cannabis cultivation best practices: keep 50–70% RH during veg and drop to 40–50% during flowering, use ventilation and dehumidifiers where needed.
Use a balanced NPK feed in veg, reduce nitrogen and raise phosphorus and potassium during flowering for bud development.
Harvest when most trichomes are cloudy with some amber for a balanced effect; check pistils and trichome heads rather than calendar dates.
Watch for mould and bud rot in damp conditions, and monitor for aphids and spider mites, especially under stress or poor airflow.
Low-stress training, topping and SCROG cages produce even canopies and better light distribution for denser yields.
Yes, with a greenhouse or sheltered spot and early planting; choose fast-finishing phenotypes to cope with the short season.
No, CO2 enrichment is unnecessary for small grows and beginners; focus on light, nutrients and ventilation first.
Dry slowly to around 55–65% relative humidity then jar with daily burping for the first two weeks to develop flavour and smoothness.
Captain Jack seeds are generally stable but expect some phenotype variation in smell and stretch; choose known breeders for consistency.
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