
- Clear head. Reliable finish.
Jupiter Jack
Jupiter Jack is a sativa-dominant hybrid that delivers clear, uplifting effects with a steady body calm and good terpene complexity.
- Bright cerebral high with a steady body feel
- Perthshire-tested resilience for cool climates
- Great terpene clarity after a careful cure
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18-22% |
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0.5-1% |
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Jupiter x Jack |
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Sativa-dominant hybrid |
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Intermediate |
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8-10 weeks |
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Medium; 1.2–1.8 m outdoors |
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Medium to high |
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pine, citrus, earthy spice |
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Feminised |
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cool northern summers |
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uplifting, focused, gentle relaxation |
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Indoor and outdoor; favours controlled indoor environments in Perthshire |
About Jupiter Jack
Jupiter Jack is a sativa-dominant hybrid bred for clarity and reliable structure. It performs well under controlled indoor conditions and can finish outdoors in favourable sites, but it responds best to steady care. The profile leans to pine and citrus with an earthy spice, and users report uplifted focus followed by gentle relaxation. For growers in cool northern summers, attention to airflow, training and harvest timing keeps yields consistent.
Sativa-dominant hybrid that leans toward mental clarity with a steady body effect. It maintains energy without excess agitation.
THC typically sits in the upper mid-range for modern varieties. Most well-cultivated plants test between 18 and 22 per cent.
CBD levels are low relative to THC in this line. Expect values around half to one per cent in standard tests.
The lineage comes from a Jupiter x Jack cross, combining clarity with robust vigour. Both parents contribute terpene depth and structural resilience.
Seed runs are commonly offered as feminised for straightforward canopy planning. Regular seed options appear occasionally for breeders selecting local traits.
This strain suits intermediate growers who can manage canopy shape and feeding. It tolerates cool northern summers but responds best to consistent attention to airflow and nutrients.
Flowering finishes in roughly eight to ten weeks under indoor lights. Outdoor finishing depends on the season and may be later in marginal climates.
Indoor yields are reliable with sea of green or screen of green training. Outdoor plants can yield well if given a sheltered site and a long, dry autumn.
Plants develop a medium stature with several strong side branches when trained. Outdoors they commonly reach between 1.2 and 1.8 metres in a good season.
In Perthshire growers often choose indoor rigs to control temperature, humidity and light. Outdoor crops in Perthshire need a sheltered, sunny aspect to avoid autumn rain.
Growing Jupiter Jack in Perthshire requires attention to cool northern summers and possible late-season rain. Choose a protected outdoor site or favour indoor setups to secure a reliable finish.
The high begins with a clear, uplifting focus that sharpens creativity. A smooth body calm follows without heavy sedation.
Flavours show bright citrus and pine over an earthy, slightly spicy base. Smoke is clean and leaves a dry, pleasant aftertaste.
Frequently Asked Questions
Common questions about this strain, covering growth, effects, and suitability for UK conditions.
Use 18/6 for veg and switch to 12/12 for flowering to trigger consistent bloom. Maintain even light intensity and avoid large fluctuations.
Water moderately and allow the top of the medium to dry slightly between feeds. Overwatering worsens root health in cooler climates.
A balanced NPK regime with higher phosphorus and potassium in bloom supports resin and terpene production. Add silica and trace elements for plant strength.
Begin low-stress training early in veg to broaden the canopy. Finish high-stress techniques before the stretch ends to avoid shocking flowering plants.
Select a sunny, well-ventilated site and keep canopy density low to improve airflow. Remove weak inner growth and avoid late fertilisation that delays ripening.
Yes, organic feeds and compost teas work well when properly balanced. Monitor pH and avoid excessive nitrogen late in flowering.
Use regular inspections, sticky traps and beneficial insects for early control. Neem oil and potassium soap work for light infestations but avoid during heavy bloom to protect terpenes.
Dry slowly at 18–20°C with moderate humidity then cure in jars, burping daily for the first two weeks. Proper curing improves aroma and smoothness.
Many growers flush for one to two weeks to reduce residual fertilisers. Watch trichome maturity to time harvest rather than relying solely on flushing.
Keep temperatures stable around 22–26°C in veg and slightly cooler in bloom with good RH control between 40–55 per cent. Prioritise ventilation, compact training and consistent light to suit the strain's medium height.
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