
- Cactus Jack — clear lift, strong resin
Cactus Jack
Cactus Jack a resinous hybrid that rewards careful greenhouse and outdoor management in the UK.
- High THC hybrid with clear lift
- Performs well in managed greenhouse environments
- Generous yields for intermediate growers
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22-28% |
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<1% |
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JACK HERER x OG KUSH |
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Hybrid |
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Intermediate |
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8-10 weeks |
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Medium to tall |
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High (up to 500 g/m² indoor, 300-500 g/plant outdoor) |
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Citrus, Earthy, Spicy |
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Feminised |
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Humid Greenhouse |
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Uplifting, Creative, Relaxing |
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Both |
About Cactus Jack
Cactus Jack is a high-THC hybrid bred from JACK HERER x OG KUSH that balances cerebral lift with physical ease. The plant suits greenhouse and sheltered outdoor sites, performs well under managed humidity and produces dense, aromatic buds with a citrus and earthy profile.
Cactus Jack is a well balanced hybrid with both sativa and indica traits. The variety combines energetic clarity with physical ease.
THC levels are high and typically sit between 22 and 28 percent. Expect pronounced psychoactive effects that reward cautious dosing.
CBD is low, usually under one percent. This strain is chosen for its THC-driven profile rather than CBD therapy.
Cactus Jack descends from JACK HERER x OG KUSH. The cross aims to merge sativa-driven focus with indica resin production.
Seeds are feminised to ensure predominantly female plants. This reduces the need to cull males and helps plan canopy layout.
Growing Cactus Jack in humid greenhouse conditions needs vigilant ventilation and mould prevention. The overall difficulty is intermediate because the plant tolerates humidity but requires disease monitoring.
Flowering runs around eight to ten weeks depending on phenotype. Buds develop dense trichome coverage in the final weeks.
Yield is generous when plants receive steady light and nutrition. In a well-managed greenhouse in Somerset you can expect high production per plant.
Plants reach a medium to tall height with a dominant central cola and useful lateral branching. The structure suits topping, low-stress training or sea-of-green.
Indoors this strain responds well to SCROG and controlled feeding, and in Somerset growers often use greenhouses to extend the season. Outdoors it performs reliably in sheltered sites with good airflow.
In Somerset this strain benefits from a controlled greenhouse set-up with careful humidity management. Humid greenhouse conditions demand dehumidifiers, strong airflow and regular mould checks.
Effects begin with a clear uplift and a burst of creativity. A gentle physical relaxation follows without heavy sedation.
Flavour blends bright citrus rind with earthy pine and a subtle spice. Smoke is clean on the inhale and smooth on the exhale.
Frequently Asked Questions
Common questions about this strain, covering growth, effects, and suitability for UK conditions.
Start with a balanced vegetative feed and increase phosphorus and potassium as flowering begins; monitor run-off EC and adjust to avoid nutrient burn.
Use extract fans, dehumidifiers and ensure canopy spacing; remove any amber or damp leaf material immediately to lower infection risk.
Harvest when most trichomes are cloudy with some amber for balanced effects; check multiple buds as ripeness can vary across the plant.
Yes, it can be grown outdoors in sheltered sites with good airflow and sunlight; in cooler parts of the season a greenhouse in Somerset helps ripen buds fully.
Spider mites and aphids are common, especially in warm, humid conditions; use integrated pest management and check undersides of leaves weekly.
Selective defoliation can improve light penetration and airflow; avoid heavy leaf removal late in flowering to prevent stress.
A 7-14 day flush with plain water is typical depending on medium and nutrient load; taste and burn quality will indicate success.
Use low-stress training and light topping to manage height and promote even bud sites; these methods are useful for outdoor cannabis cultivation to improve yields.
Extra CO2 can boost yields under very high light but is unnecessary for most hobby setups; focus first on stable environment and nutrient supply.
Dry slowly at 10-15°C and 50-60% RH until stems snap, then cure in jars with daily burps for two weeks, checking for excess moisture or mould.
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