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Critical Jack

Critical Jack

Sativa - 55%
Recommended time of use: Morning
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About Critical Jack

Critical Jack is a well-balanced, 50/50 hybrid strain of cannabis, that can occasionally lean to the Sativa side depending on the individual grower. In its true form its a cross between Critical Plus and Jack Herer and tends to carry a THC level of around 20 percent. 

Critical Jack is a world traveler and has become highly cultivated in recent years, especially in Europe, and has won some prizes including 1st place in the 2015 San Bernardino Hempcon Cup.

Critical Jack is now widely popular throughout California and much of the West Coast and has the potential, with its full-bodied appearance and robust trichomes, to compete with the best cannabis strains out there.

The aroma is floral, fruity, and pine smelling. The scent is highly valued with its lemony smell that hits right away followed by the sweet floral aroma - although the floral undernotes often arrise only when the bud is crumbled by hand or crushed in the grinder. 

The smoke is light, not full bodied so medical users may prefer it in order to avoid heavy coughing. People can use this herb in the morning or daytime due to its cerebral, energy and mood boosting effects.

Recreational users will find that the effects are long-lasting. People report that they enjoyed the cerebral effects and found it to be a highly sociable strain. 

Medical uses include headaches, depression, anxiety, and appetite stimulation. The pain relieving and anxiety reducing effects are well balanced with a psychoactive push. THC content is above average, but not extremely high. Users can expect to feel good for about two hours and experience an uplifting sensation in the head with a delayed and muted effect in the body.

Critical Jack is a fairly fast growing strain with flowering time between 57-67 days when grown indoors. Outdoors you'll want to get started in mid-April with harvest time in late-September or early October. Yields are well above average with fat nugs that can drastically weight down a plant in its final weeks.

THC Content - 20.0% Highest Test

Average Sativa
Critical Jack Highest Test
Critical Jack Average

Common Usage


Dry Eyes
Cotton Mouth


November 09, 2018
Favourite strain. I stop smoking cannabis for 15 years, and I started again 1 year ago and this strain eased me in nice and good. I trust this strain not to get me too heady. It is perfect for before bed for a nice sleep
November 09, 2016
love this strain. no paranoia
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