Critical Jack strain illustration

Critical Jack

aka Critical Jack HererHybrid
4(180)
Type
Hybrid
THC
13.5%–17.2%
CBD
—
Main terpene
Terpinolene
Parents
Critical Plus × Jack Herer

THC range is the middle half of 15 public lab tests of Critical Jack flower (2020–2022). Source: Cannlytics lab results, CC BY 4.0.

About Critical Jack

Critical Jack is a hybrid bred from Critical Plus and Jack Herer. You may also see it sold as Critical Jack Herer. Reviews most often mention feeling focused, energetic and uplifted.

THC and potency

Across 15 public lab tests of Critical Jack flower between 2020 and 2022, the median result was 14.6% total THC, with half of all samples falling between 13.5% and 17.2%. That is on the milder side for modern flower. Potency varies by grower and batch, so always check the label.

Aroma, flavour and terpenes

Its reported terpene profile is led by terpinolene, with caryophyllene and pinene. Terpinolene is known for fresh, herbal brightness with hints of pine and flowers, while caryophyllene adds black pepper and warm spice. On the palate, people pick out pine, citrus and lemon.

Reported effects

Beyond feeling focused, reviewers also mention feeling talkative and happy. Some consumers say they reach for it when dealing with stress, depression and fatigue. The side effects mentioned most are anxiety, dry eyes and headaches. These are personal reports, not medical advice.

Genetics

Parents: Critical Plus and Jack Herer. Critical Jack is also a parent of Pai Gow.

Critical Jack terpenes

Relative strength as reported by consumers.

  • terpinoleneFresh, herbal
  • caryophyllenePepper, spice
  • pinenePine
  • ocimeneSweet, herbal
  • myrceneEarthy, musky
  • limoneneCitrus

Critical Jack effects

focusedenergeticupliftedtalkativehappycreativearousedhungryeuphoric

Strains similar to Critical Jack

Matched on reported effects, terpenes and type.

Green Line OG strain illustrationGreen Line OGHybridSuper Jack strain illustrationSuper JackSativaClementine strain illustrationClementineSativaGolden Nugget strain illustrationGolden NuggetHybridJesus OG cannabisJesus OGIndicaDurban Poison strain illustrationDurban PoisonSativa

Critical Jack FAQ

How strong is Critical Jack?
In 15 public lab tests, Critical Jack flower had a median of 14.6% total THC; most samples were between 13.5% and 17.2%.
Is Critical Jack an indica or a sativa?
Critical Jack is generally classed as a hybrid.
What strains make Critical Jack?
Critical Jack is a cross of Critical Plus and Jack Herer.
What does Critical Jack smell like?
Its main terpene is terpinolene (fresh, herbal), and people describe the flavour as pine, citrus, lemon.