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sativa-dominant strain

Ultra Jack

Ultra Jack is a sativa-dominant strain with the lineage Jack Haze × Ultra Sour. Typical aromas include earthy, citrusy and sour notes. The effects are generally described as energetic, uplifting and clear.

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Character profile

Aroma, effects and terpenes

Aromas

  • earthy
  • citrusy
  • sour
  • fresh

Effects

  • energetic
  • uplifting
  • clear
  • heady
  • sociable
  • stimulating
  • mood-enhancing
  • balancing

Terpenes

  • Myrcene
  • Ocimene
  • Limonene

Cannabinoid profile

Documented ranges

THC 30 %
CBD up to 1 %

The values are provided for context. Actual levels may vary depending on batch, phenotype and growing environment.

Genetics

Parent lineage and family tree

Ultra Jack is at the top. Below are the documented parent lines through the 4th generation.

Editorial profile

Ultra Jack in detail

Origin & classification

Ultra Jack is a sativa-leaning strain from Jack Haze × Ultra Sour. With up to 30 % THC, Ultra Jack clearly falls into the very strong category. CBD plays more of a minor role at up to 1 %.

Aroma & flavor

Ultra Jack’s aroma is primarily earthy, citrusy, sour and fresh. Myrcene, ocimene and limonene complement this impression and give the profile additional depth. The blend of sweeter and classic spicy notes makes the strain more distinctive than many smoother standard hybrids.

Terpene profile

Ultra Jack’s effects are generally described as energetic, uplifting, clear and heady. This is often what makes the strain interesting, as it does not lean in just one direction but engages both the mind and body.

Effect tendency

Ultra Jack therefore comes across as more classic and direct than sweet and playful. Its open, clear effects are one reason it is often described as an enjoyable strain for social gatherings. Many sources describe the strain as multidimensional rather than one-dimensional—potent without a single aspect dominating.

Cannabinoids, flowering & appearance

Ultra Jack is therefore particularly suited to people who want to experience aroma and effects together in a balanced way. Those who enjoy classic, direct strain profiles that are not overly polished will likely connect with this direction more than with purely trend-driven strains.

Further classification

Up to 30 % THC clearly places Ultra Jack among modern, very potent strains. CBD remains a minor part of Ultra Jack’s profile at up to 1 %. Aromatically, it presents a sweet, fruity direction: earthy, citrusy, sour and fresh. Ultra Jack combines a brighter side with relaxing components: energetic, uplifting, clear, heady and sociable. With Jack Haze x Ultra Sour, the strain’s origin remains easy to trace. In Ultra Jack, the aroma is not merely an addition but a central part of the strain’s identity. Limonene complements Ultra Jack’s sweet, fruity side particularly well and gives it a fresher contour. When comparing it with other strains, this effect profile is often more informative than a single THC value.

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Questions and answers

Frequently asked questions about Ultra Jack

What type of strain is Ultra Jack?

We list Ultra Jack as a sativa-dominant strain with the parent lineage Jack Haze × Ultra Sour.

What genetics are behind Ultra Jack?

Ultra Jack’s parent lineage is Jack Haze × Ultra Sour.

What does Ultra Jack smell and taste like?

Aromatically, Ultra Jack is primarily earthy, citrusy, sour and fresh. Depending on the batch and phenotype, the expression may vary in intensity.

Which terpenes are associated with Ultra Jack?

Ultra Jack’s profile features myrcene, ocimene and limonene. They complement the described aroma profile.

What effects can be expected from Ultra Jack?

We primarily describe Ultra Jack as energetic, uplifting, clear, heady, sociable, stimulating, mood-enhancing and balancing. Effects are subjective impressions and are not a medical promise.

How high is Ultra Jack’s THC content?

A THC level of 30 % is stated for Ultra Jack. Actual values may vary depending on batch, phenotype and growing environment.