THC 30.8%Sativa
Revert CannabisRevert Kief Infused Pre-Ground Flower Galactic Jack · 14g
$70.00
$79after tax
Sativa
All strains Galactic Jack
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Quick answer · What is the Galactic Jack cannabis strain?
Galactic Jack arrives like a clear-sky morning in mid-October — bright, expansive, and quietly electrifying. A deliberate cross of two celebrated sativa lineages, it carries the sharp citrus clarity of Jack Herer with the otherworldly uplift of Space Queen, producing a cerebral current that feels both purposeful and pleasantly unmoored. For those who seek a thoughtful daytime companion at ZenZest, this is a strain worth sitting with.
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About Galactic Jack
Everything to know about Galactic Jack.
Lineage & origin
Galactic Jack was developed by TGA Subcool Seeds, the Oregon-based collective founded by the late breeder Subcool, who built a reputation throughout the 2000s for releasing genetically precise, terpene-forward hybrids with memorable names and documented parentage. The strain is a cross of Jack Herer and Space Queen — two of the most influential sativa-leaning cultivars of their respective eras. Jack Herer, named for the cannabis activist and author, was originally developed in the Netherlands in the 1990s by Sensi Seeds. It is itself a complex cross, believed to involve Haze, Northern Lights No. 5, and Shiva Skunk, though Sensi Seeds has not formally published its exact formula. Jack Herer became a cornerstone of the sativa canon and a Dutch Passion award winner, lending Galactic Jack its structured, resin-coated architecture and bright herbal clarity. Space Queen — the other parent — was bred by Vic High (of BC Growers Association) and later refined by Subcool himself. A cross of Romulan and Cinderella 99, Space Queen contributes a fruity, almost pineapple-like sweetness alongside a cerebral intensity that distinguishes it from more grounded cultivars. Together, the pairing created Galactic Jack: a strain that leans into interstellar clarity while retaining the earthy, resinous backbone of classic Jack Herer phenotypes. TGA Subcool released the line in the mid-2000s, and it has maintained a loyal following in connoisseur circles since.
Effects
Onset with Galactic Jack is relatively swift for a sativa-dominant cultivar — most consumers report feeling the first cerebral lift within five to ten minutes of inhalation. The initial wave is characterized by a clean mental acceleration: thoughts arrive with unusual clarity, conversation flows more easily, and there is a gentle brightening of sensory perception without the anxious edge that can accompany more intensely stimulating sativas. At peak, the experience is primarily cerebral. The dominant cannabinoid profile skews toward THC-forward sativa expression, and the terpene combination of terpinolene, myrcene, and caryophyllene creates a layered effect — terpinolene's known association with uplifting, light-touch stimulation pairs with myrcene's mild grounding quality to prevent the experience from feeling unanchored. Some phenotypes lean more toward the Space Queen parentage and deliver a more euphoric, almost floaty character, while others favor the Jack Herer side and present a sharper, more focused cognitive quality. Duration typically runs two to three hours, with the peak occupying the first ninety minutes. The comedown is gradual and relatively gentle — the mental brightness softens into a contented ease without significant sedation, making it a functional choice for daylight hours. As with any potent sativa, those new to cannabis or sensitive to THC should approach Galactic Jack with measured intention and a start-low, go-slow philosophy.
Aroma, flavor & terpenes
The aromatic profile of Galactic Jack is where its dual lineage becomes most legible. The dominant terpene in most well-grown phenotypes is terpinolene, which expresses as a complex floral-citrus-herbal signature — bright without being sharp, and layered in a way that rewards a slow, attentive inhale. Terpinolene is relatively uncommon as a dominant terpene and is associated with strains like Jack Herer and Golden Pineapple; its presence here gives Galactic Jack a distinctive aromatic identity. Secondary terpenes typically include myrcene, which softens the citrus edge with a faintly tropical, almost overripe mango note, and caryophyllene, which introduces a grounding spice that keeps the bouquet from floating entirely into sweetness. Ocimene, when present, adds a delicate herbal and slightly woody dimension that recalls fresh-cut basil or sweet anise. Some cuts also express light notes attributable to pinene, lending a clean, resinous pine undercurrent. On the palate — whether consumed via flower or vapor — Galactic Jack opens with citrus and a bright herbal sharpness reminiscent of lemon verbena. The mid-palate develops a tropical fruit softness inherited from Space Queen's Cinderella 99 genetics. The finish is clean and slightly spiced, with caryophyllene providing a faint pepper note that lingers pleasantly on the exhale. Vapor delivery, particularly at lower temperatures, tends to preserve the terpinolene character most faithfully.
Appearance
Galactic Jack buds occupy a middle ground between the loose, elongated structure typical of equatorial sativas and the denser, more compact architecture of its Northern Lights-influenced Jack Herer parent. The calyxes stack in a slightly irregular, open formation — not airy, but with enough space between them to suggest the plant's sativa heritage without sacrificing the visual density that quality-conscious consumers expect. The color palette is primarily a medium, slightly yellow-tinted green, which deepens toward olive in the lower leaves when grown in cooler late-cycle temperatures. Pistils are typically amber to burnt orange and curl generously across the surface. Trichome coverage is substantial, giving cured buds a frosted, almost silvery appearance in direct light — a trait clearly inherited from the resin-prolific Jack Herer lineage. Overall presentation is refined without being ostentatious, the kind of bud that rewards closer inspection.
Growing notes
Galactic Jack is considered a moderately experienced cultivar — rewarding for growers who understand sativa management but potentially challenging for beginners working with limited vertical space. It reflects its tall, branchy sativa parentage during the vegetative phase and can stretch considerably in the early weeks of flower, making training techniques such as low-stress training (LST) or screen-of-green (SCROG) methods particularly useful for indoor environments. Flowering time typically ranges from nine to ten weeks indoors, aligning closely with its Jack Herer parentage. Outdoor cultivation in a warm, Mediterranean-style climate yields well, with harvest typically falling in mid-to-late October in the Northern Hemisphere. Indoor yields are moderate to generous when light intensity and canopy management are handled attentively. The strain prefers slightly lower humidity during late flower to protect the open bud structure from moisture-related issues. TGA Subcool's breeding practices emphasized stable phenotype expression, so growers can generally expect reasonable consistency across a pack.
When it's best enjoyed
Galactic Jack is most at home in the morning or early afternoon — the hours when mental engagement is welcome and the day still holds its full range of possibility. It suits the kind of focused creative work that benefits from an open, receptive mind: writing at a window table, working through a design problem, or returning to a project that requires both energy and precision. The terpinolene-forward profile makes it a particularly good companion for activities that engage the senses without requiring perfect stillness. Socially, Galactic Jack can elevate a small gathering of curious, conversational people — a Sunday brunch, a visit to a gallery or market, or an afternoon walk through a neighborhood that rewards attention. For a food pairing, consider something that mirrors the strain's citrus-tropical terpene signature: a well-made ceviche, a yuzu-dressed salad, or lightly spiced pineapple. Musically, it pairs naturally with bright, melodic electronic compositions or acoustic recordings with spatial depth — Brian Eno's ambient work, a Nils Frahm record, or a vinyl session of classic psychedelic rock from the late 1960s, which shares a certain terpene-inflected spirit with the strain's own lineage.
If you like Galactic Jack, also explore
Jack Herer
As a direct parent of Galactic Jack, Jack Herer offers the same structured cerebral clarity and resinous, herbal-citrus terpene character with a slightly earthier, less fruity expression.
Space Queen
The other parent of Galactic Jack, Space Queen delivers a comparable euphoric lift with a more pronounced tropical fruit sweetness and the Cinderella 99 lineage intact.
Golden Pineapple
A terpinolene-dominant cultivar sharing similar citrus-tropical aromatics and an uplifting, clear-headed effect arc that will appeal to anyone drawn to Galactic Jack's daytime character.
Durban Poison
A pure sativa landrace with a similarly bright, focused cerebral onset and a terpene-forward sweetness that resonates with Galactic Jack fans seeking even cleaner sativa expression.
Super Silver Haze
A Haze-family sativa sharing Jack Herer's genetic ancestry, offering a long-lasting, cerebral, and lightly spiced experience that appeals to the same thoughtful, energized consumer.
Common questions
Is Galactic Jack indica or sativa?+
Galactic Jack is a sativa-dominant hybrid, bred by TGA Subcool Seeds from Jack Herer and Space Queen — both of which lean strongly sativa in character. Its effects reflect that heritage: the experience is primarily cerebral, uplifting, and clear-headed rather than sedating. Consumers seeking a body-forward or deeply relaxing experience will likely find other cultivars more suitable for that purpose.
What does Galactic Jack taste like?+
Galactic Jack offers a layered palate dominated by bright citrus and herbal notes — think lemon verbena and fresh herbs — followed by a tropical fruit softness on the mid-palate inherited from its Space Queen parent. The finish carries a faint spiced pepper quality from caryophyllene. Vapor delivery tends to highlight the terpinolene-driven floral and citrus character most expressively.
What are the typical effects of Galactic Jack?+
The effects are primarily cerebral: onset arrives within five to ten minutes and brings mental clarity, a brightening of sensory perception, and an ease in social or creative engagement. The peak experience is uplifting and focused rather than overwhelming. Duration runs roughly two to three hours, with a gentle, non-sedating comedown. It is considered a functional daytime cultivar by most experienced consumers.
What strains are similar to Galactic Jack?+
Consumers who enjoy Galactic Jack typically also appreciate Jack Herer and Space Queen, its direct parent strains. Golden Pineapple shares a terpinolene-dominant profile and comparable citrus-tropical aromatics. Durban Poison offers a similarly clear, energized sativa experience, while Super Silver Haze provides a Haze-lineage alternative with shared cerebral character and a slightly more complex, spiced finish.
Is Galactic Jack good for beginners?+
Galactic Jack is a potent sativa-dominant cultivar and warrants some caution for those new to cannabis. Its cerebral intensity and THC-forward profile can occasionally contribute to heightened heart rate or racing thoughts in sensitive individuals. A start-low, go-slow approach is advisable — a modest initial amount in a comfortable, familiar setting is a sensible way to become acquainted with this particular cultivar's character.
What are the dominant terpenes in Galactic Jack?+
Terpinolene is generally considered the dominant terpene in Galactic Jack, contributing its signature floral, citrus, and herbal complexity. Myrcene appears as a secondary terpene, adding a soft tropical warmth and mild grounding quality. Caryophyllene provides a spiced, peppery finish and a degree of balance. Ocimene and pinene may also appear in some phenotypes, adding herbal and resinous pine dimensions respectively.
Who bred Galactic Jack and when was it released?+
Galactic Jack was bred by TGA Subcool Seeds, the collective led by the late breeder known as Subcool, who was based in Oregon and became influential in the American craft cannabis community during the 2000s. The strain was developed as a cross of Jack Herer and Space Queen and released in the mid-2000s alongside a broader catalog of terpene-forward, documentable hybrids that defined much of TGA's identity.
What time of day is best for consuming Galactic Jack?+
Galactic Jack is well-suited to morning or early afternoon consumption, given its energizing, clarity-forward effect profile. Its terpinolene-dominant character supports engaged, creative, or social activities during daylight hours. Evening use is less conventional for this cultivar — its cerebral stimulation may interfere with the relaxation or sleep preparation that consumers typically seek from an evening session.
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