Jack Kush
aka Jack OG, Jk
Jack Kush is a balanced hybrid (50-70% sativa) combining Jack Herer and Master Kush genetics, created by Med-Man Brand in the 1990s. With 13-22% THC and a rare terpinolene-dominant profile, it delivers uplifting mental clarity paired with gentle body relaxation. The aroma blends sweet citrus, sage, diesel, and pine, while effects include euphoria, focus, creativity, and stress relief without heavy sedation. Ideal for daytime productivity, social activities, or creative projects, Jack Kush offers therapeutic benefits for stress, pain, and mood disorders while maintaining functional, clear-headed effects.
The Short Answer
What kind of high is Jack Kush?
Terpinolene-led and sweet-citrus on the palate, most often reported uplifted and picked for work.
Terpenes decide how a strain feels — THC% only decides how strong the dose is. Here is the family, the chemistry behind it, and what people reach for it to do.
Terpenes are the aromatic compounds that shape the character of a high. The blend a strain carries — not its THC percentage — is what makes one feel bright and social and another heavy and sleepy, which is why the top three are listed rather than just the leader.
Terpene percentages belong to the jar, not the strain. They move with harvest timing, drying, cure and shelf age — the lighter ones literally evaporate. What holds steady is which terpenes lead, so that is what we rank.
See the full profile →Learn how terpenes work →- Uplifting
- Antioxidant
- Antibacterial
- Phellandrene
- Caryophyllene Spicy, peppery, woody
Ordered by measured share — the exact percentages shift with every batch and cure.
The effects reported most often across our research sources. Every body is different — set, setting and tolerance all move the result.
- Energetic
- Happy
The activities this strain gets picked for most often, leading with the specific ones rather than the broad buckets nearly every strain shares. A starting point, not a prescription — what works for you is personal.
See the full list →The flavor notes reported most often across our research sources, led by the most specific one — flavor tracks the terpene blend, but cure, age and how you consume it all shift what actually lands on the palate.
See the full profile →- Sage
- Diesel
The aroma notes reported most often across our research sources — what the jar gives up before you light it. This is the strain's own recorded profile, not the textbook aroma of its lead terpene.
See the full profile →- Sweet
- Floral
- Best Time anytime
- Era 1990
- Rarity Common
Genetics Hybrid A lineage label, not an effects predictor — most modern flower is a hybrid, and the terpene mix above is what you will actually notice.
Potency Check the label, not the strain Varies by batch, grower and harvest — check the label on the product you are buying. Scan your label → Reported ranges →
Heads up Most reported: dry mouth and dry eyes. Responses vary — start low, go slow. Review safety →
Your guided read
6 chapters on Jack Kush
Start at the top and work down — each chapter builds on the one before it. Jump to any chapter to read it on its own.
- The Experience How this strain is reported to feel, and when people reach for it.
- Look, Aroma & Taste The smell and flavour you will actually notice — and the terpenes behind them.
- Chemistry & Research Therapeutic reports, published research, and what the lab numbers do — and do not — tell you.
- Using It Well Consumption methods that suit this strain, and the side effects to plan around.
- Where It Comes From The genetics, the breeders, and the recognition it has picked up along the way.
- The Full Story The long-form profile and community video reviews, once you want the detail.
Strain Highlights
Key insights at a glance
The Experience
Professor High Says...
In-depth strain breakdown from Professor High, our AI cannabis expert
Just took a few hits of Jack Kush and I'm experiencing this fascinating synergy between mental sharpness and physical ease. The terpinolene is doing exactly what the chemistry predicts—I feel this herbaceous, uplifting clarity washing over my thoughts, like someone just organized all the tabs in my brain. There's this bright, citrusy euphoria dancing around my temples, courtesy of that limonene, while the caryophyllene is working its anti-inflammatory magic on my shoulders.
What's remarkable is how the sativa genetics keep me engaged and focused—I'm not scattered or anxious, just pleasantly stimulated with this desire to create or connect. Meanwhile, the Master Kush lineage is providing this gentle body cushion, like I'm sitting on a cloud that doesn't pull me down into it. My muscles feel loose but responsive, not sedated. The cerebral effects are definitely leading—I'm having insights, making connections, feeling conversational—but there's enough physical presence to keep me grounded and comfortable. This is what we call a functional hybrid in the lab: therapeutic relief without impairment. Perfectly balanced, as all things should be.
Effects Profile
Uplifted · Energetic · Happy
Best enjoyed during anytime
Balanced for any time of day
Best For
Work · Creative Projects · Socializing
Effect Sources
- 1 Jack Kush Marijuana Strain Information & Reviews allbud.com(opens in new tab)
- 2 Jack Kush Weed Strain Information leafly.com(opens in new tab)
- 3 Jack Kush Strain - Review & Info askgrowers.com(opens in new tab)
- 4 Jack Kush Strain - Hybrid Cannabis Review, 19.0% THC ... hytiva.com(opens in new tab)
- 5 Jack Kush greybeardseeds.com(opens in new tab)
5 verified sources
Look, Aroma & Taste
Aroma & Flavor
Citrus · Sweet · Earthy
Aroma & Flavor Sources
- 1 Jack Kush Marijuana Strain Information & Reviews allbud.com(opens in new tab)
- 2 Jack Kush Weed Strain Information leafly.com(opens in new tab)
- 3 Jack Kush Strain - Review & Info askgrowers.com(opens in new tab)
- 4 Jack Kush Strain - Hybrid Cannabis Review, 19.0% THC ... hytiva.com(opens in new tab)
- 5 Jack Kush greybeardseeds.com(opens in new tab)
5 verified sources
Aromas
Flavors
Terpene Profile
Terpinolene leads · 10 terpenes mapped
Terpene Sources
1 verified source
Terpene Distribution
Terpene profile: Terpinolene 0.3%, Phellandrene 0.3%, Caryophyllene 0.1%, Limonene 0.1%, Pinene 0.1%, Myrcene 0.0%, Ocimene 0.0%, Eucalyptol 0.0%, Humulene 0.0%, Linalool 0.0% .
Terpinolene Dominant
Flavor: Fresh, piney, floral, citrus
Phellandrene
Caryophyllene
Flavor: Spicy, peppery, woody
Limonene
Flavor: Citrus, lemon, orange
Pinene
Flavor: Pine, fresh forest
Myrcene
Flavor: Earthy, musky, fruity
Ocimene
Flavor: Sweet, herbaceous, woody
Eucalyptol
Flavor: Mint, cool, refreshing
Humulene
Flavor: Hoppy, woody, earthy
Linalool
Flavor: Floral, lavender, sweet
Full Profile
Terpinolene
0.33%
Flavor Profile:
Fresh, piney, floral, citrus
Effects:
Phellandrene
0.29%
Caryophyllene
0.13%
Flavor Profile:
Spicy, peppery, woody
Effects:
Limonene
0.06%
Flavor Profile:
Citrus, lemon, orange
Effects:
Pinene
0.05%
Flavor Profile:
Pine, fresh forest
Effects:
Myrcene
0.04%
Flavor Profile:
Earthy, musky, fruity
Effects:
Ocimene
0.04%
Flavor Profile:
Sweet, herbaceous, woody
Effects:
Eucalyptol
0.03%
Flavor Profile:
Mint, cool, refreshing
Effects:
Humulene
0.02%
Flavor Profile:
Hoppy, woody, earthy
Effects:
Linalool
0.01%
Flavor Profile:
Floral, lavender, sweet
Effects:
Appearance
Deep forest green · Lime green highlights
Color Palette
Texture
Medium-dense buds with sticky, resinous coating and slightly tapered, spear-like structure. Flowers break apart easily to reveal lighter green interior with abundant trichome coverage.
Crystal Density
high
Heavy frost coating
Chemistry & Research
Medical Effects
10 reported therapeutic uses on file
Medical Effect Sources
- 1 Jack Kush Marijuana Strain Information & Reviews allbud.com(opens in new tab)
- 2 Jack Kush Weed Strain Information leafly.com(opens in new tab)
- 3 Jack Kush Strain - Review & Info askgrowers.com(opens in new tab)
- 4 Jack Kush Strain - Hybrid Cannabis Review, 19.0% THC ... hytiva.com(opens in new tab)
- 5 Jack Kush greybeardseeds.com(opens in new tab)
5 verified sources
Mental Effects
- •Stress Relief
Reduces stress and tension without excessive sedation
- •Anxiety Management
Alleviates anxiety symptoms with balanced effects
- •Depression Support
Elevates mood and combats depressive symptoms
- •Mental Clarity
Promotes focus and clear thinking despite relaxation
Professor High visualization
Body Effects
- •Pain Management
Reduces chronic pain and muscle tension effectively
- •Inflammation Reduction
Decreases inflammation associated with various conditions
- •Appetite Stimulation
Increases appetite for those with loss of appetite
- •Muscle Spasm Relief
Alleviates muscle spasms and tension
- •Migraine Relief
Reduces frequency and intensity of migraines
- •Sleep Support
Helps with insomnia and promotes restful sleep
Medical Disclaimer: This information is AI-generated based on available research and user reports, provided for educational purposes only, and is not intended as medical advice. Cannabis affects everyone differently. Consult with a qualified healthcare professional before using cannabis for medical purposes. Do not use cannabis if pregnant, nursing, or have a medical condition without consulting your doctor.
What Research Says
Peer-reviewed studies, terpene science & safety guidance
What does the research say about Jack Kush?
Jack Kush is a hybrid cannabis strain containing up to 22.0% THC, with a terpene profile dominated by Terpinolene and Phellandrene. This page currently has good data confidence. Below are profile sources when available plus authoritative resources for understanding the compounds in this strain.
Terpene Research
Cannabinoid Information
Cannabis Regulations & Safety
Educational resources only — not medical advice. Always consult a qualified clinician for health decisions.
Cannabinoids (THC & CBD)
THC 13-22% · Type I chemovar
THC% tells you how strong. Terpenes tell you how it feels.
THC percentage is a property of the product in your hand, not of the strain. It shifts with the batch, the grower, the harvest, and how the flower was cured and stored — the same strain can test several points apart from two different jars.
Treat the ranges below as market context for what to expect on a shelf — then read the actual label on the product you are buying, and use the terpene profile to judge how it will feel.
High THC (>15%), low CBD (<1%) - Most common recreational strains
Using It Well
Consumption Methods
Vaping · Smoking · Concentrates
Recommended Methods
Side Effects
Dry Mouth · Dry Eyes · +3 more
Side effects vary by individual. Start low, go slow. Consult a healthcare professional with concerns.
These are commonly reported effects. Individual experiences may vary based on dosage, tolerance, and consumption method.
Where It Comes From
Lineage & History
Jack Herer × Master Kush · bred by Med-Man Brand
Lineage Sources
- 1 Jack Kush Marijuana Strain Information & Reviews allbud.com(opens in new tab)
- 2 Jack Kush Weed Strain Information leafly.com(opens in new tab)
- 3 Jack Kush Strain - Review & Info askgrowers.com(opens in new tab)
- 4 Jack Kush Strain - Hybrid Cannabis Review, 19.0% THC ... hytiva.com(opens in new tab)
- 5 Jack Kush (Med-Man Brand) :: Cannabis Strain Info seedfinder.eu(opens in new tab)
- 6 Jack Kush greybeardseeds.com(opens in new tab)
6 verified sources
Jack Kush is a hybrid strain resulting from a cross between Jack Herer and Master Kush (or OG Kush in some phenotypes). The strain maintains a balanced sativa-indica profile with predominantly sativa-leaning characteristics in some expressions.
Genetics
Origin Timeline
First cultivated in 1990
Breeder
Med-Man Brand
The Full Story
Detailed Description
The long-form profile · ~5 min read
A Legendary Hybrid Born from Cannabis Royalty
Jack Kush stands as a testament to the art of cannabis breeding, combining two of the most celebrated strains in cannabis history: Jack Herer and Master Kush (with some phenotypes incorporating OG Kush). Created by Med-Man Brand in the 1990s, this balanced hybrid delivers a sophisticated experience that honors both its sativa and indica lineages. With THC levels ranging from 13-22% and a unique terpinolene-dominant profile, Jack Kush offers a refreshing departure from the myrcene-heavy strains that dominate today's market. Whether you're seeking creative inspiration, stress relief, or simply an enjoyable afternoon experience, this strain delivers a well-rounded effect profile that appeals to both novice and experienced consumers.
🧬 Genetic Heritage & Lineage
The magic of Jack Kush lies in its prestigious parentage. Jack Herer, the sativa-dominant legend named after the cannabis activist and author, brings cerebral stimulation, creativity, and uplifting energy to the table. Master Kush contributes its renowned indica qualities—physical relaxation, stress relief, and that signature earthy-sweet kushiness. This 50-70% sativa / 30-50% indica split creates a versatile hybrid that leans slightly toward the energizing side while maintaining enough body presence to keep you grounded. Some phenotypes trace their lineage through OG Kush instead of Master Kush, resulting in variations sometimes called "Jack OG" that emphasize the West Coast fuel-forward profile. Regardless of the exact lineage, you're experiencing a cross between cannabis aristocracy, bred specifically to balance mental clarity with physical comfort.
👃 Terpene Profile & Aromatics
What truly sets Jack Kush apart is its terpinolene-dominant profile (0.33%), a relatively rare terpene that creates a uniquely complex aromatic experience. Terpinolene brings herbaceous, floral, and subtly fruity notes that energize and uplift. Supporting this are significant amounts of phellandrene (0.29%), which adds minty, citrusy freshness, and caryophyllene (0.13%), contributing spicy, peppery undertones with potential anti-inflammatory benefits. You'll also find limonene (0.06%) for mood elevation, pinene (0.05%) for alertness and focus, and traces of myrcene, linalool, and eucalyptol rounding out the profile.
When you first encounter Jack Kush, the aroma greets you with sweet floral notes layered over citrus brightness—think lemon zest and grapefruit. There's an earthy, sage-like herbal quality that speaks to its kushiness, followed by diesel fuel accents and piney freshness. Some phenotypes express skunky undertones that add pungency and depth. The overall aromatic profile is sophisticated and multidimensional, evolving as the buds are broken apart to reveal sweeter, more resinous notes.
👅 Flavor Experience
The flavor journey of Jack Kush is equally impressive. On the inhale, you'll taste sweet citrus—particularly lemon and grapefruit—mixed with herbal sage and earthy undertones. The mid-palate brings out diesel fuel notes balanced by pine and subtle floral sweetness. Some users detect vanilla smoothness or spicy pepper accents, depending on the phenotype and consumption method. The exhale leaves a lingering sweet, earthy finish with hints of sage and citrus that coat your palate pleasantly. Vaporizing between 350-390°F emphasizes the sweeter, more floral notes, while smoking brings out the earthier, diesel-forward characteristics.
🎯 Effects & Experience
Jack Kush delivers a balanced, functional high that unfolds in distinct stages. Within 5-10 minutes of consumption, you'll notice the onset—a gentle cerebral lift that brings mental clarity, focus, and euphoria. Your thoughts become more organized yet creative, making this an excellent strain for artistic projects or engaging conversations. The terpinolene and limonene work synergistically to elevate your mood without causing racing thoughts or anxiety.
As the peak develops (15-45 minutes in), the indica genetics begin to express themselves through gentle body relaxation and physical comfort that doesn't lead to couch-lock. You'll feel energized yet calm, motivated yet relaxed—a sweet spot that's perfect for productivity or social activities. Many users report increased appetite and a pleasant body buzz that relieves tension without sedation.
The duration typically lasts 2-3 hours, with effects gradually tapering into a comfortable, clear-headed comedown. You won't feel foggy or depleted afterward, making Jack Kush suitable for daytime or early evening use. The intensity sits at a moderate level—present enough to be enjoyable and therapeutic, but manageable enough for those with lower tolerance or cannabis newcomers.
🎮 Use Cases & Activities
Jack Kush excels in scenarios requiring balanced mental and physical engagement. It's ideal for creative projects—writing, painting, music production—where you need both inspiration and focus. The strain shines during social activities, helping you feel conversational and engaged without excessive intoxication. It's excellent for stress relief after work, providing mental decompression while keeping you functional for evening plans. Many users enjoy Jack Kush for light physical activities like yoga, hiking, or cycling, where the body relaxation enhances movement without causing heaviness. It's also suitable for daytime use when you need pain or anxiety relief but can't afford to be sedated.
💚 Medical & Therapeutic Potential
Jack Kush offers significant therapeutic potential for various conditions. The balanced cannabinoid and terpene profile may help with stress and anxiety management, providing calming effects without excessive sedation. Patients report relief from depression, as the uplifting terpenes support mood elevation. The caryophyllene and other terpenes may contribute to pain relief and inflammation reduction, making it useful for chronic pain, arthritis, migraines, and muscle spasms. The appetite-stimulating effects may benefit those experiencing loss of appetite. Some users find it helpful for eye pressure and fatigue. The moderate THC levels make it accessible for medical users seeking therapeutic benefits without overwhelming psychoactivity.
👁️ Visual Characteristics
Jack Kush buds are visually striking, typically displaying deep forest green coloration with lime green highlights throughout. You'll notice vibrant orange or rust-colored pistils that weave through the flowers, creating beautiful contrast. The buds often show purple undertones in cooler growing conditions. Dense, resinous trichome coverage gives the flowers a frosty, crystalline appearance, indicating high cannabinoid content. The bud structure is medium-dense—not airy like pure sativas, but not rock-hard like heavy indicas—with a slightly tapered, spear-like shape inherited from Jack Herer. When properly cured, the buds are sticky to the touch and break apart to reveal lighter green interior coloring.
⚠️ Consumer Considerations
Jack Kush is suitable for a wide range of consumers, from cannabis newcomers to experienced enthusiasts. The moderate THC range (13-22%) allows you to find products that match your tolerance level—start with lower-THC batches if you're new to cannabis. The balanced effects make it versatile for various times of day, though most users prefer it for afternoon or early evening use. Common side effects include dry mouth and dry eyes (keep water and eye drops handy), with occasional dizziness or mild anxiety in sensitive individuals. Start with small doses and wait 15-20 minutes to assess effects before consuming more. This strain pairs beautifully with creative activities, social settings, or outdoor adventures where you want to feel present and engaged.
Research Methodology
How we compiled this strain profile
This strain profile was compiled from 7 published sources covering 'Jack Kush'. Our research pipeline cross-references these sources and reports how strongly they agree — see the confidence breakdown below.
Data Quality by Section
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Strain Highlights
Key insights at a glance
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