Strain experience guide
Harlequin
Also known as Har, Harlequin GDP, Harlequin Granddaddy Purple, HGDP, Harlequin CBD
Harlequin is a sativa-dominant hybrid (75/25) prized for its rare balance of CBD and THC. Bred from Colombian Gold, Thai, Swiss Sativa, and Nepali Indica landraces, it delivers relaxed, focused, and uplifted effects without heavy sedation. Earthy, tropical, and citrus flavors pair with a functional, clear-headed high, making Harlequin a favorite for daytime relief, creative work, and social activities among both medical and recreational users seeking calm without the couch-lock. Read more Show less
Quick Hits
What kind of high is Harlequin?
A sativa-dominant hybrid reported as relaxed, focused and uplifted. Picked for watching tv/movies and work in the morning. The profile features earthy flavor, earthy tropical aroma and myrcene as the lead terpene.
Terpenes help give cannabis its aroma. Compare citrus, pine and earthy notes to find what appeals to you. The profile offers clues, not a guaranteed high.
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.
Research associations
- Sedating
- Muscle relaxant
- Anti inflammatory
General terpene associations, not effects confirmed for this strain. Evidence varies.
- Pinene Pine, fresh forest
- Caryophyllene Spicy, peppery, woody
Listed as reported — no measured order on file for this strain.
Reported effects, at a glance. Dose, tolerance and setting can change the experience.
- Focused
- Uplifted
Ideas for your next session, drawn from strain reports. Find what fits your plans.
See the full list →What to look for when you open the jar, based on descriptions of this strain.
See the full profile →- Sweet
The reported taste, from the first impression to the finish. The batch and how you consume it can change what comes through.
See the full profile →- Woody
- Spicy
- Best Time Morning
- Era 2007
- Rarity Common
Genetics Sativa-Dominant Hybrid A guide to lineage, not a reliable predictor of the high.
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 Reported: dry mouth and dry eyes. Responses vary — start low, go slow. Review safety →
Worth knowing
The details that shape the experience
This strain has its own song — hit play, read along, and chill out.
Harlequin Soundtrack
AI-generated for this strain
Harlequin Soundtrack
Verse
Chorus
Verse
Chorus
Outro
The memorable details
- Rare high-CBD sativa hybrid offering clear-headed relief without heavy sedation
- Bred from Colombian Gold, Thai, Swiss Sativa, and Nepali Indica landraces
- Earthy, tropical, and citrus flavors with a Myrcene-Pinene-Caryophyllene terpene backbone
- Ideal for daytime pain and anxiety relief that keeps you functional and focused
Explore the full profile Complete experience record
Mind, body, and energy
Best enjoyed during morning
Energizing start to your day
Activities people choose it for
Effect Sources
- 1 Harlequin Weed Strain Information leafly.com(opens in new tab)
- 2 Harlequin Marijuana Strain Information & Reviews allbud.com(opens in new tab)
- 3 Harlequin Strain - Strainpedia strainpedia.com(opens in new tab)
- 4 Harlequin Strain: CBD Effects, Terpenes & Growing Guide | ZenWeedGuide zenweedguide.com(opens in new tab)
- 5 Harlequin Cannabis Strain Information and Review ilovegrowingmarijuana.com(opens in new tab)
- 6 Harlequin Cannabis Strain — Lineage, Terpenes & Effects zenzest.com(opens in new tab)
- 7 Harlequin Cannabis Strain: A Comprehensive Guide planet13.com(opens in new tab)
- 8 Harlequin CBD Strain Guide: Effects, Benefits & Where to Buy maryjanesbakeryco.com(opens in new tab)
- 9 Harlequin — Strain Info, Effects & Seeds | StrainElite strainelite.com(opens in new tab)
- 10 Harlequin Strain — Effects, THC, Terpenes | StrainCompass straincompass.com(opens in new tab)
- 11 Harlequin Strain - Growing Tips and Medical Effects | Marijuana Guides marijuana-guides.com(opens in new tab)
- 12 Harlequin (Clone Only Strains) :: Cannabis Strain Info :: SeedFinder.eu seedfinder.eu(opens in new tab)
- 13 Harlequin Strain: Grow Tips & Benefits blimburnseeds.com(opens in new tab)
- 14 Harlequin Strain | Cannabismarketcap cannabismarketcap.io(opens in new tab)
- 15 Harlequin Sativa: A Guide to This CBD Rich Strain gasdank.com(opens in new tab)
- 16 Harlequin Cannabis Strain Information & Review – Bud Billions – Your Gateway to Cannabis Insights budbillion.com(opens in new tab)
- 17 Harlequin UK — Effects, Price & Where to Buy | LeafMe leafme.co.uk(opens in new tab)
- 18 Harlequin Strain Intro & Top 3 Alternatives secretnature.com(opens in new tab)
- 19 Cannabis Strain Harlequin Sativa Balanced THC/CBD strainlists.com(opens in new tab)
- 20 Spotlight On: Harlequin CBD Seeds - Old School Breeders Association oldschoolba.com(opens in new tab)
- 21 Harlequin, Blimburn Seeds, THC 3-6%, 8-10 weeks | PhenoDB phenodb.eu(opens in new tab)
- 22 thcfarmer.com thcfarmer.com(opens in new tab)
- 23 Buy Harlequin 7g by Simply Bare Organics mendomedical.ca(opens in new tab)
- 24 Harlequin GDP: An All-Day Strain With Incredible Effects okccraft.com(opens in new tab)
- 25 8 Tips for Growing Harlequin Marijuana [Growers Guide] marijuanabreak.com(opens in new tab)
25 verified sources
Therapeutic reports
Medical Effect Sources
- 1 Harlequin Weed Strain Information leafly.com(opens in new tab)
- 2 Harlequin Marijuana Strain Information & Reviews allbud.com(opens in new tab)
- 3 Harlequin Strain: CBD Effects, Terpenes & Growing Guide | ZenWeedGuide zenweedguide.com(opens in new tab)
- 4 Harlequin Cannabis Strain Information and Review ilovegrowingmarijuana.com(opens in new tab)
- 5 Harlequin Cannabis Strain: A Comprehensive Guide planet13.com(opens in new tab)
- 6 Harlequin — Strain Info, Effects & Seeds | StrainElite strainelite.com(opens in new tab)
- 7 Harlequin Strain — Effects, THC, Terpenes | StrainCompass straincompass.com(opens in new tab)
- 8 Harlequin Strain - Growing Tips and Medical Effects | Marijuana Guides marijuana-guides.com(opens in new tab)
- 9 Harlequin Strain: Grow Tips & Benefits blimburnseeds.com(opens in new tab)
- 10 Harlequin Strain | Cannabismarketcap cannabismarketcap.io(opens in new tab)
- 11 Harlequin Cannabis Strain Information & Review – Bud Billions – Your Gateway to Cannabis Insights budbillion.com(opens in new tab)
- 12 Harlequin UK — Effects, Price & Where to Buy | LeafMe leafme.co.uk(opens in new tab)
- 13 Harlequin Strain Intro & Top 3 Alternatives secretnature.com(opens in new tab)
- 14 Cannabis Strain Harlequin Sativa Balanced THC/CBD strainlists.com(opens in new tab)
- 15 thcfarmer.com thcfarmer.com(opens in new tab)
- 16 Harlequin GDP: An All-Day Strain With Incredible Effects okccraft.com(opens in new tab)
- 17 8 Tips for Growing Harlequin Marijuana [Growers Guide] marijuanabreak.com(opens in new tab)
17 verified sources
Mental Effects
- •Anxiety Relief
Reduces anxiety and promotes calm focus
- •Stress Management
Alleviates stress without heavy sedation
- •Depression Support
Mood elevation and emotional balance support
- •PTSD Relief
Helps manage post-traumatic stress symptoms
Professor High visualization
Body Effects
- •Pain Management
Reduces chronic pain and muscle tension
- •Inflammation Reduction
Decreases inflammatory response throughout body
- •Headache Relief
Alleviates migraines and tension headaches
- •Muscle Spasm Reduction
Eases muscle spasms and joint pain
- •Nausea Management
Reduces nausea and improves appetite
- •Sleep Support
Mild sedative effects aid sleep disorders
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.
Side effects and safer use
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.
Keep listening Music neighborhood
Sound neighborhood
Follow Harlequin into Relaxing High music.
TIWIH classifies this strain within the Relaxing High chemistry pattern. Separately, our editorial music map associates the same family with these sounds. It is a creative bridge—not a prediction or artist endorsement.
Open the jar
Aroma, flavor, and chemistry
Look closer Full sensory specimen
Aroma and flavor
Aroma & Flavor Sources
- 1 Harlequin Weed Strain Information leafly.com(opens in new tab)
- 2 Harlequin Marijuana Strain Information & Reviews allbud.com(opens in new tab)
- 3 Harlequin Strain - Strainpedia strainpedia.com(opens in new tab)
- 4 Harlequin Strain: CBD Effects, Terpenes & Growing Guide | ZenWeedGuide zenweedguide.com(opens in new tab)
- 5 Harlequin Cannabis Strain Information and Review ilovegrowingmarijuana.com(opens in new tab)
- 6 Harlequin Cannabis Strain: A Comprehensive Guide planet13.com(opens in new tab)
- 7 Harlequin CBD Strain Guide: Effects, Benefits & Where to Buy maryjanesbakeryco.com(opens in new tab)
- 8 Harlequin — Strain Info, Effects & Seeds | StrainElite strainelite.com(opens in new tab)
- 9 Harlequin Strain — Effects, THC, Terpenes | StrainCompass straincompass.com(opens in new tab)
- 10 Harlequin Strain - Growing Tips and Medical Effects | Marijuana Guides marijuana-guides.com(opens in new tab)
- 11 Harlequin (Clone Only Strains) :: Cannabis Strain Info :: SeedFinder.eu seedfinder.eu(opens in new tab)
- 12 Harlequin Strain: Grow Tips & Benefits blimburnseeds.com(opens in new tab)
- 13 Harlequin Strain | Cannabismarketcap cannabismarketcap.io(opens in new tab)
- 14 Harlequin Sativa: A Guide to This CBD Rich Strain gasdank.com(opens in new tab)
- 15 Harlequin Cannabis Strain Information & Review – Bud Billions – Your Gateway to Cannabis Insights budbillion.com(opens in new tab)
- 16 Harlequin Strain Intro & Top 3 Alternatives secretnature.com(opens in new tab)
- 17 Cannabis Strain Harlequin Sativa Balanced THC/CBD strainlists.com(opens in new tab)
- 18 Spotlight On: Harlequin CBD Seeds - Old School Breeders Association oldschoolba.com(opens in new tab)
- 19 thcfarmer.com thcfarmer.com(opens in new tab)
- 20 Buy Harlequin 7g by Simply Bare Organics mendomedical.ca(opens in new tab)
- 21 Harlequin GDP: An All-Day Strain With Incredible Effects okccraft.com(opens in new tab)
- 22 8 Tips for Growing Harlequin Marijuana [Growers Guide] marijuanabreak.com(opens in new tab)
- 23 Cannatonic x Harlequin CBD Flower tweedlefarms.com(opens in new tab)
23 verified sources
Aromas
Flavors
Terpene profile
Terpene Sources
- 1 Harlequin Weed Strain Information leafly.com(opens in new tab)
- 2 Harlequin Strain - Strainpedia strainpedia.com(opens in new tab)
- 3 Harlequin Strain: CBD Effects, Terpenes & Growing Guide | ZenWeedGuide zenweedguide.com(opens in new tab)
- 4 Harlequin Cannabis Strain Information and Review ilovegrowingmarijuana.com(opens in new tab)
- 5 Harlequin Cannabis Strain — Lineage, Terpenes & Effects zenzest.com(opens in new tab)
- 6 Harlequin CBD Strain Guide: Effects, Benefits & Where to Buy maryjanesbakeryco.com(opens in new tab)
- 7 Harlequin — Strain Info, Effects & Seeds | StrainElite strainelite.com(opens in new tab)
- 8 Harlequin Strain — Effects, THC, Terpenes | StrainCompass straincompass.com(opens in new tab)
- 9 Harlequin (Clone Only Strains) :: Cannabis Strain Info :: SeedFinder.eu seedfinder.eu(opens in new tab)
- 10 Harlequin Strain: Grow Tips & Benefits blimburnseeds.com(opens in new tab)
- 11 Harlequin Strain | Cannabismarketcap cannabismarketcap.io(opens in new tab)
- 12 Harlequin Strain Intro & Top 3 Alternatives secretnature.com(opens in new tab)
- 13 Cannabis Strain Harlequin Sativa Balanced THC/CBD strainlists.com(opens in new tab)
- 14 Harlequin, Blimburn Seeds, THC 3-6%, 8-10 weeks | PhenoDB phenodb.eu(opens in new tab)
- 15 Buy Harlequin 7g by Simply Bare Organics mendomedical.ca(opens in new tab)
- 16 Harlequin GDP: An All-Day Strain With Incredible Effects okccraft.com(opens in new tab)
16 verified sources
Secondary Terpenes
Supporting Terpenes
Appearance
Color Palette
Texture
Buds tend to be moderately dense with a fluffy sativa-leaning structure, coated in a frosty layer of trichomes that reflect the strain's high cannabinoid content.
Crystal Density
high
Heavy frost coating
Batch context Complete cannabinoid record
There’s more to a strain than THC%.
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.
Both THC and CBD present (5-15% each) - Medical/wellness focused
03 · AI interpretation
Professor High interprets the pattern
Alright, I just packed a bowl of Harlequin and I can already tell this isn't your typical head-spin sativa. The onset creeps in gently — no rushing anxious edge, just a soft wave of calm alertness washing over my forehead. My thoughts stay remarkably clear, almost like someone turned down the static without dimming the lights. That's the CBD talking — it's rounding off the sharper corners of the THC.
Physically, there's a light, pleasant heaviness settling into my shoulders, like gravity got 10% stronger in a good way, but I'm nowhere near couch-locked. I could genuinely go water my plants or knock out some emails right now. The earthy, tropical mango flavor lingers pleasantly on my exhale, and I keep noticing how functional I feel — uplifted, mildly euphoric, but grounded. This is the kind of high that makes you appreciate a slow morning without ever losing your train of thought.
Read this as an interpretation of the profile—not clinical advice, a product rating, or a guarantee.
Learn more with AI
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Go deeper
The helpful detail
Meet Harlequin: The CBD Pioneer
Few strains changed the conversation around cannabis quite like Harlequin. Bred in the mid-to-late 2000s by Mr. Green, this sativa-dominant hybrid was designed with a singular purpose: deliver meaningful CBD content without abandoning the clear-headed, functional experience sativa lovers crave. With a 75% Sativa / 25% Indica composition, Harlequin helped usher in the modern era of high-CBD medical cannabis, proving that relief and clarity could coexist in the same bud.
🧬 Genetic Heritage & Lineage
Harlequin's genetics read like a world tour of landrace cannabis:
- Colombian Gold — a legendary tropical sativa landrace contributing energetic, uplifting qualities
- Thai — a classic Southeast Asian sativa known for its clear, cerebral high
- Swiss Sativa — landrace genetics adding structure and resilience
- Nepali Indica — the lone indica influence, tempering the sativa intensity with grounding body effects
This four-way landrace cross was developed specifically as a medical strain, and it shows: Harlequin is one of the rare strains where CBD content can meet or exceed THC, with reported ranges spanning roughly 3-15% THC and 4-18% CBD. This makes it a Type II chemovar — a balanced cannabinoid profile that opens the door to therapeutic use without heavy intoxication.
👃 Terpene Profile & Aromatics
Harlequin's aromatic signature is anchored by Myrcene, the dominant terpene most consistently reported across sources. Myrcene brings an earthy, herbal backbone and is associated with the strain's gentle body-calming quality. Supporting terpenes round out a genuinely complex nose:
- Pinene — sharp, resinous pine notes that support mental clarity and alertness
- Caryophyllene — a peppery, spicy edge that also interacts with the body's CB2 receptors for potential comfort support
- Limonene — bright citrus lift contributing to the mood-elevating character
- Humulene — subtle woody, hoppy undertones
- Terpinolene and Ocimene — fresher, sweeter top notes that add complexity to the tropical aroma
- Bisabolol — a soft floral, chamomile-like whisper beneath the earthier tones
Together, these terpenes create an aroma profile that's simultaneously earthy, tropical, sweet, piney, woody, citrusy, herbal, and touched with mango — a layered scent that shifts depending on the phenotype and cure.
👅 Flavor Experience
The smoke or vapor delivers an experience that mirrors the aroma closely. Expect an earthy, woody foundation on the inhale, giving way to spicy and herbal mid-notes, then finishing on a sweet, tropical, citrus, and fruity exhale. It's a flavor journey that feels more like sipping an herbal tea infused with tropical fruit than a typical
Practical guide How people use it
Recommended Methods
Where it comes from Origins and lineage
Lineage Sources
- 1 Harlequin Weed Strain Information leafly.com(opens in new tab)
- 2 Harlequin Marijuana Strain Information & Reviews allbud.com(opens in new tab)
- 3 Harlequin Strain - Strainpedia strainpedia.com(opens in new tab)
- 4 Harlequin Strain: CBD Effects, Terpenes & Growing Guide | ZenWeedGuide zenweedguide.com(opens in new tab)
- 5 Harlequin Cannabis Strain Information and Review ilovegrowingmarijuana.com(opens in new tab)
- 6 Harlequin Cannabis Strain — Lineage, Terpenes & Effects zenzest.com(opens in new tab)
- 7 Harlequin Cannabis Strain: A Comprehensive Guide planet13.com(opens in new tab)
- 8 Harlequin CBD Strain Guide: Effects, Benefits & Where to Buy maryjanesbakeryco.com(opens in new tab)
- 9 Harlequin — Strain Info, Effects & Seeds | StrainElite strainelite.com(opens in new tab)
- 10 Harlequin Strain — Effects, THC, Terpenes | StrainCompass straincompass.com(opens in new tab)
- 11 Harlequin Strain - Growing Tips and Medical Effects | Marijuana Guides marijuana-guides.com(opens in new tab)
- 12 Harlequin (Colombian Gold × Thai) — Strain & Lineage · CannaForge thecannaforge.com(opens in new tab)
- 13 Harlequin (Clone Only Strains) :: Cannabis Strain Info :: SeedFinder.eu seedfinder.eu(opens in new tab)
- 14 Harlequin Strain: Grow Tips & Benefits blimburnseeds.com(opens in new tab)
- 15 Harlequin Strain | Cannabismarketcap cannabismarketcap.io(opens in new tab)
- 16 Harlequin Sativa: A Guide to This CBD Rich Strain gasdank.com(opens in new tab)
- 17 Harlequin Cannabis Strain Information & Review – Bud Billions – Your Gateway to Cannabis Insights budbillion.com(opens in new tab)
- 18 Harlequin Strain Intro & Top 3 Alternatives secretnature.com(opens in new tab)
- 19 Cannabis Strain Harlequin Sativa Balanced THC/CBD strainlists.com(opens in new tab)
- 20 Spotlight On: Harlequin CBD Seeds - Old School Breeders Association oldschoolba.com(opens in new tab)
- 21 Harlequin, Blimburn Seeds, THC 3-6%, 8-10 weeks | PhenoDB phenodb.eu(opens in new tab)
- 22 thcfarmer.com thcfarmer.com(opens in new tab)
- 23 Buy Harlequin 7g by Simply Bare Organics mendomedical.ca(opens in new tab)
- 24 Harlequin GDP: An All-Day Strain With Incredible Effects okccraft.com(opens in new tab)
- 25 8 Tips for Growing Harlequin Marijuana [Growers Guide] marijuanabreak.com(opens in new tab)
- 26 Cannatonic x Harlequin CBD Flower tweedlefarms.com(opens in new tab)
26 verified sources
A sativa-dominant hybrid combining Colombian Gold landrace with Thai sativa, Swiss landrace sativas, and Nepali indica genetics. Developed as a medical strain known for its high CBD-to-THC ratio.
Genetics
Origin Timeline
First cultivated in 2007
Breeder
Mr. Green
Seed Bank
ILGM, Blimburn Seeds, Barney's Farm, Seed Supreme
On the record Awards and recognition
Competition Wins
Watch Reviews and videos
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Evidence and limits
Research notes
This profile assembles public facts in original language, links its supporting sources, and keeps gaps or disagreements visible. It is research provenance—not product or lab certification.
- Linked sources
- 31
- Sourced sections
- 9
- Claims under review
- 110
- Profile updated
- Sep 14, 2026
Research Edition Current profile edition
Updated September 14, 2026 · 9 profile areas with section-level sourcing Featured research profile
This edition records This Is Why I'm High’s synthesis of published information about Harlequin. It describes source-supported patterns and uncertainty; it does not certify genetics, potency, safety, or any product batch.
- Profile sources
- 31
- Research evidence confidence
- 71%
- Edition date
- September 14, 2026
Evidence confidence summarizes source coverage and consistency for this profile synthesis. It is not a product rating, potency score, or guarantee about any batch.
Source coverage in this edition
- Classification 25 sources
- Lineage 26 sources
- Cannabinoids 22 sources
- Terpenes 16 sources
- Reported effects 25 sources
- Aromas 23 sources
- Flavors 21 sources
- Reported medical uses 17 sources
- Awards 2 sources
History tracking is active
Material changes are recorded as new editions using factual categories and source metadata. Source article prose and reviews are not copied into the history.
Research context What published research says
What does the research say about Harlequin?
Harlequin is a sativa cannabis strain containing up to 15.0% THC, with a terpene profile dominated by Myrcene and Pinene. 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.
Power-user detail Open sources and methodology
Research Methodology
How we compiled this strain profile
This strain profile was compiled from 31 published sources covering 'Harlequin'. 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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Flag a name, lineage, source, image, or chemistry issue for private editorial review.