Harlequin
aka Har, Harlequin GDP, Harlequin Granddaddy Purple +2 more
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.
The Short Answer
What kind of high is Harlequin?
Myrcene-led and earthy on the palate, most often reported relaxed and picked for watching tv/movies in the morning.
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 →- Sedating
- Muscle relaxant
- Anti inflammatory
- Pinene Pine, fresh forest
- Caryophyllene Spicy, peppery, woody
Listed as reported — no measured order on file for this strain.
The effects reported most often across our research sources. Every body is different — set, setting and tolerance all move the result.
- Focused
- Uplifted
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 →- Woody
- Spicy
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
- Best Time morning
- Era 2007
- Rarity Common
Genetics Sativa-Dominant 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 →
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
Your guided read
6 chapters on Harlequin
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
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.
Effects Profile
Relaxed · Focused · Uplifted
Best enjoyed during morning
Energizing start to your day
Best For
Watching TV/Movies · Work · Nature Activities
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
Look, Aroma & Taste
Aroma & Flavor
Earthy · Tropical · Sweet
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
Myrcene leads · 8 terpenes mapped
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
Forest green · Olive green
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
Chemistry & Research
Medical Effects
10 reported therapeutic uses on file
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.
What Research Says
Peer-reviewed studies, terpene science & safety guidance
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.
Cannabinoids (THC & CBD)
THC 3-15% · Type II 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.
Both THC and CBD present (5-15% each) - Medical/wellness focused
Using It Well
Consumption Methods
Smoking · Vaping · Tinctures
Recommended Methods
Side Effects
Dry Mouth · Dry Eyes · +2 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
Colombian Gold × Thai · bred by Mr. Green
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
Awards & Recognition
2 awards & mentions
Competition Wins
The Full Story
Detailed Description
The long-form profile · ~2 min read
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
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
Learn more with AI
Open your assistant with a ready-made prompt about Harlequin.
- Ask ChatGPT Opens with the prompt filled in
- Ask Claude Opens with the prompt filled in
- Ask Gemini Copies the prompt to paste in
- Ask Grok Opens with the prompt filled in
- Ask Perplexity Opens with the prompt filled in
We copy the prompt to your clipboard as you go, so you can paste it if the assistant opens with an empty box. Answers come from the assistant, not from us — always double-check them against this page.
Suggest Edits
Spot something off about Harlequin? Pick a category to email us a correction — in-page submission is coming soon.
Strain Highlights
Key insights at a glance
Learn more with AI
Open your assistant with a ready-made prompt about Harlequin.
- Ask ChatGPT Opens with the prompt filled in
- Ask Claude Opens with the prompt filled in
- Ask Gemini Copies the prompt to paste in
- Ask Grok Opens with the prompt filled in
- Ask Perplexity Opens with the prompt filled in
We copy the prompt to your clipboard as you go, so you can paste it if the assistant opens with an empty box. Answers come from the assistant, not from us — always double-check them against this page.