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.

High Family
Relaxing High
Deep Body Relaxation
⚖️ Balanced
Dominant Terpenes
Myrcene
Smells Earthy, musky, fruity
  • Sedating
  • Muscle relaxant
  • Anti inflammatory
  • Pinene Pine, fresh forest
  • Caryophyllene Spicy, peppery, woody

Listed as reported — no measured order on file for this strain.

How It Feels
Relaxed
  • Focused
  • Uplifted
Best For
Tastes Like
Earthy
  • Woody
  • Spicy
Smells Like
Earthy tropical
  • 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

Reggae84 BPMG major
0:002:57

Verse

Chorus

Verse

Chorus

Outro

Strain Highlights

Key insights at a glance

1
Rare high-CBD sativa hybrid offering clear-headed relief without heavy sedation
2
Bred from Colombian Gold, Thai, Swiss Sativa, and Nepali Indica landraces
3
Earthy, tropical, and citrus flavors with a Myrcene-Pinene-Caryophyllene terpene backbone
4
Ideal for daytime pain and anxiety relief that keeps you functional and focused

The Experience

Professor High Avatar

Professor High Says...

In-depth strain breakdown from Professor High, our AI cannabis expert

4.4 / 5 Rated 4.4 out of 5 by Professor High

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.

Sativa-Dominant Hybrid
Myrcene Forward
morning Use

Effects Profile

Relaxed · Focused · Uplifted
Relaxed Focused Uplifted

Best enjoyed during morning

Energizing start to your day

Best For

Watching TV/Movies · Work · Nature Activities

Look, Aroma & Taste

Aroma & Flavor

Earthy · Tropical · Sweet

Aromas

Earthy
Tropical
Sweet

Flavors

Earthy
Woody
Spicy
Sweet

Terpene Profile

Myrcene leads · 8 terpenes mapped
Unverified

Appearance

Forest green · Olive green

Color Palette

forest green
olive green
light green
amber trichomes
orange pistils
pale gold hues

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

Mental Effects

45 %
  • 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

55 %
  • 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.

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.

Type II Balanced

Both THC and CBD present (5-15% each) - Medical/wellness focused

Reported THC Range
3-15%

Using It Well

Consumption Methods

Smoking · Vaping · Tinctures

Recommended Methods

Smoking
Vaping
Tinctures
Topicals

Side Effects

Dry Mouth · Dry Eyes · +2 more

Side effects vary by individual. Start low, go slow. Consult a healthcare professional with concerns.

Dry Mouth
Dry Eyes
Anxiety in Sensitive Users
Dizziness

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

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.

Origin Timeline

First cultivated in 2007

Breeder

Mr. Green

Seed Bank

ILGM, Blimburn Seeds, Barney's Farm, Seed Supreme

Awards & Recognition

2 awards & mentions

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

71%
Data Confidence

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

Terpenes High (16 sources)
Effects Low (25 sources)
Lineage Low (26 sources)
Medical Low (17 sources)
Aromas Low (23 sources)
Cannabinoids Low (22 sources)
Last updated: August 14, 2026

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