Strain experience guide

M-39

Also known as Beaster, Quebec Gold, Beasters, M39, Blasters, Commercial, Maple, m 39

M-39 is a legendary Canadian indica-dominant hybrid (60/40) bred by Super Sativa Seeds Club from Northern Lights #5 and Skunk #1. The terpene profile (2. 17% total) features myrcene, caryophyllene, and pinene, creating earthy, woody, skunky aromas with pine and citrus notes. Perfect for evening use, M-39 may help with stress, anxiety, pain, and insomnia while stimulating appetite. Read more Show less

Quick Hits

What kind of high is M-39?

An indica-dominant hybrid reported as relaxed, euphoric and happy. Picked for watching tv/movies and sleep & bedtime at night. The profile features woody tobacco flavor, earthy diesel aroma and myrcene as the lead terpene.

High Family
Relaxing High
Deep Body Relaxation
Dominant Terpenes
Myrcene
Smells Earthy, musky, fruity
  • Caryophyllene Spicy, peppery, woody
  • Pinene Pine, fresh forest

Ordered by measured share — the exact percentages shift with every batch and cure.

How It Feels
Relaxed
  • Euphoric
  • Happy
Best For
Smells Like
Earthy diesel
  • Sweet
Tastes Like
Woody tobacco
  • Earthy
  • Sweet
  • Best Time Night
  • Era 1980
  • Rarity Uncommon

Genetics Indica-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

The memorable details

  1. Legendary Canadian strain recognized twice by High Times Magazine as top 10 all-time
  2. Myrcene-dominant terpene profile delivers deep relaxation with earthy, skunky, pine aromas
  3. Euphoric cerebral onset transitions into full-body sedation perfect for evening unwinding
  4. Strong appetite stimulation and sleep support make it ideal for nighttime therapeutic use
Explore the full profile Complete experience record Relaxed · Euphoric · Happy

Mind, body, and energy

Relaxed Euphoric Happy Uplifted Sleepy Hungry

Best enjoyed during night

Deep relaxation and sleep

Activities people choose it for

Therapeutic reports

Mental Effects

60 %
  • •
    Stress Relief

    Reduces stress and racing thoughts effectively

  • •
    Anxiety Relief

    Calms anxiety and promotes relaxation

  • •
    Depression Management

    Elevates mood and supports emotional balance

  • •
    Sleep Support

    Promotes restful sleep and reduces insomnia

Professor High showing Stress Relief and Pain Relief effects
Stress Relief Pain Relief

Professor High visualization

Body Effects

40 %
  • •
    Pain Management

    Reduces chronic pain and muscle tension

  • •
    Inflammation Reduction

    Decreases inflammation throughout the body

  • •
    Appetite Stimulation

    Increases appetite and supports nausea relief

  • •
    Muscle Relaxation

    Eases muscle aches and tension relief

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.

Dry Mouth
Dry Eyes
Drowsiness
Increased Appetite
Dizziness

These are commonly reported effects. Individual experiences may vary based on dosage, tolerance, and consumption method.

Keep listening Music neighborhood Follow M-39 into Relaxing High music

Sound neighborhood

Follow M-39 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 Earthy · Sweet · Diesel

Aroma and flavor

Aromas

Earthy
Sweet
Diesel

Flavors

Earthy
Sweet
Woody
Tobacco
Lemon

Terpene profile

Total Terpene Content: 2.07% (High)

Terpene Distribution

Terpene profile: Myrcene 0.8%, Caryophyllene 0.5%, Pinene 0.2%, Limonene 0.2%, Humulene 0.2%, Linalool 0.1% .

Myrcene Dominant

Flavor: Earthy, musky, fruity

Sedating Muscle relaxant Anti-inflammatory

Full Profile

Myrcene
0.75%
Caryophyllene
0.475%
Pinene
0.2475%
Limonene
0.225%
Humulene
0.225%
Linalool
0.15%

Appearance

Color Palette

deep forest green
purple undertones
dark emerald
fiery orange pistils
rust-colored hairs
amber trichomes

Texture

Dense, compact bud structure with heavy resin coverage and sticky-to-the-touch consistency characteristic of indica-dominant genetics

Crystal Density

high

Heavy frost coating

Batch context Complete cannabinoid record THC 12-25% · Type I chemovar

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.

Type I THC-Dominant

High THC (>15%), low CBD (<1%) - Most common recreational strains

Reported THC Range
12-25%
Professor High

03 · AI interpretation

Professor High interprets the pattern

The moment I exhale M-39, there's this immediate sense of mental lightness—like someone just lifted a weighted blanket off my thoughts. The first 15 minutes bring this gentle euphoria that makes everything feel a bit more interesting, a bit more vibrant. I'm experiencing enhanced creativity right now, noticing connections between ideas I wouldn't normally see.

But here's where the magic happens: around the 30-minute mark, this warm, tingling wave starts at my shoulders and cascades down through my entire body. It's not sudden—it's like slowly sinking into a warm bath. My muscles are releasing tension I didn't even know I was holding. The mental clarity from that initial uplift is still there, but now it's paired with this profound physical comfort that makes me want to settle into my favorite chair.

What's fascinating about this strain is how the myrcene-dominant terpene profile creates this sedative embrace without completely shutting down cognitive function. I can still think, still appreciate what I'm doing, but there's this undeniable gravitational pull toward relaxation. And yes, the appetite stimulation is real—suddenly every snack in my kitchen sounds absolutely incredible.

Read this as an interpretation of the profile—not clinical advice, a product rating, or a guarantee.

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Go deeper

The helpful detail

Introduction to M-39: A Canadian Cannabis Legend

M-39 stands as one of Canada's most iconic and historically significant cannabis strains, earning recognition in High Times Magazine's "Top 10 Canadian Strains of All Time" in both 2000 and 2013. This indica-dominant hybrid (60% indica / 40% sativa) has become synonymous with Canadian cannabis culture, known affectionately by nicknames like "Beaster," "Quebec Gold," and "Maple." Originating in the 1980s-1990s, M-39 represents a generation of cannabis breeding that prioritized reliable effects, hardy genetics, and consistent quality.

🧬 Genetic Heritage & Lineage

M-39 was crafted by the legendary Super Sativa Seeds Club through the union of two cannabis titans: Northern Lights #5 and Skunk #1. This genetic pairing brings together Northern Lights' renowned sedative properties and body-melting relaxation with Skunk #1's pungent aromatic profile and cerebral uplift. The result is a balanced hybrid that leans toward indica dominance while maintaining enough sativa influence to prevent complete couch-lock during the initial onset. This strain's lineage represents the golden era of 1980s breeding programs that sought to create robust, effect-driven varieties that could thrive in various growing conditions—particularly important for Canada's shorter growing season.

👃 Terpene Profile & Aromatics

The terpene profile of M-39 is led by Myrcene at 0.75%, the most abundant terpene known for its sedating, body-relaxing properties and earthy, musky base notes. Beta-Caryophyllene follows at 0.475%, contributing spicy, peppery notes while acting as a CB2 receptor agonist for potential anti-inflammatory effects. Alpha-Pinene (0.2475%) adds sharp, forest-fresh pine aromas that provide mental clarity and alertness, while Limonene (0.225%) introduces bright citrus top notes with mood-elevating potential. Humulene (0.225%) brings woody, hoppy undertones, and Linalool (0.15%) rounds out the profile with subtle floral, lavender-like notes that enhance relaxation.

The total terpene content of 2.17% creates a complex aromatic bouquet that opens with earthy, woody base notes reminiscent of forest floor and aged cedar. Sweet, skunky undertones emerge mid-nose, punctuated by sharp pine and diesel fuel accents that give way to subtle citrus and floral finishing notes. Some phenotypes reveal unexpected tobacco and herbal characteristics that add depth and sophistication to the profile.

👅 Flavor Experience

M-39 delivers a robust, multi-layered flavor journey from first inhale to final exhale. The initial taste strikes with earthy, woody flavors that coat the palate, immediately followed by sweet pine and herbal notes. Mid-palate, you'll encounter the skunky, diesel-like punch characteristic of its Skunk #1 heritage, balanced by lemony citrus brightness that cuts through the heavier earth tones. The exhale leaves a lingering tobacco-like aftertaste with subtle spicy, peppery notes that reflect the caryophyllene content. Some users detect faint nutty or coffee-like undertones that add complexity to the finish.

🎯 Effects & Experience

With THC levels ranging from 12-25% and minimal CBD (<1%), M-39 delivers a potent, indica-leaning experience that begins with a cerebral uplift. Within 5-10 minutes, you'll notice euphoric feelings washing over you, accompanied by enhanced mood and creative thoughts. This initial mental stimulation lasts 20-30 minutes before the indica genetics assert dominance, bringing waves of deep physical relaxation that spread from head to toe.

The peak effects (30-90 minutes) feature full-body sedation without complete immobilization, making you feel relaxed, happy, and content while maintaining enough mental clarity to engage in low-key activities. As the experience progresses (90+ minutes), expect increased sleepiness, strong appetite stimulation (the munchies), and a tingly, warm sensation throughout your body. The duration typically spans 2-4 hours, with lingering relaxation effects that may promote restful sleep.

🎮 Use Cases & Medical Potential

M-39 excels as an evening and nighttime strain perfect for unwinding after demanding days. The balanced onset makes it suitable for creative projects during the first hour, while the deepening relaxation supports meditation, yoga, reading, and watching movies. The strain's appetite-stimulating properties make it valuable for those dealing with nausea or loss of appetite, while the sedative effects may help with insomnia and sleep disturbances.

Medical users report M-39 may help manage chronic stress (intensity 5/5), anxiety (5/5), depression (4/5), and sleep disorders (5/5) on the mental health side. For physical wellness, it may assist with chronic pain (4/5), muscle tension (3/5), inflammation (3/5), and appetite loss (4/5). The high myrcene content contributes to the body-soothing properties, while caryophyllene's anti-inflammatory mechanisms provide additional therapeutic potential.

👁️ Visual Characteristics & Consumer Considerations

M-39 buds display dense, compact structure typical of indica genetics, featuring deep forest green primary coloration with purple undertones in cooler-grown phenotypes. Fiery orange to rust-colored pistils curl throughout the buds, contrasting beautifully against the green backdrop. High crystal density gives the buds a frosty, resinous appearance, with amber trichomes coating even the inner layers.

Beginners should start with low doses (1-2 inhalations) due to the potent sedative effects. The strain's historical association with commercial growing means quality can vary—seek reputable sources for the best experience. Common side effects include dry mouth and dry eyes (keep water and eye drops handy). This legendary Canadian strain continues to deliver reliable, enjoyable effects that have stood the test of time.

Practical guide How people use it Smoking · Vaping · Tinctures

Recommended Methods

Smoking
Vaping
Tinctures
Where it comes from Origins and lineage Northern Lights #5 × Skunk #1 · bred by Super Sativa Seeds Club

M-39 is a hybrid strain resulting from the cross of Northern Lights #5 and Skunk #1, originating from the 1980s-1990s. It has become one of the most recognized Canadian strains, with a genetic profile that balances indica and sativa characteristics.

Origin Timeline

First cultivated in 1980

Breeder

Super Sativa Seeds Club

Seed Bank

Quebec Cannabis Seeds

On the record Awards and recognition 4 awards & mentions
Watch Reviews and videos Community video reviews

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Keep exploring Similar strains 7 nearby strains Northern Lights · Granddaddy Purple · Ice Cream Cake + 4 more Related 4 Indica 4 Terpene 4

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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
20
Sourced sections
9
Claims under review
93
Profile updated
Aug 31, 2026
Research Edition

Current profile edition

Updated August 31, 2026 · 9 profile areas with section-level sourcing
Researched profile

This edition records This Is Why I'm High’s synthesis of published information about M-39. It describes source-supported patterns and uncertainty; it does not certify genetics, potency, safety, or any product batch.

Profile sources
20
Research evidence confidence
63%
Edition date
August 31, 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 14 sources
  • Lineage 13 sources
  • Cannabinoids 11 sources
  • Terpenes 3 sources
  • Reported effects 13 sources
  • Aromas 12 sources
  • Flavors 13 sources
  • Reported medical uses 10 sources
  • Awards 5 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 Peer-reviewed studies, terpene science & safety guidance

What does the research say about M-39?

M-39 is a indica cannabis strain containing up to 25.0% THC, with a terpene profile dominated by Myrcene and Caryophyllene. 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.

Power-user detail Open sources and methodology 20 linked sources with section-level provenance

Research Methodology

How we compiled this strain profile

63%
Data Confidence

This strain profile was compiled from 20 published sources covering 'M-39'. Our research pipeline cross-references these sources and reports how strongly they agree — see the confidence breakdown below.

Data Quality by Section

Terpenes Medium (3 sources)
Effects Low (13 sources)
Lineage Low (13 sources)
Medical Low (10 sources)
Aromas Low (12 sources)
Cannabinoids Low (11 sources)
Last updated: August 31, 2026

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