Sirius Black

aka Serious Black, Sirius Black OG, SB +1 more

Sirius Black is a potent indica-dominant hybrid (70/30) from Oregon Breeders Group that shines brightest in the evening hours. With THC levels reaching up to 26% and a myrcene-rich terpene profile, this strain delivers powerful relaxation paired with euphoric mental uplift. The flavor experience is dominated by sweet grape and berry notes backed by earthy, woody undertones. Ideal for stress relief, pain management, and preparing for deep sleep, Sirius Black offers therapeutic benefits wrapped in a delicious, visually stunning package with dense purple-tinged buds frosted in crystalline trichomes.

The Short Answer

What kind of high is Sirius Black?

Myrcene-led and sweet-berry on the palate, most often reported relaxed and picked for sleep & bedtime at night.

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
Entourage High
Full Entourage Effect
🔥 THC-Dominant
Dominant Terpenes
Myrcene
Smells Earthy, musky, fruity
  • Sedating
  • Muscle relaxant
  • Anti inflammatory
  • Limonene Citrus, lemon, orange
  • Caryophyllene Spicy, peppery, woody

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

How It Feels
Relaxed
  • Euphoric
  • Happy
Best For
Tastes Like
Sweet berry
  • Earthy
  • Grape
Smells Like
Sweet berry
  • Earthy
  • Grape

Same notes reported for taste

  • Best Time night
  • Era 2017
  • Rarity Common

Genetics Indica-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 →

Strain Highlights

Key insights at a glance

1
Potent indica-dominant hybrid with 15-26% THC delivering deep relaxation and euphoric uplift
2
Sweet grape and berry flavors backed by earthy undertones from myrcene-rich terpene profile
3
Stunning purple-tinged buds coated in crystalline trichomes with fiery orange pistils
4
Excellent for evening stress relief, pain management, insomnia, and creative contemplation

The Experience

Professor High Avatar

Professor High Says...

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

4.3 / 5 Rated 4.3 out of 5 by Professor High

Settles back into chair with a satisfied grin

Okay, so I just finished a bowl of Sirius Black and... whoa... this is like being wrapped in the universe's coziest blanket while simultaneously having your mind gently elevated to a place of pure contentment. The onset is beautifully deceptive—you get this initial burst of euphoric clarity that makes everything seem a bit brighter, a bit more interesting. I'm finding myself fascinated by the patterns in my notebook, thinking about connections between concepts I'd never considered before.

But here's where it gets really interesting: about fifteen minutes in, this profound wave of physical relaxation starts rolling through my body like a slow-motion tidal wave of comfort. My shoulders, which I didn't even realize were tense, just... release. It's not sedating in a heavy, overwhelming way—it's more like your body finally gets permission to just be without all that background tension we carry around.

The mental state is particularly fascinating from a neurochemistry perspective. That myrcene-dominant profile is clearly working its magic on my GABA receptors, creating this peaceful, almost meditative headspace. Yet there's enough limonene and sativa genetics in there to keep things mentally engaging. I'm relaxed but not foggy—more like comfortably contemplative. Perfect for those deep evening thoughts about the nature of consciousness, the universe, and why grape flavors taste so impossibly good right now. Takes another appreciative puff

Indica-Dominant Hybrid
Myrcene Forward
night Use

Effects Profile

Relaxed · Euphoric · Happy
Relaxed Euphoric Happy Uplifted Creative

Best enjoyed during night

Deep relaxation and sleep

Best For

Sleep & Bedtime · Stress Relief · Relaxing

Look, Aroma & Taste

Aroma & Flavor

Sweet · Berry · Earthy

Aromas

Sweet
Berry
Earthy
Grape
Fruity

Flavors

Sweet
Berry
Earthy
Grape
Fruity

Terpene Profile

Myrcene leads · 12 terpenes mapped

Appearance

Deep forest green · Rich purple undertones

Color Palette

deep forest green
rich purple undertones
violet accents
fiery orange pistils
amber trichomes
rust-colored hairs

Texture

Dense, chunky indica-style buds with substantial weight and compact structure, blanketed in thick crystalline resin that gives the darker foliage an almost silvery, frosted appearance

Crystal Density

very high

Exceptional crystal coverage

Chemistry & Research

Medical Effects

8 reported therapeutic uses on file

Mental Effects

65 %
  • Stress Relief

    Reduces stress and promotes mental calm

  • Anxiety Relief

    Alleviates anxiety symptoms and nervous tension

  • Depression Support

    Helps elevate mood and combat depressive symptoms

  • Mood Enhancement

    Promotes euphoria and uplifted emotional state

Professor High visualization

Body Effects

35 %
  • Pain Management

    Reduces chronic pain and general discomfort

  • Sleep Support

    Promotes restful sleep and combats insomnia

  • Muscle Relaxation

    Relieves muscle tension and spasms

  • Appetite Stimulation

    Increases appetite and helps with appetite loss

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 Sirius Black?

Sirius Black is a indica cannabis strain containing up to 26.0% THC, with a terpene profile dominated by Myrcene and Limonene. 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 15-26% · 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.

Type I THC-Dominant

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

Reported THC Range
15-26%

Using It Well

Consumption Methods

Vaping · Smoking · Edibles

Recommended Methods

Vaping
Smoking
Edibles
Concentrates

Side Effects

Dry Mouth · Dry Eyes · +3 more

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

Dry Mouth
Dry Eyes
Drowsiness
Couch-Lock
Dizziness

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

Where It Comes From

Lineage & History

Black Cherry × Sensi Star · bred by Oregon Breeders Group

Indica-dominant hybrid with genetic contributions from Black Cherry, Sensi Star, Black Domina, Jillybean, Purple Urkle, and Granddaddy Purple lineages

Genetics

Black Cherry × Sensi Star

Origin Timeline

First cultivated in 2017

Breeder

Oregon Breeders Group

Seed Bank

Growers Choice Seeds

The Full Story

Detailed Description

The long-form profile · ~4 min read

The Mystique of Sirius Black

Named after the brightest star in the night sky—and perhaps the beloved Harry Potter character—Sirius Black is an indica-dominant hybrid that lives up to its celestial moniker. This strain has earned a dedicated following among cannabis connoisseurs for its potent relaxation properties, rich grape and berry flavors, and stunning visual presentation. Created by the Oregon Breeders Group, Sirius Black represents a masterful blend of genetics that delivers both therapeutic relief and deeply satisfying recreational effects. With THC levels ranging from 15-26% and a complex terpene profile led by myrcene, this strain offers a powerful yet balanced experience perfect for evening unwinding.

🧬 Genetic Heritage & Lineage

The lineage of Sirius Black remains somewhat shrouded in mystery, adding to its allure. While the Oregon Breeders Group has kept some parent genetics proprietary, sources suggest connections to legendary purple strains including Purple Urkle and Granddaddy Purple, as well as Black Cherry, Sensi Star, Black Domina, and Jillybean. This diverse genetic pool explains the strain's complex effects profile—combining deep physical relaxation with surprising creative energy. The strain emerged from the Pacific Northwest breeding scene around the 1980s-2010s era, representing decades of careful selection for potency, flavor, and visual appeal. This indica-dominant hybrid typically expresses a 70% indica / 30% sativa composition, though some phenotypes lean even more heavily toward indica characteristics.

👃 Terpene Profile & Aromatics

Myrcene dominates Sirius Black's terpene profile, contributing to its deeply sedating body effects and earthy base notes. This sedating terpene works synergistically with limonene (uplifting citrus notes), caryophyllene (spicy, peppery undertones with anti-inflammatory properties), linalool (calming floral aromatics), and pinene (sharp, forest-fresh alertness). The aromatic experience is truly multidimensional: you'll immediately notice sweet grape and berry notes reminiscent of a well-stocked fruit stand, followed by earthy, woody undertones that ground the experience. Subtle hints of citrus, chocolate, and herbal spice emerge as you break apart the buds, while some phenotypes express kush-like muskiness and even floral sweetness. The overall impression is of a rich, dessert-like aroma that manages to be both indulgent and natural.

👅 Flavor Experience

The flavor journey of Sirius Black mirrors its complex aroma. On the inhale, you're greeted with pronounced grape and berry sweetness—think Concord grapes mixed with wild blackberries and a touch of plum. The mid-palate introduces earthy, herbal notes balanced by citrus brightness that prevents the sweetness from becoming cloying. Some users detect spicy, woody undertones reminiscent of forest floor after rain. The exhale leaves a smooth, fruity-sweet finish with lingering notes of grape and subtle chocolate. This flavor profile makes Sirius Black particularly enjoyable through vaporizers, which preserve the delicate terpene nuances.

🎯 Effects & Experience

Sirius Black delivers a powerful yet well-rounded high that typically begins within 5-10 minutes of consumption. You'll first notice a wave of euphoria and mental uplift that brightens your mood and can inspire creativity. This cerebral phase is accompanied by growing physical relaxation that starts in your shoulders and neck before spreading throughout your body. The indica dominance becomes increasingly apparent as the experience progresses—muscles loosen, tension melts away, and a profound sense of calm settles in. Many users report feeling happy, content, and stress-free while maintaining enough mental clarity for conversation or light creative activities. The peak effects last 2-3 hours, gradually transitioning into deep relaxation and sleepiness. The body high is particularly noteworthy, providing significant relief from physical discomfort without complete sedation in moderate doses.

🎮 Use Cases & Activities

Sirius Black excels as an evening and nighttime strain. It's ideal for unwinding after a stressful day, enjoying a movie marathon, engaging in meditation or gentle yoga, pursuing creative hobbies without pressure, and preparing for restful sleep. The initial uplifting effects make it suitable for low-key social gatherings among close friends, while the deepening body relaxation makes it perfect for pain management and muscle recovery. Many users appreciate this strain for artistic pursuits—the creative mental stimulation combined with physical comfort creates an ideal state for music appreciation, journaling, or other contemplative activities.

💚 Medical & Therapeutic Potential

Sirius Black shows significant therapeutic promise across multiple conditions. The strain may help with chronic stress and anxiety, providing mental calm without overwhelming sedation. Its potent body effects may offer relief from chronic pain, muscle tension, arthritis, and inflammation. The myrcene-rich profile makes it particularly effective for insomnia and sleep disorders, helping users achieve deep, restorative rest. Additionally, the mood-elevating properties may provide support for those managing depression and mood disorders. Some users report appetite stimulation, making it potentially helpful for those experiencing appetite loss. The high caryophyllene content suggests possible anti-inflammatory benefits through CB2 receptor activation.

👁️ Visual Characteristics

Sirius Black buds are visually stunning, living up to the strain's dramatic name. Dense, chunky nugs display deep forest green as the base color, often accented by rich purple and violet undertones that become more pronounced in cooler growing conditions. Fiery orange to rust-colored pistils weave throughout the buds, creating striking contrast against the darker foliage. The entire structure is blanketed in a thick layer of frosty trichomes that give the buds a crystalline, almost silvery appearance—hence the "black" name, as the heavy resin coverage can make the buds appear darker. Bud structure is typically dense and compact, characteristic of quality indica genetics, with substantial weight for their size.

⚠️ Consumer Considerations

Sirius Black is best suited for intermediate to experienced consumers due to its high THC content (15-26%). Beginners should start with small doses and wait to assess effects before consuming more. The strain's sedating properties mean it's not ideal for daytime productivity or situations requiring high alertness. Common side effects include dry mouth and dry eyes, easily managed with hydration and eye drops. Some users may experience drowsiness or couch-lock at higher doses. The strain's potency makes it excellent for tolerance breaks or as a nightcap for experienced users seeking reliable relaxation and sleep support.

Research Methodology

How we compiled this strain profile

66%
Data Confidence

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

Data Quality by Section

Terpenes Low (11 sources)
Effects Low (16 sources)
Lineage Low (14 sources)
Medical Low (12 sources)
Aromas Low (15 sources)
Cannabinoids Low (13 sources)
Last updated: August 14, 2026

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