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Sirius Black Strain Review: Deep Purple Indica-Dominant Hybrid

Strain Reviews · By Aaron Girard · Updated · 5 min read

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Contents

The Sirius Black strain is an Indica-dominant hybrid that stands out for its purple appearance, calming effects and fruity aroma. If you’re looking for a strain with strong body relaxation and a smooth grape flavor, Sirius Black may suit your evenings.

In this Sirius Black strain review, I’ll cover its background, terpene profile, effects, flavor, and the type of adult cannabis user it’s best suited for.

What Is the Sirius Black Strain?

Here’s the strain information for the Sirius Black I bought:

● Breeder: Oregon Breeders Group (parent strains not confirmed) ● Type: Hybrid strain with Indica dominance ● Potency: High THC, very low CBD (exact numbers vary by batch) ● Dominant Terpenes: Myrcene, Linalool, Caryophyllene (as labeled) ● Packaging Date: 04/10/2025 ● Tested & Reviewed: 04/28/2025 ● Price: $36 for 3.5g at Archive Portland ($10.29/gram)

A note on numbers: THC and CBD percentages and terpene profiles vary by grower and batch, so treat the details here as one sample and check the label on the product you buy.

Sirius Black is known for the deep violet, almost black coloration of its buds, which makes it one of the most visually distinct strains on the market. Oregon Breeders Group says Sirius Black emerged in the early 2010s and became one of its best-known cultivars.

This product was bought legally in Oregon, where adults 21 and older can possess and use cannabis within set limits. Marijuana is still a Schedule I drug under US federal law, outside a 2026 rescheduling rule that covers only FDA-approved and state-licensed medical products, and state laws differ.

Appearance: 5/5

siruis black strain

Visually, Sirius Black weed is breathtaking. The dense, frosty buds are nearly all purple with almost no green visible. Deep violet hues dominate the flower, with bright orange pistils and shimmering white trichomes giving it a glittering, icy finish.

This strain is well-cultivated: each nug is compact, sticky and visually stunning. If bag appeal matters to you, this strain deserves a perfect score.

Aroma: 4/5

Once you crack open the jar, a burst of sweet grape and berry aromas fills the air. The dominant terpene here is myrcene, which is known for its musky and fruity notes. Linalool adds a light floral undertone, while caryophyllene contributes a faint spice on the back end.

The aroma is fragrant and inviting, but not overpowering. If you love grape-scented weed strains like Granddaddy Purple or Grape Ape, you’ll appreciate Sirius Black’s fruity bouquet.

If you want to understand why cannabis strains like this smell the way they do, you can learn more about how terpenes influence aroma and effects in this helpful resource.

Flavor: 3.5/5

Sirius Black offers a mild grape and berry flavor profile on the inhale, which is smooth and easy on the throat. On the exhale, I picked up a more earthy and herbal finish, likely from the caryophyllene content.

While the taste is pleasant, it’s not as bold or juicy as the aroma suggests. If you’re expecting a flavor bomb, you may be slightly underwhelmed. But if smoothness and subtlety are more your thing, Sirius Black won’t disappoint.

Effects: 4.5/5

This is where the Sirius Black strain truly shines. Within 10 minutes of smoking, a calming body high began to take over. My limbs felt heavy, my breathing slowed, and a cozy sense of calm washed over me.

The effects are predominantly physical, with a slight mental haze that can leave you feeling spacey and introspective. It’s not overwhelming or dizzying, just deeply relaxing. I wouldn’t call it sedating at first, but after an hour, I felt ready for bed.

Best for:

  • Nighttime use
  • Unwinding after work
  • Relaxed evenings at home

This strain isn’t a treatment for sleep problems, anxiety or pain, and effects vary by person. Be cautious if you’re a beginner, since it’s easy to overdo it with a high-THC strain.

Effects differ from person to person, and NIDA notes that anxiety, panic and hallucinations are more likely with strong THC products or large amounts. Start low if you're new.

Who Should Try Sirius Black?

Sirius Black is best suited for:

  • Intermediate to advanced cannabis users
  • Fans of fruity, grape-flavored strains
  • Anyone seeking a calming Indica-dominant experience

New users should start with a small dose. The effects are strong, especially when smoked through a bong or vaporizer. This isn’t a daytime strain; it’s for chilling, not productivity.

Overall Rating: 4.5/5

Sirius Black is a top-tier Indica-dominant strain that delivers on looks, aroma, and effects. While the flavor isn’t as intense as the smell, the relaxing and full-body high makes it an excellent strain for winding down at night.

If you’re a fan of visually stunning weed, smooth smoke, and strong Indica effects without full sedation, Sirius Black deserves a spot in your rotation. It’s not ideal for beginners or daytime use, but for a cozy night in, it hits the mark.

Alternatives to Sirius Black Strain

weed ready to roll

If you can’t find Sirius Black at your local dispensary or want similar strains to try, here are three solid alternatives:

Frequently Asked Questions (FAQs)

Is Sirius Black strain Indica or Sativa?

Sirius Black is an Indica-dominant hybrid known for its relaxing, heavy body effects.

What does Sirius Black strain taste like?

It has mild notes of grape and berries with earthy undertones and a smooth finish.

How strong is Sirius Black strain?

Sirius Black is sold as a high-THC strain, but exact numbers vary by grower and batch. Check the label, and start low if you’re new.

What is Sirius Black strain best for?

In my experience, it suited nighttime use and winding down. It isn’t approved to treat any condition, and effects vary by person.

Who bred the Sirius Black strain?

Sirius Black was bred by Oregon Breeders Group, an Oregon breeding group that names it one of its most notable cultivars.

Sources

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