Cannabis Cannabis Strain Reviews

Sirius Black Cannabis (Weed) Strain Review

Sirius Black is an Indica-dominant strain that was created by the Oregon Breeders Group. It was named after the dark, brooding Harry Potter character and has a predominant sweet aroma with fruity overtones. It has an 80:20 genetic mix between Indica and Sativa, respectively, and most of its effects are Indica-like. The strain has a high THC content, typically ranging from 22% to 26% or even higher in some phenotypes.

Its effects are deeply relaxing, often inducing a euphoric and uplifting sensation followed by a sense of tranquility and drowsiness. This strain is commonly used to alleviate stress, anxiety, and chronic pain, making it a go-to choice for evening or nighttime use when relaxation and sleep are desired. It has a flowering time of approximately 8 to 10 weeks and can produce substantial yields of high-quality buds when grown under ideal conditions.

Due to its potent relaxing properties, Sirius Black is often used medicinally to help with insomnia, anxiety, depression, and various types of pain, including migraines and muscle spasms. Its sedative effects make it beneficial for those seeking relief from sleep disturbances or chronic restlessness. As you read on, you will find out more about the effects of this strain as well as its various applications. Let’s get started.

Sirius Black StrainFeatures/Details
OriginOregon Breeders Group
Also known asN/A
EffectsSleep aid, Pain relief, Relaxation, Euphoria, Creativity
Leaf ShapeIndica-dominant with broad and wide leaflets
Medical ApplicationInsomnia management, Relief of stress, chronic pain, and anxiety
FlavorSweet, Earthy, Woody
AromaSweet, Woody, Skunky
AppearanceShades of deep purple, lavender, and violet
Flowering PeriodApproximately 8 to 10 weeks
CannabinoidTHC levels of 22% to 26%; low CBD levels (usually 1% to 2%)
TerpenesCaryophyllene, Limonene, myrcene, and Pinene

Sirius Black Effects and Potency

Sirius Black has THC levels that typically range from 22% to 26% or higher, making it a relatively strong strain. It has relatively low CBD levels, usually below 1%. The effects of Sirius Black take hold relatively quickly, often within minutes after consumption. Users may initially experience a euphoric and uplifting sensation, followed by a gradual sense of relaxation and sedation.

The duration of effects can vary depending on individual tolerance and consumption method, but the overall experience typically lasts for several hours. The body high is characterized by a sense of physical sedation and tranquility that spreads throughout the body. This effect is particularly potent due to the strain’s Indica-dominant genetics and higher THC levels.

As the body high takes hold, users often experience a soothing heaviness and a gentle numbing sensation, which can lead to a “couch-lock” effect, making it ideal for relaxation and unwinding. It also provides a euphoric and blissful sense of happiness. The uplifting effects contribute to an overall positive mood and a sense of well-being. The combination of body relaxation and euphoria makes it a sought-after strain for stress relief and mood enhancement.

Potential Positive Effects of Sirius Black

  • Relaxation: Sirius Black has strong relaxing and calming effects, making it an ideal choice for stress relief and unwinding after a long day.
  • Euphoria: Users often report a euphoric and blissful feeling upon consuming Sirius Black, enhancing their mood and overall well-being.
  • Pain Relief: This strain is well-regarded for its potential analgesic properties, providing relief from various types of pain, including chronic pain, migraines, and muscle discomfort.
  • Sleepiness: Sirius Black’s sedative effects can lead to drowsiness, making it a favored option for those struggling with insomnia or seeking better sleep quality.

Potential Side Effects of Sirius Black

A common side effect of consuming Sirius Black is dry eyes and a dry mouth. It may reduce tear production, causing the eyes to feel dry and irritated. Eye drops or artificial tears can provide relief for this condition. The strain can cause a dry sensation in the mouth and throat, leading to increased thirst. Staying hydrated by drinking plenty of water can help alleviate this discomfort. Some users, especially those new to cannabis or with lower tolerance, may experience dizziness or feelings of lightheadedness after consuming Sirius Black.

This effect is more likely with higher doses or rapid consumption. High THC levels in Sirius Black can lead to an elevated heart rate, especially in those sensitive to THC or using large amounts. While not typically dangerous, individuals with heart conditions should exercise caution when using this strain. It may also trigger feelings of anxiety, paranoia, or nervousness. Users with a history of anxiety-related issues should generally be cautious when consuming high-THC strains.

Medical Applications 

Sirius Black has active sedative properties that make it a popular choice for those struggling with sleep disturbances or insomnia. Its relaxing effects may help promote a sense of tranquility and facilitate falling asleep. Like many Indica strains, Sirius Black can trigger the “munchies,” increasing appetite in some users.

This effect may be beneficial for individuals dealing with appetite loss due to medical conditions or treatments. Sirius Black’s powerful body high and potential analgesic properties make it an attractive option for managing chronic pain conditions such as arthritis, back pain, and muscle spasms. The strain’s relaxing effects may help alleviate discomfort and promote a sense of physical relief.

The euphoric and calming effects of Sirius Black may provide relief from stress and anxiety-related symptoms. Some users report experiencing reduced feelings of worry and tension, leading to improved mood and relaxation. The strain’s mood-enhancing properties could be helpful for individuals dealing with symptoms of depression.


Sirius Black exhibits a prominent sweet berry flavor, reminiscent of ripe grapes, blackberries, or blueberries. It also features earthy and herbal undertones. These flavors provide a grounding quality to the overall taste, contributing to the strain’s calming and relaxing effects. Some users report detecting subtle hints of spice and pepper as well as woody tastes in Sirius Black’s flavor profile.

These elements may vary depending on the phenotype and growing conditions, but they can add a pleasant kick to the overall taste. One of the unique and unexpected flavors that may be present in Sirius Black is a floral essence. Some users notice floral notes, akin to lavender or lilac, which can create a more intricate and enjoyable taste experience.

The taste of Sirius Black generally aligns with its aroma, forming a harmonious relationship between scent and flavor. The strain’s sweet and fruity aroma, often resembling grape candy or berry jam, tends to match the primary tastes experienced upon consumption.


Sirius Black exudes a strong and sweet berry aroma, reminiscent of ripe grapes, blackberries, or blueberries. This fruity fragrance is one of the defining characteristics of the strain’s smell. Some users liken the aroma of Sirius Black to grape candy or grape soda, and it also carries a pleasant earthy and woody scent. This grounding aspect enhances the strain’s inviting and calming effects.

There are subtle hints of pungent skunkiness in the aroma of Sirius Black. While not overpowering, it contributes to the strain’s richness, and some people may even detect subtle undertones of spice and pepper, which add another layer to the overall scent. A strain with sweet berry notes similar to those of Sirius Black is Blackberry Kush. While not totally identical to Sirius Black, those who enjoy the berry scent may appreciate the aromatic similarities.


Users are often surprised by the fact that a strain named Sirius Black is actually purple in color. The buds showcase shades of deep purple, lavender, and violet, which are especially prominent in well-grown and properly cured specimens. The purple coloration results from the presence of anthocyanins, pigments that develop in response to lower temperatures during the flowering stage.

Sirius Black’s buds have a dense and compact structure, indicating their Indica-dominant genetics. The tightly packed calyxes contribute to the strain’s overall robust appearance. One of the defining features of Sirius Black buds is the abundance of glistening trichomes covering the surface. These resinous crystals contain the strain’s valuable cannabinoids and terpenes, which are responsible for its potent effects and aroma.

The buds tend to be quite dense, offering a satisfying weight and feel when handled. While many strains exhibit purple coloration to some extent, Sirius Black’s vivid and intense purple hues set it apart from other strains. It is essential to note that the extent of purple coloring can vary depending on growing conditions, genetics, and the specific phenotype.

Buy Sirius Black Seeds Online

The most important thing to do when buying Sirius Black seeds online is to ensure you are buying from a reputable website. Ensure that you look for well-established and reputable seed banks that have a track record of providing high-quality seeds. Check online reviews and forums to see what other customers have experienced. Be specific in your search for Sirius Black seeds.

Reputable seed banks, such as Seedsman will clearly label their strains and provide information about the genetics and characteristics of the seeds they offer. Ensure that the seed bank’s website has secure payment options to protect your personal and financial information. It’s important to also consider the shipping restrictions and regulations for cannabis seeds in your location. Some seed banks may not ship to certain countries or regions due to legal restrictions.

Growing Information 

Sirius Black’s flowering time typically ranges from 8 to 10 weeks, which makes it suitable for growers looking for a quicker turnaround on their harvest. When grown indoors, Sirius Black plants tend to have a compact and bushy structure, reaching a moderate height of around 2 to 3 feet. Outdoors, they may grow slightly taller, typically up to 4 feet, depending on the growing conditions.

This strain thrives in a dry and temperate climate with moderate humidity levels. For indoor cultivation, maintaining a humidity level of around 40–50% during vegetative growth and reducing it to 30–40% during flowering is recommended. Temperature-wise, the plants prefer daytime temperatures between 70 and 80°F (21-27°C) and slightly cooler nighttime temperatures.

Sirius Black can be successfully grown both indoors and outdoors. However, due to its Indica-dominant nature and compact size, it is well-suited for indoor cultivation, especially in limited spaces or grow tents. Indoor environments allow for better control over climate variables, resulting in more consistent yields.

For outdoor growing, Sirius Black prefers a warm and sunny climate with a temperate climate. It can also tolerate cooler nighttime temperatures, making it suitable for regions with mild autumn conditions. Sirius Black’s dense structure can lead to reduced airflow within the canopy. Proper pruning and training techniques, such as low-stress training (LST) or topping, can help improve airflow and light penetration, leading to healthier plant development.

Like many cannabis strains, Sirius Black can produce a strong and distinctive aroma during flowering. Growers cultivating indoors should invest in odor control measures, such as carbon filters, to prevent strong smells from attracting unwanted attention.

Tips for Successful Growth

  • Genetics: Start with high-quality Sirius Black seeds or clones from reputable sources to ensure the best genetics and optimal growth potential.
  • Lighting: Provide the plants with sufficient light, especially during the flowering stage, as this strain responds well to intense light.
  • Nutrients: Feed Sirius Black plants with a balanced nutrient regimen, avoiding excessive nitrogen during flowering to encourage bud development and prevent nutrient imbalances.
  • Harvesting: Monitor the trichomes (resin glands) to determine the ideal time for harvest. Harvesting at the right moment ensures the desired potency and effects of the strain.
  • Drying and Curing: Properly dry and cure the harvested buds to enhance their flavor, aroma, and overall quality.

Always follow local laws and regulations regarding cannabis cultivation, and consider seeking advice from experienced growers or horticulturists to optimize your growing techniques for Sirius Black.

Cannabinoid and Terpene profiles

Sirius Black has a high THC content, which can range from 22% to 26% or even higher in some potent varieties. THC is the primary psychoactive compound in cannabis, responsible for producing the euphoric “high” and various therapeutic effects. It generally has low CBD levels, often less than 1%. CBD is a non-intoxicating cannabinoid known for its potential therapeutic benefits, such as anti-inflammatory, analgesic, and anxiolytic properties.

However, its presence in Sirius Black is typically minimal, and the strain is more renowned for its THC potency. Some Sirius Black strains may contain trace amounts of CBN, a minor cannabinoid that forms as THC oxidizes over time. CBN is mildly psychoactive and may contribute to the strain’s sedative effects. Sirius Black may contain small amounts of CBG, another non-intoxicating cannabinoid.

CBG is considered the precursor to other cannabinoids and has potential anti-inflammatory and neuroprotective properties. The terpenes in this strain include Caryophyllene, Limonene, myrcene, and Pinene. Myrcene is the most abundant terpene in Sirius Black and is responsible for its earthy and herbal aroma. It also contributes to the strain’s sedative effects, potentially enhancing relaxation and sleepiness.

Frequently Asked Questions

Question: Is Sirius Black an Indica-dominant strain?
Answer: Yes, Sirius Black is an Indica-dominant cannabis strain.

Question: What are the primary effects of Sirius Black?
Answer: Sirius Black induces deep relaxation, euphoria, and a calming body high.

Question: Does Sirius Black have any unique flavors or aromas?
Answer: Yes, Sirius Black has an earthy flavor with herbal and spicy notes.


Sirius Black is an Indica-dominant cannabis strain with high potency and relaxing effects. It originated in the United States and is admired for its striking appearance, with deep purple hues and dense, frosty buds. This strain induces a deep sense of physical relaxation and euphoria, making it a favored choice for stress relief and relaxation. The body high is more pronounced and longer-lasting than the head high. It is also beneficial for those seeking relief from chronic pain, stress, anxiety, and sleep issues. However, its low CBD levels make it less suitable for specific medicinal needs.

Sirius Black has a rich and earthy flavor, often accompanied by herbal and spicy notes. Its aroma is pungent, with a mix of earthiness and sweetness. The strain’s buds showcase vibrant purple colors, a compact structure, and a generous layer of trichomes, contributing to its visual appeal. All in all, Sirius Black is ideal for cannabis enthusiasts who enjoy deeply relaxing strains and are looking for stress relief, relaxation, and euphoria. Its potent effects may be more suitable for experienced users, while beginners should approach it with caution due to its high THC content.

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