Sirius Black Seeds

From: 11.00

Feminized Sirius Black is an easy-to-grow cannabis strain that may produce 400–500 g/m2 in a greenhouse and 700–900 grams per plant in a garden. You may harvest the long, THC-rich buds nine to ten weeks into the flowering process. Sirius Black has a most pleasant, fruity scent. Grape, berry top notes, and a woodsy undertone make for a lovely potpourri. These buds have an earthy taste that is enhanced when crushed up.

Sirius Black Seeds

Shipping info

Various shipping options & lost mail replacement.

USA customers spend over $115 to get free tracked shipping. Tracked delivery costs $10 for orders under $115.

Non USA customers - get free standard shipping on orders over $65. Orders over $115 get free Tracked shipping.

Usually seeds arrive within ten days. Did not receive your seeds? We will happily replace your seeds. See FAQ

  • EU  3–5 days
  • USA & Canada 6-10 days
  • Rest of the world 7–10 days

Why choose us?

We have been in the business for over 15 years, this has helped us build a relationship with other big brands and breeders in this space. We can bring you the best cannabis seed discounts you can find on the web!

Where else will you find a deal like ours?

  • Buy 1, get 1 FREE promos
  • Germination guarantee
  • Lost mail replacement

If you have any questions, do not hesitate to contact us!

Choosing seeds

Feminized seeds
When given less than 12 hours of light every day, feminized seeds bloom and produce weed. Gather either in the fall outside or indoors after around 15 to 20 weeks. Feminized strains are used by beginners & experienced growers and produce higher-quality buds than auto-flowering strains.

Automatic seeds
Easy to grow and simple plants can be cultivated from auto-flower seeds in just 10 to 14 weeks before they are ready to be picked. Fantastic for first-time cultivators, limited harvesting areas, and seasonal yields.

How to germinate

To ensure germination, immerse the seeds in a glass of water for at least 12-72 hours while keeping them in the dark at room temperature. When the whitetail appears, plant your seeds 1/2 inch deep in the soil or another medium that has been moistened. You should see a seedling emerge within 2 days after planting. Seedlings thrive in bright, sunny conditions (21°C to 23°C)

Breeder – Garden of Green

Sirius Black Cannabis Strain

In the Harry Potter universe, the mysterious Sirius Black is linked to the cannabis strain known by the same name. The term stems from the reportedly dark purple hue of the strain. Sirius Black Project was created in Portland during the 1980s. The speculations about the strain’s background are irrelevant because it is extremely fragrant and produces a persistent body high. According to tests, the THC content is between 15% and 25%.

Whether or not the dark coloration inspired its moniker, Sirius Black’s blossoms are nonetheless magnificent. This strain’s true, legitimate buds are rather big overall but narrow at the tip, resembling little pine cones. They have maintained the characteristic Indica shape, with leaves that spiral inward around the center stems. Each leaf is a consistently deep purple, almost indigo color, with barely the faintest trace of green. The distinctive hue of this fruit is due to a high concentration of pigments called anthocyanins. All over their surfaces, these beautiful flowers contain hazy, translucent trichomes and golden pistils, which serve as the ultimate identifying characteristic.

Growing Sirius Black Seeds

Feminized Sirius Black is an easy-to-grow cannabis strain that may produce 400–500 g/m2 in a greenhouse and 700–900 grams per plant in a garden. You may harvest the long, THC-rich buds nine to ten weeks into the flowering process. The Sirius Black cannabis strain is available here as feminized seeds. Irish Seeds Bank suggests using the LST technique when cultivating indoors to ensure consistent growth and maximize yield.

Sirius Black Flavor and Effect

Sirius Black has a most pleasant, fruity scent. Grape and berry top notes and a woodsy undertone make for a lovely potpourri. These buds have an earthy taste that is enhanced when crushed up. Sirius Black creates gentle smoke on the lungs when smoked from a bowl or a joint. The aftertaste of this thick smoke is flowery and fruity, and it’s rather lovely.

The full benefits of this flavorful smoke may not be felt for some time. Within 10 minutes of exposure to Sirius Black, many people experience symptoms of high pressure in the brain, such as cramps in the temples or blushing of the cheeks. Otherworldly changes in sensations, such as a flatness of depth perception and other hearing and visual aberrations, may be experienced when these peculiar tics gradually disappear. With the help of decent music, this trippy setting is ideal for unwinding with like-minded friends. Because of the subtle cerebral stimulation provided by Sirius Black, users may have a greater sense of comfort while engaging in conversation with others, be they, long-standing friends or strangers. With continued use, the indica effects of Sirius Black—including a sense of overall calm and a calming of the mind—can be fully appreciated (or with increased dosage). People who smoke may want to sit down immediately after moving around or standing. Due to the stress-reducing properties of this bud, you may unwind completely and breathe deeply without worrying. Under the right circumstances, one may experience drowsiness and perhaps a state of persistent couchlock.  Due to its laid-back vibes, Sirius Black is experienced better in the late evening or at night.

Sirius Black, due to its sedative properties, may potentially have been used by medicinal marijuana users. The strain has a sedative effect that temporarily relieves stress, melancholy, anxiety, and even PTSD. On the other hand, the euphoric effects on the body make it easy to forget about the pain, whether the pain is acute (caused by accident) or chronic (such as fibromyalgia or arthritis). Given the right circumstances, exposure to Sirius Black may induce sleep and promote restful slumber. Since this strain is less likely to bring on severe, repetitive thought processes, it may help individuals susceptible to anxiety or paranoia.



Garden of green


1 seed, 3 seeds, 5 seeds, 10 seeds, 15 seeds, 50, 100, 200, 500, 1000

Flowering Time


21-24 %

Yield indoor

550-650 g/m²

Yield outdoor

500-800 g/m²


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Do you ship worldwide?

Yes, but it is important that you check local laws before ordering, as they differ from region to region. Ordering from us confirms that you are aware of this.

Estimated Delivery Times?

Below are estimated delivery times based on experience and customer feedback. Orders are sent at approx. 2 pm (except for national holidays), so if you order after 2 pm on Friday, your order will be sent on Monday.

We use super stealthy packaging!

  • 1 - 2 days: USA & Canada
  • 3 – 4 days: European Union
  • 4 – 6 days: Australia, Brazil, Thailand, China, New Zealand, Turkey, UAE

Do you offer FREE shipping?

  • USA  - spend $75 to get free USPS 48hr shipping
  • Other countries  - spend $50 to get free standard shipping
  • Other countries - spend $125 to get free tracked shipping

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