Almost everyone has read the Harry Potter books or watched the movies. However, even if you haven't, you will no doubt have heard of the name Sirius Black. A mysterious, seductive and magical figure with special powers from the equally magical movie. Exactly as the properties of this weed are.

Sirius Black is an Indica-dominant hybrid (70%). She is potent and possesses both a heavy terpene profile and beautiful deep purple colors. An absolutely unique plant that will surprise, seduce and enchant you.

Curious about this magical weed with its unique and surprising powers? Keep reading and find out why you should buy your Sirius Black feminized seeds at Weedseedsexpress.

Why you should buy Sirius Black seeds:

  • Powerful effects due to a THC content of up to 25%

  • Generous harvest potential

  • Relatively easy to grow

Growing Sirius Black seeds (indoors and outdoors)

The Sirius Black cannabis seeds can be grown indoors, outdoors or in a greenhouse. She loves heat and prefers Mediterranean or arid climates. However, she is also great to grow in temperate climates as long as its summers are warm.

The Sirius Black strain is a weed strain with a relatively easy growing profile. In fact, due to her Indica dominant characteristics, the chance of problems is very limited. Still, a little experience growing cannabis will work in your favor. Especially since in many cases, she needs to be pruned to optimize light penetration. 

Promoting light penetration will benefit your harvest, but to really maximize your yield, it's worth noting that Sirius Black feminized seeds responds well to growing methods like Sea of Green and Screen of Green.

Do you have some growing experience? Then you'll be growing an impressive plant in no time with our Sirius Black seeds. The plant features an authentic, compact Indica structure and medium to large buds that look a bit like ripe pine cones with lavender crystals.

Even in the early stages of flowering, a Sirius Black plant displays its magical deep purple color palette. Eventually, her purple glow will show throughout the length of the buds, where her violet hues are accompanied by beautiful green and yellowish pistils.

Flowering time

In order to utilize the full potential of Sirius Black, it is advisable to complete the full flowering phase of this strain. This amounts to approximately 56 to 63 days when grown indoors. When grown outdoors, you can harvest in mid-October.

Plant height 

The Sirius Black plant height is rather manageable. Indoors, she will reach a height of between 80 and 120 centimeters. When grown outside, this strain will grow somewhere between 120 and 150 cm.

Sirius Black yield

Are you planning on using the Sirius Black feminized seeds for your indoor grow, and are you able of creating optimal conditions for your plant to grow and flower? Your harvest can reach about 350 grams per square meter. If you're growing outdoors, the yield can go as high as a magical 650 grams per plant. Not bad for an Indica!

Effects of Sirius Black

The high is just as impressive as the taste, with a full-body stone that is great for combating both mental and physical pains. The effects you can expect from Sirius Black weed are predominantly sedative and anesthetic. A typical relaxing Indica effect and great for a calm evening relaxing on the couch, alone or with your friends.

Sirius Black also induces a cerebral euphoria. She increases creativity, elevates the mood and provokes fits of laughter. She is therefore widely used to relieve stress, depression, pain, inflammation, seizures and migraines. In addition, the weed is wonderful for falling asleep with.

Side effects

Sirius Black can induce a dry mouth, dry eyes and mild dizziness as side effects. Staying hydrated before and during consumption is enough to alleviate these symptoms. Incidentally, beginners will need to pay attention to dosage to avoid lethargy and overwhelming couch-lock.

Smell and taste

The flavors of the weed are very enticing. Those who smoke Sirius Black weed will enjoy the sweet taste of ripe black grapes. The aroma is of dank earth with a hint of musk, and a citrus tang that you taste especially when you light your joint. All in all, consuming Sirius Black cannabis is a fantastic magical experience that you definitely don't want to miss!


The origin of Sirius Black is shrouded in as much mystery as JK Rowling's character. However, it is believed that the plant was originally developed by the legendary Oregon Breeders Group.

The best Sirius Black seeds for sale at Weedseedsexpress

As far as we are concerned, Sirius Black is a cannabis strain that you should definitely have grown once in your life. With her delicious flavors and aromas, Sirius Black never fails to indulge and stimulate the senses. She is also a plant that develops an exceptionally high quality weed and will never disappoint.

Convinced? Then buy your Sirius Black seeds at Weedseeds express, enjoy our germination guarantee and fast stealthy shipping, and grow your own magical weed before you can say "Accio".

Read morefold up

Specifications Sirius Black feminized seeds

THC level 25%
CBD level 0.05%
Variety 70% Indica / 30% Sativa
Genetics Sirius Black
Max yield indoor 400 to 500 grams/m²
Max yield outdoor 700 to 900 grams/plant
Height indoor 80 to 120 cm
Height outdoor 120 to 150 cm
Flowering time 56 to 63 days
Fungal Resistance Medium
Growersprofile Moderate
Cultivation Indoor, Outdoor, Greenhouse
Climate Temperate, Mediterranean, Arid
Flavors Citrus, Fruity, Kush, Woody
Effects Calming, Creative, Euphoric, Happy, Relaxed, Powerful
SOG suitable yes
SCROG suitable yes

Sirius Black feminized strain review

The latest reviews on Sirius Black feminized seeds, do you have experience with this strain? Share your experience with other customers and write a review about the Sirius Black feminized strain.

5 / 5 stars out of 15 reviews


DreamIT (Verified customer) 2022-07-13

Fantastic genetics, flowering with 8 other plants from other seed banks, turned out to be the most productive. I didn't get the color I was hoping for but the fact remains that it was delicious, with notes of tropical fruit, sweet and flavorful. It resists drought and high temperatures well, stretching as long as it can. Really great!

ian (Weedseedsexpress) replied on 2022-07-14

Hi DreamIT, Great to hear you enjoyed the magical flavors of this strain! Thanks for the review! Cheers, Ian

Br (Verified customer) 2022-06-28

This is my first time growing this strain and I am thoroughly impressed. I have plants topping out at 8’ + and are just starting to flower ( outdoor ) I’ll keep you posted

ian (Weedseedsexpress) replied on 2022-06-28

Hey Br, Happy to hear your grow is going smooth! Thanks for the review! Cheers, Ian

Joshua G (Verified customer) 2022-05-02

I have been wanting to grow Sirius Black for awhile now and finally am. I bought 10 seeds was given an additional 2 making 12 all together as a bonus. Seeds came quickly, packaged discreetly and looked amazing. All seeds germinated with no issues, and are pretty vigorous, and strong in structure. They have a purple hue/ shine in the leaves even as small 2 week staters. Plants reacted great to the direct sunlight and heat. They seem to thrive on less watering. Even though they are only a few weeks old they are robust, big, and fast growers. I have been growing for many years outdoors and can spot champion plants, plants that are gonna be high maintenance, or just trash genetics. I haven’t done much to them and I can tell already they are going to be super stars. I’ll leave another review after flower/harvest and upload pics if I’m able. Very happy with this strain and company. Based on my experience so far I would deeply encourage you to buy some of these seeds, or any strain from this company based on what I’ve experienced so far. Good job with the genetics!

ian (Weedseedsexpress) replied on 2022-05-03

Hi Joshua, Thanks for the kind review, it seems like Sirius Black is already treating you as she should. We hope your grow will be magical! 🧙‍♂️ Cheers, Ian

allan (Verified customer) 2022-02-23

Every time i get some seeds they are exactly what they say they are,Wicked strain this one .i have been smoking for a while and this is one of the best strains i have tried,Every one loves it,,Thank you

Vincent (Weedseedsexpress) replied on 2022-02-24

Hi Allan, Thanks a lot for your review! Enjoy your seeds. Cheers, Vincent

Al (Verified customer) 2021-11-04

Every strain comes out exactly as it says it will and in the pictures to ..amazing every seed grows to :) Thank you very much this s/b is the best i have done so far ,and every one loves it .Cheers

Vincent (Weedseedsexpress) replied on 2021-11-04

Hi Al, Thanks for this great review! We appreciate it very much! Cheers, David

Dan (Verified customer) 2021-09-18

This is one cool strain, amazing deep purple green and violet colours, the frosting is so thick and the buds are really quite big and beautiful, the smell is incredible, way different to anything I have grown before. Very bushy plant that needs alot of defoliation to get the best out of it. Well worth buying these seeds and has been such a pleasure to grow. Massive thanks to wse for getting these all the way around the world. Love the genetics, will only buy from you guys now.

Vincent (Weedseedsexpress) replied on 2021-09-20

Hi Dan, Thanks for the kind review. We are happy to hear that your seeds have grown well and that you will stick with us! Have a nice day! Cheers, Vincent

Dylan McLosey (Verified customer) 2021-04-25

First off I tip my hat the customer service as every question I had was answered with gusto. I started my grow by germinating 5 of these very discretely packaged seeds (hard to find a reliable seed bank in Australia, Iykyk) not only did ALL 5 germinate but all are growing well. Couldn't recommend this strain or service any more if I tried.

JP1 (Verified customer) 2021-04-21

Just love this strain. Smoke is sweet and super smooth. Plant is compact and robust. Took heavy training and cutting. Yield is moderate but worth those purple hued clusters. A very heavy hitter, use with caution! LOL

Kasey (Verified customer) 2021-03-21

Very happy with this strain took longer than expected and not the colour I thought it was going to be. Guess not hot enough here for outside grow. But very happy with outcome will get these again

Jaff (Verified customer) 2021-02-17

I loved the colors so much, I ordered the seeds, but thrown away twice by US mail in Chicago, but finally the company make extra efforts to sent the third times and I got it. So happy to grow this strain. This company keep their promises for 100%. And their services is super, they won't let you down. They will do whatever it takes until you got yours. Thank you so much Weedseeds Express.

Vic (Verified customer) 2021-02-13

Shipping is very discreet and I germinated 5 of my 20 . They all have turned into little trees . That’s 100 percent ⭐️⭐️⭐️⭐️⭐️ In my book. This was my 2nd purchase and looking forward to my next delivery

Ruby (Verified customer) 2020-10-07

Packaged so well! I was given extra seeds which was a lovely bonus! So excited to see how these bad boys turn out

Chris (Verified customer) 2020-08-06

World class customer service and incredible products. Highly recommend weedseedexpress and I can’t wait to grow this strain, it is planted and now I wait :)

Mark (Verified customer) 2020-04-25

I was worried a little bit about the shipping. But after a few days i got the seeds save delivered at my door. Even the border control wasent a problem compared to many other seeds-selling companies. The plants now grow perfectly in my backyard.

Luke (Verified customer) 2020-03-16

I'm super happy with this strain. Germination took longer then normal, but growing these beauties was a delight. I got a proper yield with my SCROG setup and will definitly purchase these again. p.s. customer serivce is amazing and shipping was super professional

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