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? Read on and buy your 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 the Sirius Black strain (indoors and outdoors)

The Sirius Black plant can be grown indoors, outdoors or in a greenhouse. She loves heat and prefers a Mediterranean climate. However, she is also great to grow in temperate climates as long as it is a warm summer.

Sirius Black is a 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 the plant 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 responds well to training 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 feminized 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, the 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 the plant. This amounts to approximately 63 to 70 days when grown indoors. When grown outdoors, you can harvest in mid-October.

Plant height 

The Sirius Black plant has a pleasantly manageable height:

  • Indoor height 80 cm to 120 cm
  • Outdoor height 120 cm to 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? Then your harvest can reach about 350 grams per m². If you're growing outdoors, the yield can go as high as a magical 650 grams per m². Not bad for an Indica!


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 an 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. Sirius Black weed boasts a taste of ripe black grapes and blueberries. 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 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.

Buy Sirius Black seeds 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 and grow your own magical weed.

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 300 to 350 grams/m²
Max yield outdoor 500 to 650 grams/m²
Height indoor 80 to 120 cm
Height outdoor 120 to 150 cm
Flowering time 63 to 70 days
Fungal Resistance Medium
Growersprofile Moderate
Cultivation Indoor, Outdoor, Greenhouse
Climate Temperate, Mediterranean, Arid
Flavors Berry, Citrus, Earthy, Fruity
Effects Calming, Creative, Euphoric, Happy, Relaxed
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 11 reviews


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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