Almost all of us have seen the Harry Potter films and if not, the name Sirius Black may still be familiar to you. A mysterious and magical figure from the equally magical film with special powers. Exactly the capacities that this cannabis strain also features.

Do you want to grow this special strain? Buy our feminized Sirius Black seeds right away or read more to get more information.

Growing the Sirius Black strain

The Sirius Black weed strain is an indica dominant hybrid (70%). Powerful with a heavy terpene profile, beautiful deep purple colors and originally developed by the Oregon Breeders Group from Portland in the 80s.

Growing the Sirius Black strain is not extremely difficult. Breeding experience is nevertheless advised when growing this strain. Especially since in many cases the plant needs to be trimmed to optimize the incidence of light.

Do you have some breeding experience? Then you can grow an impressive strain with our feminized Sirius Black seeds in a short time. In the early stages of flowering, the plant soon displays its magical deep purple color palette. Purple, combined with green and yellowish pistils. The Sirius Black strain has an authentic compact indica structure and will develop medium to large tapered buds that look like ripe cones. Pine cones with lavender-colored crystals.

Our Sirius Black strain can be grown indoors or outdoors. Outdoors, this beauty of a lady thrives especially well in a warm climate. The leaf structure of the plant is relatively small and the flowering time is approximately 9 to 11 weeks.


Do you use our feminized Sirius Black seeds for indoor cultivation? Then the plant reaches an average height of 80 cm and you harvest a maximum of 300-450 grams per square meter. When grown outdoors, the Sirius Black strain can reach a height of 150 cm and yield up to a maximum of 650 grams per m2. Not bad for an Indica dominant specie!

Taste, odor and effect Consuming Sirius Black weed is a fantastic experience. The taste is sweet and grapey, but at the same time a bit sharp. Scents are fresh and earthy. You may smell musk, but the predominance is the citrus and sweet berries. Effects that you can expect while consuming Sirius Black weed are soothing and narcotic. A typical relaxing Indica effect, with cerebral, euphoric and creative impulses. Great for the evening!

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 70 to 80 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 4 reviews


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

Write a review

Tell us what your experience is with Sirius Black feminized seeds and help other growers!

Failed to sent review

Thanks for your review!

We will never publish your email address

Payment, shipping & delivery guarantee

What you can expect from us regarding payment, shipping and the delivery guarantee.

We do our utmost to deliver your order as fast as possible, with free shipping world wide, discreetly packaged and a guaranteed delivery.

  • Free shipping - We ship your order to United States (US) for free.

  • Discreetly packaged - The packages we send are very discreet without any reference to cannabis or cannabis seeds

  • Delivery time - You can expect your order within 15 to 26 business days on average.

  • Free replacement - In the rare cases where your seeds get damaged during shipment, we will replace for free.

You can find more information about shipping on our page Shipping & delivery

We offer the following payment methods:

  • Bank transfer - We have bank accounts in multiple countries for faster transfers. After ordering you receive an email with payment instructions.

  • Cash - Easily pay with cash in your currency and send to our office. This is the most private and anonymous way to order. After ordering you receive an email with payment instructions.

  • Creditcard - You can easily pay with credit card. Your payment will be processed by a secured payment service provider. Check with your card provider to remove restrictions for overseas purchases before you order

  • Bitcoin & altcoins - Pay with bitcoin or another altcoin for a private and anonymous checkout.

You can find more information about payments on our page Payment & processing

What does delivery guarantee mean? - Weedseedsexpress offers their customers a delivery guarantee which means that we provide a one time free re-shipment after 35 business days in case your products didn't arrive. We can only provide this free replacement of your order with Track and Trace. The Track and Trace is necessary for both you and Weedseedsexpress to have proof of shipment and to easily track the location of the order

Sirius Black feminized alternatives

These weeds seeds are a great alternative for Sirius Black feminized seeds

  • CBD Purple Kush autoflowering feminized seeds
    0.5% THC 17% CBD 500 gr/m2
  • Northern Lights autoflowering feminized seeds
    20% THC 0.2% CBD 175 gr/m2
  • AK 48 feminized seeds
    17% THC 2% CBD 400 gr/m2

Sirius Black feminized seeds

(4 customer reviews)

Select your pack:

Our secure payment options

  • Free shipping to United States (US)

  • Shipping within 24 hours on business days

  • Delivery guaranteed