Free shipping
We ship for free on orders above $ 100.00.
Our goal is to give you the best experience possible! We ship your order quickly, offer free worldwide shipping, use discreet packaging, and guarantee delivery on all tracked orders.
continue shopping
secure connection
secure connectionAccount
Cart
Search
Sirius Black SeedsPhotoperiodFeminized
Sirius Black Feminized is one of those strains that hits the senses before you even light it. Deeply relaxing, citrusy fresh, and thick with resin. A true heavy-hitter wrapped in a velvet glove.
- Up to 25% THC
- 70% Indica 30% Sativa
- Deep calming and creative effects
- Generous indoor and outdoor yields
- Shipped discreetly from NY, USA
- Free shipping above $100.00
- Germination Guarantee
- 4.7/5 Based on 2530 reviews
Secure payment options
Sirius Black Seeds
PhotoperiodFeminized
Sirius Black Feminized is one of those strains that hits the senses before you even light it. Deeply relaxing, citrusy fresh, and thick with resin. A true heavy-hitter wrapped in a velvet glove.
- Up to 25% THC
- 70% Indica 30% Sativa
- Deep calming and creative effects
- Generous indoor and outdoor yields
- Shipped discreetly from NY, USA
- Free shipping above $100.00
- Germination Guarantee
- 4.7/5 Based on 2530 reviews
Secure payment options
Why you should buy Sirius Black Feminized Seeds
Sirius Black isn’t just a pretty name. It’s a heavyweight indica-dominant strain that delivers knockout flavor, stunning bag appeal, and a high that walks the line between deeply relaxing and energetically creative. Whether you're looking to melt into the couch or drift off on a wave of citrusy euphoria, Sirius Black brings the goods in style.
Perfect for growers chasing something with bold terps, solid resistance, and a compact structure that doesn't compromise on yield, this one shines in just about any setup. It’s forgiving, flavorful, and absolutely drenched in trichomes by the end of bloom. And the aroma? Let’s just say your carbon filter better be on point.
Strain Overview
Origin
The exact lineage of Sirius Black Fem is shrouded in a bit of mystery, but what’s clear is its Oregon-born reputation for dark purple buds and rich, fruity aromas. Originally championed by the folks at Oregon Breeders Group, this strain has grown from cult favorite to modern classic. It’s indica-leaning through and through, with just enough sativa in the mix to keep things interesting upstairs.
Effects & Flavors
Take the first hit and you’re greeted with a burst of citrus and earthy chocolate, followed by sweet fruit and kushy depth. There’s a zesty lemon skunk kick in the nose too, wrapped in a pungent, woody undercurrent that makes each toke feel like a sensory detour through a dense fruit grove and a funky spice market.
Effect-wise, Sirius Black doesn’t mess around. The high is fast acting and powerful, starting with a wave of happy, uplifting energy before sliding smoothly into a deep calm. Depending on your mood and dose, it can make you feel creative and talkative or gently lull you into sleep. A true all-rounder.
THC & CBD Levels
With 25% THC and just 0.05% CBD, Sirius Black Fem hits hard and fast. This is one for those who like their weed strong, flavorful, and full bodied. It's got the punch for seasoned smokers but manageable enough in smaller doses for those still finding their footing.
Terpenes
Sirius Black is a terpene buffet, led by terpinolene, beta-caryophyllene, and linalool, with backup from limonene, cymene, phytol, borneol, and a whole crew of supporting players like valencene, eucalyptol, and the pinene twins (alpha and beta). The result is a flavor profile that’s floral, fruity, spicy, and just a touch herbal and minty, with mood-lifting and body-soothing effects to match.
Growing Sirius Black Seeds
Grow Difficulty
Sirius Black is well suited to both beginners and experienced growers. It’s not the type to throw tantrums if conditions aren’t perfect. With medium to high fungal resistance and a solid growth structure, she rewards even laid-back growers with dense, resin-caked colas.
Indoor vs. Outdoor Growing
Indoors, she stays nice and compact, between 31 inch and 47 inch, making her great for tents and stealth setups. Outdoors, she can stretch up to 59 inch, typically ranging between 47 inch and 59 inch, and thrives in a wide range of climates. From warm Mediterranean gardens to temperate greenhouses and even cooler polar zones if you're pushing your luck, she holds up well. Just make sure she gets good light and airflow and you’ll be golden.
Flowering Time & Yield
Sirius Black takes about 56 to 63 days to flower, which is pretty reasonable for something with this much flavor and weight. Indoors, expect yields in the ballpark of 1.3–1.6 oz per square feet. Outdoors, with a bit of space and sunshine, she can push out a hefty 24.7–31.7 oz per plant. Not bad for a plant that stays relatively modest in height.
Buy Sirius Black Seeds Online at WeedSeedsExpress
If bold flavor, knockout power, and a grower-friendly attitude sound like your vibe, Sirius Black is calling your name. Available now in feminized photoperiod form, these seeds are ready to earn their place in your lineup. Order from WeedSeedsExpress and get fast, discreet shipping, plus our legendary support and germination guarantee. This one’s a keeper. Don’t sleep on it.
Click here for the full strain description.
| Lineage | Sirius Black |
| Flowering Type | photoperiod |
| Gender | feminized |
| Genotype | Indica dominant |
| Ratio | 30 % Sativa / 70 % Indica |
| Grower Profile | Advanced |
| THC | Up to 25.00% |
| CBD | Up to 0.05% |
| Yield Indoor | Up to 1.6 oz/sq. ft |
| Yield Outdoor | Up to 32 oz/plant |
| Height Indoor | Up to 47 inch |
| Height Outdoor | Up to 59 inch |
| Climate | Temperate, Mediterranean, Arid, Tropical, Polar |
| Flowering Time | 56 to 63 days |
| Flavors | Citrus, Fruity, Kush, Woody, Sweet, Lemon, Skunk, Chocolate, Earthy, Pungent |
| Terpines | Terpinolene, Beta Caryophyllene, Linalool, Limonene, Cymene, Phytol, Borneol, Eucalyptol, Valencene, Alpha Humulene, Beta Pinene, Alpha Pinene |
| Effects | Calming, Creative, Euphoric, Happy, Relaxed, Powerful, Sleepy, Uplifting, Energetic |
4.76Based on 21 reviews
Reviewed at 2025-04-29
I have grown Sirius Black for many years now . An enjoyable strain to puff on with a great high that most people will totally love.
Reviewed at 2025-02-09
Going well no problems, 100 percent germination rate
Reviewed at 2024-12-26
SOOO impressed with this strain. Grew O'doors, no manipulation (fiming, topping, LST), average soil, not a pro grower by any means, and still managed HUGE yield.
Reviewed at 2024-02-21
Payed for on the 27 of jan,got on the 21st of feb, posted to New Zealand.alsome very happy,will update once i start to grow
1 found this usefulReviewed at 2024-01-13
I haven’t got them yet
What does Sirius Black taste like?
Sirius Black tastes like sweet grape and berry with earthy, floral notes. Some phenotypes add a hint of citrus and spice, with a smooth, candy-like exhale.
What effects can I expect from Sirius Black?
Expect a relaxing, euphoric body high with a calm, happy mindset—great for winding down in the evening. Common side effects include dry mouth and dry eyes; start low if you’re sensitive.
How long does Sirius Black take to flower?
Indoors, the flowering time is typically 8–9 weeks. Outdoors, harvest is usually around early to mid-October in the Northern Hemisphere (around April in the Southern Hemisphere).
What yield can I expect from Sirius Black?
Under optimal conditions, indoor grows can reach about 1.5 oz per square feet-1.8 oz per square feet. Outdoors, expect roughly 14.1 oz per plant-24.7 oz per plant, depending on climate, veg time, and training.
How tall does Sirius Black grow?
Sirius Black stays compact to medium. Indoors it typically reaches about 31 inch-47 inch; outdoors it can get up to around 71 inch with a longer veg period. Training helps control height.
What climate and temperature does Sirius Black prefer?
A temperate climate with low humidity in late bloom works best. Ideal daytime temperatures are around 69.8 °F-80.6 °F. Slightly cooler nights can enhance color. Maintain good airflow and keep RH about 40–50% late in flower.
How strong is Sirius Black (THC/CBD)?
Sirius Black is typically high in THC with low CBD, delivering a potent, long-lasting effect. Potency can vary by phenotype and grow conditions.
Will Sirius Black turn purple, and how can I enhance the color?
Yes—its genetics are known for deep purple hues. Color shows best when night temperatures are a bit lower than daytime. Avoid extreme cold; focus on healthy plants, proper nutrition, and gentle temperature drops for vibrant color.
Ordering Information
Our seed bank is proudly located in the United States, in the heart of New York City.
When you order seeds from WeedSeedsExpress, we’ll ship them locally from our New York warehouse, ensuring fast, reliable, and discreet delivery.
Unlike other seed banks that ship from overseas, you won't have to worry about lengthy international shipping times or customs stopping your package.
Our US customers can expect their seeds in only 2-5 business days.
You can find further details about our ordering conditions related to shipping, payment, and guarantees below.
Discreetly packaged
Your privacy matters. Our shipments are super discreet, with no mention of cannabis or seeds anywhere.
Delivery time
You can expect your order within 2 to 8 business days.
Free replacement
In rare cases where your seeds get damaged or lost during shipping, we’ll replace them for free!
We offer the following payment options:
Crypto
Anonymous payment powered by Coingate. Binance Pay available
US Cash
Sending cash to our US address is totally anonymous and without any fees.
Check
Sending checks is totally anonymous and without any fees.
Venmo
Paying is easy with Venmo. You will receive detailed instructions after completing your order.
Money Order
Sending money orders is totally anonymous and without any fees.
Credit Card (VISA and Mastercard)
Fast and secure creditcard processing.
Germination Guarantee
Our seeds have an average germination rate of 96%. To make sure you have a 100% germination rate, we add free seeds with every standard seedpack (Not applicable to 3-packs or BOGO Deals). In case of germination issues, feel free to contact us any time so we can work towards a solution.
Delivery Guarantee
Our delivery guarantee applies for all tracked shipments, which are available for almost all countries we deliver to. You can see if we offer tracked shipments to your country on our shipping and delivery page.
While our delivery guarantee is available for tracked shipments only, we ensure to initiate an inquiry for any shipment that fails to reach its destination. We value your input as a customer and will collaborate with you to discuss the remaining alternatives, aiming to reach an agreement on the most favorable resolution.