Black Widow Strain Feminized SeedsShantibaba's Brazilian × South Indian line, the original White Widow
5.00 out of 5 · 7 reviewsThe Black Widow strain is the Brazilian sativa × South Indian indica hybrid that Shantibaba first sold as White Widow at Green House Seeds, then renamed Black Widow when he took the parent plants to Mr. Nice Seeds. It is a resin-heavy, sativa-leaning classic with an intense, euphoric head high and a spicy, woody taste. These feminized seeds grow female plants that flower in about 8 to 10 weeks.
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What is the Black Widow strain?
Black Widow is a sativa-leaning hybrid of a Brazilian sativa and a South Indian indica, bred by Shantibaba (Scott Blakey) and sold by Mr. Nice Seeds since the 1990s. The same parents were behind the White Widow that Shantibaba released at Green House Seeds; when he left and co-founded Mr. Nice, he kept the original lines and renamed them Black Widow. Black Widow flowers in about 8 to 10 weeks, is listed at up to roughly 24–25% THC, and is known for thick resin, a spicy and woody flavor and a strong, euphoric high.
60/40 comes from Female Seeds' feminized Black Widow on SeedFinder; Mr. Nice lists its original only as an indica/sativa hybrid.
Mr. Nice notes that Black Widow's resin builds hardest in the last weeks of flowering, which is why the breeder recommends the full bloom time.
Black Widow strain specs
Black Widow's timing and yield come from Mr. Nice Seeds' own description on SeedFinder, which covers the original regular line. The feminized seeds on this page are a separate feminized version of the same Brazilian × South Indian genetics, and Female Seeds' feminized listing gives a slightly shorter 8–9 week bloom. THC is reported by AllBud and seed banks, not by the breeder.
| Type | Sativa-leaning hybrid, about 60% sativa / 40% indica |
|---|---|
| Genetics | Brazilian sativa × South Indian indica |
| Bred by | Shantibaba (Scott Blakey), Mr. Nice Seeds (Netherlands/Switzerland) |
| THC | High; AllBud reports up to about 24%, seed-bank sheets about 25% |
| CBD | Low (under 1%) |
| Main terpenes | No breeder lab profile; Widow-family lines are usually listed with myrcene, caryophyllene and limonene |
| Aroma & flavor | Spicy, herbal and woody with a wine-like, slightly skunky nose |
| Reported effects | Euphoric, focused, talkative, energetic |
| Seed type | Feminized (female plants) |
|---|---|
| Flowering indoors | 8–10 weeks; about 10 weeks for full resin per Mr. Nice |
| Outdoor harvest | End of September to early October (Northern Hemisphere) |
| Height | Varies: a tall, stretchy sativa type and a short, compact indica type |
| Yield | 350–450 g/m² indoors; 300–400 g per plant outdoors (Mr. Nice) |
| Difficulty | Easy to moderate; recommended by the breeder for all levels |
| Best methods | Topping, LST, SCROG, stem support late in bloom |
| Climate | Indoors, or warm to temperate outdoor gardens with a dry autumn |
Where does the Black Widow strain come from?
Black Widow was bred by Shantibaba from a Brazilian sativa mother and a South Indian indica-dominant father, the same pairing he first released as White Widow while co-owning Green House Seeds in Amsterdam. When he left Green House in the late 1990s and set up Mr. Nice Seeds with Howard Marks, he took the original parent plants with him. Other companies were already selling seeds under the White Widow name, so he gave his version a new one: Black Widow.
Mr. Nice's description on SeedFinder says the line has been around since 1994 and credits it with the High Times Cannabis Cup in 1995, the year the White Widow name won, plus first place in the hydro coffeeshop category of the 2008 Highlife Cup. Exact landrace origins of the Brazilian and South Indian parents were never published. Some shop pages list Black Widow as "Sativa × Brazilian Lemon" or as a White Widow offspring; neither matches the breeder's records.
Is Black Widow the same as White Widow?
Black Widow and White Widow share the same Brazilian × South Indian parents, but they are now separate lines. Black Widow is Shantibaba's own continuation of the original cross at Mr. Nice, while today's White Widow seeds come from Green House and many other seed makers who have reworked and feminized their own versions over the years. Many growers regard Black Widow as the closer link to the early 1990s plant.
About these feminized seeds. SeedFinder notes that Mr. Nice's own Black Widow was never released as feminized seed. Feminized Black Widow, such as Female Seeds' X-Line version, is made by other seed producers from these genetics, so small differences from the Mr. Nice regular line are normal.
What does Black Widow taste like, and how does it feel?
Aroma and flavor
Black Widow tastes spicy, herbal and woody, with a sweet, nutty edge, and the buds give off a wine-like, faintly skunky smell. Female Seeds compares the taste to Indian spice, and AllBud reviewers add chemical and cherry notes on some plants.
- Spice
- Herbal
- Wood
- Nutty
- Sweet
- Skunk
Terpenes
- Myrcene
- Earthy, musky base often listed for Widow lines
- Caryophyllene
- Peppery spice that fits the Indian-spice taste
- Limonene
- Light citrus brightness under the wood
No lab terpene profile for Black Widow has been published; these are the terpenes commonly reported for the Widow family.
Reported effects
Black Widow is most often described as an intense, euphoric head high that leaves people focused, chatty and energetic. AllBud calls it one of the stronger classics and best suited to experienced consumers, with a mellow body feel arriving later.
- Euphoric
- Focused
- Talkative
- Energetic
- Happy
Black Widow's reported downsides are dry mouth and bloodshot eyes, and its strength can bring paranoia or panicky moments for newer users.
This Black Widow effect summary combines AllBud user reviews with descriptions from Mr. Nice Seeds and Female Seeds. Responses vary between people, and nothing here is medical advice.
How do you grow Black Widow seeds?
Black Widow seeds grow into a vigorous, resin-heavy plant that is fine for any skill level: veg until the canopy is filled, train the taller phenotypes early, and give the plants the full 8 to 10 weeks of bloom so the late frost can build.
- Germinate3–7 days
Feminized Black Widow seeds sprout like any modern seed; move seedlings to gentle light once the first true leaves open.
- Vegetate4–6 weeks indoors
Note which Black Widow plants stretch and which stay compact. Top the tall sativa types and pull their branches outward with LST.
- Flower8–10 weeks
After the move to 12/12, the sativa type can double in height. Stake branches as the colas fatten, since some growers report thin stems.
- HarvestDay 56–70 indoors · end Sep–early Oct outdoors
The compact type usually ripens first. Wait for mostly cloudy trichomes; Mr. Nice suggests about 10 weeks for the fullest resin.
Grow tips for Black Widow
- Expect two plant shapes. Mr. Nice and Female Seeds both describe a long, stretchy sativa phenotype that flowers slower and a short, compact indica phenotype that finishes faster. Plan your space for the taller one.
- Do not rush the finish. Black Widow puts on most of its frost in the last two weeks. Cutting at week 8 can cost resin, so let the slower plants run.
- Support the colas. A yo-yo, stake or trellis net keeps heavy Black Widow tops from bending over late in flower.
- Keep autumn rain off outdoor plants. Female Seeds warns that rain at harvest time can cut the yield. A greenhouse or rain cover helps in wet climates.
- Filter the air indoors. The spicy, wine-like smell grows strong in bloom, so a carbon filter is worth running from week 3 of flower.
Is Black Widow the right strain for you?
Great pick if you
- Want a piece of 1990s Amsterdam history with a documented breeder
- Like strong, euphoric, social sativa-leaning highs
- Enjoy spicy, herbal and woody flavors over candy or dessert
- Want feminized seeds that grow female plants for a simple harvest
Think twice if you
- Are new to cannabis or sensitive to strong head highs
- Need a fast finish; the best resin takes close to 10 weeks
- Want a sleepy, heavy indica for the evening
- Want very uniform plants; Black Widow throws tall and short phenotypes
Black Widow strain FAQ
Is Black Widow indica or sativa?
Black Widow is a sativa-leaning hybrid. Female Seeds lists its feminized version at about 60% sativa and 40% indica, reflecting its Brazilian sativa mother and South Indian indica-dominant father. Some plants grow tall and sativa-like, others short and indica-like.
Is Black Widow the original White Widow?
Black Widow is Shantibaba's continuation of the Brazilian × South Indian cross he first sold as White Widow at Green House Seeds. After leaving to co-found Mr. Nice Seeds, he renamed his line Black Widow, while other companies kept selling their own White Widow versions.
Who bred the Black Widow strain?
Black Widow was bred by Shantibaba (Scott Blakey) and is sold by Mr. Nice Seeds, the company he co-founded with Howard Marks. Feminized Black Widow seeds are made by other seed producers from the same genetics, because Mr. Nice only released it as regular seed.
How much THC does Black Widow have?
Black Widow is a high-THC strain. AllBud reports up to about 24% in some tests and seed-bank data sheets list around 25%, with low CBD. Mr. Nice does not publish a THC figure, and potency changes with phenotype and growing conditions.
How long does Black Widow take to flower?
Black Widow flowers in about 8 to 10 weeks indoors. Female Seeds lists its feminized version at about 60 days, while Mr. Nice recommends close to 10 weeks for full resin. Outdoors in the Northern Hemisphere it finishes at the end of September or in early October.
How much does Black Widow yield?
Mr. Nice lists Black Widow at about 350 to 450 g/m² indoors and 300 to 400 g per plant outdoors. Phenotype matters: the tall sativa type tends to produce more but takes longer to finish.
What does Black Widow taste like?
Black Widow tastes spicy, herbal and woody with sweet and nutty notes. The smell is often called wine-like with a light skunk edge, and the smoke is thick and resinous.
Is Black Widow good for beginners to grow?
Mr. Nice recommends Black Widow for growers of all levels. The main things to manage are the stretch of the taller phenotype, support for heavy colas and patience at the end of flowering. Its strong high is less suited to beginners than the grow itself.
Black Widow reviews
5.00 out of 5 from 7 reviews
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7 reviews for Black Widow Strain Feminized Marijuana Seeds
Black Widow's relatives and other Widow strains
Black Widow Autoflowering Feminized
White Widow Regular
White Widow Feminized
Blue Widow FeminizedBeaver Seeds sells cannabis seeds for collection and genetic preservation where permitted. Check the laws in your state, province or country before germinating seeds. Effects are user-reported and are not medical claims.
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Marco Kellis –
It produces enormous buds and amazing yields. thick, sticky buds. Just as good tasting as it smells! Additionally, the feeling was quite calming and pleasant. Will definitely be buying again!
J. Morgan –
Awesome strain. I grew with a great taste i love everything about her, the taste, smell and effect is super WOW! Smooth on the throat. For me it numbs my body. puts me in complete relaxation. Best to combat your stress and depression. Worth a try!
R. Bruns –
Excellent quality strain. Suitable for indoor and outdoor growing conditions. Easy to cultivate. Dense and flavorfull buds. Great high i felt hunger. Happy. Giggly. social. sleepy on the comedown. A good tool for your pain and stress and appetite. Try it.
R. Winslow –
I’ve been growing this strain outside in my garden for 4years, it has never let me down. Grew very quick and yielded way more than I expected. Incredible taste and aroma. It’s smooth smoking! The high was very euphoric, and relaxing. It keeps your head pretty clear too. Highly recommended.
K. Martel –
This is the best I’ve personally grown. Easy to grow plant.super bag appeal, Very strong, dense, and flavorful! Her scent is driving people crazy. Potent smoke. Amazing high an exceptional head high with remarkably intense euphoria, powerful happiness, deep relaxation. Absolutely recommended.
S. Mannino –
It was a fairly easy grow. Produce high yields and massive buds. Dense sticky buds. Tasting as wonderful as it smells. Potent smoke. Fantastic high a buzzy head high that is accompanied by accompanied with a relaxing effects. Best feeling I’ve had in a long time. I would recommend.
GamelinL –
Great Black Widow Feminized to grow and harvest. Started seeds in green house and transplanted into garden. Plants are fast growing and seeds are 100 percent germination. Plants are 150 cm tall The buds were very heavy and dense, packed with lots of resinous leaves and the grow of this strain was easy.