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Hybrid60% Sativa / 40% Indica18–25% THC

White Widow

Also known as: Black Widow (Mr. Nice Seedbank)

Breeder: Green House Seeds / Shantibaba (disputed)

White Widow became one of the most recognized cannabis strains in the world after its 1994 debut. Named for the dense blanket of white trichomes coating its buds, it set a new standard for resin production and kicked off the 'White Family' of strains. Its unprecedented trichome density sparked an industry-wide race for frostier genetics. Its earthy, peppery 'old-school hash' character contrasts sharply with modern fruit-forward profiles. White Widow was released in 1994 through Green House Seeds in Amsterdam, bred by Scott Blakey (Shantibaba) during his partnership with Arjan Roskam. The strain's parentage — a Brazilian sativa landrace male crossed with a resin-selected South Indian indica female from Kerala — represented a departure from the Afghan/Skunk/Haze genetics that dominated Dutch breeding at the time. After winning both the overall Cannabis Cup and Bio Cup categories at the 1995 High Times Cannabis Cup, White Widow became the defining strain of Amsterdam's coffeeshop culture throughout the late 1990s and early 2000s. When Shantibaba left Green House Seeds in 1998 to form Mr. Nice Seedbank with Howard Marks and Neville Schoenmakers, he renamed his original breeding stock 'Black Widow' to distinguish it from the many White Widow versions that had proliferated across the seed market. The attribution of the strain remains disputed — while Shantibaba is the most widely recognized creator who has provided the most detailed account of the genetic sourcing and breeding process, the commercial credit remained with Green House Seeds where it was first sold. White Widow's genetic legacy extends far beyond the original line: it has served as a parent in dozens of well-known hybrids including White Russian (White Widow × AK-47), Blue Widow (White Widow × Blueberry), Moby Dick (White Widow × Haze), and White Rhino, among many others.

Lineage
Brazilian sativa landrace x South Indian
THC Range
18–25%
Flower Time
8–9 weeks
Difficulty
Easy to Moderate

Lineage & Genetics

Cross: Brazilian sativa landrace x South Indian indica (Kerala)

The Brazilian father was an IBL from the Sierra Nevada de Santa Marta region. The Indian mother came from a farmer in Kerala who had selectively bred for resin production over many years. Shantibaba retains the original parent plants in the Mr. Nice clone library.

Lineage Dispute

Breeder credit is contested between Shantibaba (Scott Blakey), who says he stabilized and released it through Green House Seeds in 1994, and Ingemar De Sjamaan, who claims to have discovered the genetics as early as 1987. When Shantibaba left in 1998, he renamed his line Black Widow at Mr. Nice Seedbank. At least 79 distinct White Widow versions now exist.

Terpene Profile

DOMINANT

Myrcene — Earthy, herbal, clove-like; ~0.7–1.2%

SECONDARY

Caryophyllene — Peppery, spicy; ~0.5–0.9%

SECONDARY

Pinene — Fresh pine, evergreen sharpness; ~0.3–0.6%

Aroma: Earthy and woody with distinct peppery spice, often described as 'old-school hash' character. Slightly soapy or floral on exhale.

Flavor: Woody, spicy-herbal, and earthy — a sharp contrast to modern dessert profiles.

Effects & Experience

Onset: Fast, powerful mental stimulation.

Euphoric, uplifted mood with energetic and talkative cerebral buzz. A relaxing physical undertone builds over time without heavy sedation.

Duration: 1.5–2.5 hours

Commonly Reported Uses

Stress reliefAnxiety managementPain reliefCreative energy

Grower's Notes

Flower
8–9 weeks
Indoor Yield
450–500 g/m²
Outdoor Yield
500–650 g/plant
Difficulty
Easy to Moderate
Height / Stretch
Medium (100–120 cm indoor)
Environment
Indoor, Outdoor, Greenhouse

White Widow is one of the most forgiving and rewarding photoperiod hybrids available to cultivators of any experience level. Bred in the early 1990s from a Brazilian sativa landrace and a resin-selected South Indian indica from Kerala, the plant exhibits a sturdy, medium-height structure with strong lateral branching that responds exceptionally well to training. Indoor plants typically remain between 100 and 120 cm (60–70 inches outdoors in optimal conditions), making the strain manageable in tents while still capable of impressive canopy spread when given room.

Flowering Time and Harvest

The flowering cycle runs 8 to 9 weeks under a 12/12 photoperiod, with experienced growers reporting finishes as early as 56 days on fast phenotypes and as late as 65 days on more sativa-leaning expressions. During the first three weeks of flower, expect a moderate stretch as the plant establishes a multi-topped frame. Weeks four through six bring aggressive resin production — the buds begin to appear silver-white as trichome density ramps up and the grow room fills with earthy, peppery-wood aromatics. The final two to three weeks are a hardening phase where colas pack on weight and the characteristic white trichome blanket reaches maximum density. Harvest readiness is best judged by trichome color: milky heads with approximately 10–20% amber indicates peak potency for most phenotypes.

Yield

Yield potential is well-documented across decades of cultivation data. Indoor growers consistently report 440–500 g/m² in standard setups (4 plants in a 1.2×1.2 m tent, flipped at 4–5 weeks of veg). SCROG configurations with extended veg periods of 6–7 weeks can push yields to 500–550 g/m². Outdoors in Mediterranean or warm-temperate climates, individual plants trained with LST and light supercropping routinely produce 500–650 g, with exceptional grows in southern European conditions documented at over 700 g per plant. The strain finishes outdoors by late September to early October in the Northern Hemisphere, making it one of the more reliable choices for growers in cooler regions where late-season mold pressure threatens longer-flowering varieties.

Pest and Disease Resistance

White Widow's notable mold and pest resistance is one of its most practical advantages. The plant handles cool nights, humidity spikes, and temperature fluctuations better than most hybrids of comparable resin density. However, the dense cola structure still benefits from attentive airflow management — particularly during weeks 6–9 of flower when bud density peaks. Indoor growers should maintain relative humidity between 40–50% during flowering, with strong air exchange across the canopy.

Nutrient Management

Nutritionally, White Widow is a moderate feeder that performs best when slightly underfed rather than overfed. The most common cultivation mistake is excessive nitrogen during flower, which produces loose, airy buds and unnecessary stretch. Phosphorus and potassium should be emphasized from week three of flower onward to support resin and bud development. The strain thrives in organic soil (which enhances its classic earthy-spicy terpene expression) but performs well in coco-perlite and hydroponic systems. Target pH of 6.2–6.6 in soil or 5.8–6.0 in hydro/coco.

Growth Structure and Training

Training is highly recommended. White Widow takes well to topping (typically at node 3 or 4 during veg, with optional secondary topping of branches before flip), LST for canopy flattening, and lollipopping to direct energy toward primary flower sites. SOG configurations with many small plants flipped early are also effective due to the strain's tendency to produce a dominant central cola when untrained. For best terpene expression, a slow 10–14 day dry at approximately 16°C and 55–60% RH followed by a minimum 3–5 week jar cure is essential — the complex earthy, piney, woody-spice profile that defines properly finished White Widow only fully emerges with patient post-harvest handling.

Bud Structure and Trichomes

The terpene profile is dominated by myrcene (0.7–1.2%) and beta-caryophyllene (0.5–0.9%), with secondary contributions from alpha-pinene (0.3–0.6%) and limonene. This combination produces the classic old-world cannabis aroma: forest floor, black pepper, fresh-cut pine, and damp earth rather than the fruit or candy profiles of modern dessert crosses. THC typically ranges 18–25% depending on phenotype and growing conditions, with occasional high-performing selections testing above 25%.

History & Origin

Released in 1994 by Green House Seeds in Amsterdam. Won 1st Place in both the Cannabis Cup and Bio Cup at the 1995 High Times Cannabis Cup, catapulting it to global fame. When Shantibaba left Green House Seeds in 1998, he co-founded Mr. Nice Seedbank with Howard Marks and Neville Schoenmakers, renaming his line Black Widow.

Awards & Recognition

  • ●1995 High Times Cannabis Cup — 1st Place, Cannabis Cup / Best Cannabis (Green House Tolstraat)
  • ●1995 High Times Cannabis Cup — 1st Place, Bio Cup (Green House Tolstraat)
  • ●1995 High Times Cannabis Cup — 2nd Place, Bio Cup (Dutch Flowers)
  • ●1995 High Life Cup — Winner
  • ●1995 Soft Secrets Strain of the Year
  • ●1995 Copa Cannabica Del Plata — Winner
  • ●1996 High Times Cannabis Cup — 1st Place, Nederhash
  • ●1998 High Times Cannabis Cup — 3rd Place, Bio (Dread Rock)
  • ●2003 Highlife Cup — 1st Place, Hydro Coffeeshops (Catweazle)
  • ●2017 Highlife Cup — 1st Place, Indica Category (Coffeeshop Regin, Haarlem)

Notable Crosses

Strains bred using White Widow as a parent:

White Russian— White Widow x AK-47→White Rhino— White Widow x Afghan Indica→Great White Shark— White Widow x Super Skunk→Blue Widow— White Widow x Blueberry→

Frequently Asked Questions

7 common questions about White Widow

What is White Widow and what are its genetics?

White Widow is a hybrid cannabis strain (60% Sativa / 40% Indica) bred by Green House Seeds / Shantibaba (disputed). It is a cross of Brazilian sativa landrace x South Indian indica (Kerala), testing at 18–25% THC. White Widow became one of the most recognized cannabis strains in the world after its 1994 debut. Named for the dense blanket of white trichomes coating its buds, it set a new standard for resin production and kicked off the 'White Family' of strains.

What does White Widow smell and taste like?

White Widow's dominant terpenes are Myrcene. The aroma is described as earthy and woody with distinct peppery spice, often described as 'old-school hash' character. slightly soapy or floral on exhale.. The flavor profile features woody, spicy-herbal, and earthy — a sharp contrast to modern dessert profiles..

What are the effects of White Widow?

Fast, powerful mental stimulation. Euphoric, uplifted mood with energetic and talkative cerebral buzz. A relaxing physical undertone builds over time without heavy sedation.. Duration is typically 1.5–2.5 hours. Commonly reported uses include Stress relief, Anxiety management, Pain relief, Creative energy.

How hard is White Widow to grow?

White Widow is rated easy to moderate difficulty. It flowers in 8–9 weeks, reaches medium (100–120 cm indoor) in height, and yields 450–500 g/m² indoors. Best suited for indoor, outdoor, greenhouse environments.

What are the parent strains of White Widow?

White Widow is a cross of Brazilian sativa landrace and South Indian indica. The Brazilian father was an IBL from the Sierra Nevada de Santa Marta region. The Indian mother came from a farmer in Kerala who had selectively bred for resin production over many years.

What strains were bred from White Widow?

White Widow has been used as a parent in several notable crosses, including White Russian, White Rhino, Great White Shark, Blue Widow. Its genetics contribute to a wide range of modern cultivars.

Has White Widow won any cannabis awards?

Yes. White Widow has received recognition including 1995 High Times Cannabis Cup — 1st Place, Cannabis Cup / Best Cannabis (Green House Tolstraat); 1995 High Times Cannabis Cup — 1st Place, Bio Cup (Green House Tolstraat); 1995 High Times Cannabis Cup — 2nd Place, Bio Cup (Dutch Flowers).

Sources & References (49)
  1. *Seedfinder.eu** — genealogy, breeder history, Cup records
  2. *Leafly** — terpene profile, THC average, user-reported effects (4,650+ reviews)
  3. *Mr. Nice Seedbank (mrnice.com)** — Black Widow product page, Shantibaba's own breeding notes
  4. *Barney's Farm blog** — detailed history, Cup context
  5. *Alchimia Grow Shop** — Ingemar interview summary, Shantibaba quotes
  6. *Premium Seed Market** — comparative analysis of breeder claims
  7. *Strainpedia** — terpene percentages, cannabinoid ranges, grow data
  8. *HashDash** — terpene ratio breakdown
  9. *AllBud** — THC range, sativa/indica ratio
  10. *Dutch Passion** — grow characteristics from seed producer
  11. *CannabiscupWinners.com** — 1995 HTCC results verification
  12. *Seedbanks.com** — real-world grow journal (9 grows)
  13. *Sensi Seeds blog** — White Family cross reference
  14. *GEA Seeds** — Kerala origin details, IBL Brazilian parent
  15. ### Conflicts Between Sources
  16. **Sativa/indica ratio:** Leafly and AllBud say 60/40 sativa-dominant. Amsterdam Seed Center and some Green House materials say 60/40 indica-dominant. Strainpedia and Hypno Seeds say 50/50. The strain's expression is genuinely balanced, and the ratio likely depends on phenotype selection.
  17. **Breeder credit:** Shantibaba vs. Ingemar De Sjamaan, as detailed above. Neither claim has been definitively proven, though Shantibaba has provided more verifiable detail and retains the documented parent stock.
  18. **THC range:** Leafly's aggregate average (15%) is lower than most other databases (18-25%), likely because Leafly averages across all products labeled White Widow — including lower-potency versions from dozens of seed banks. Well-grown examples from reputable genetics consistently test 18-22%, with top phenotypes reaching 25%.
  19. **Parent sexes:** Most sources agree the Brazilian was the male (pollen donor) and the South Indian was the female (seed mother), but at least one account (Barney's Farm) initially frames it in the reverse direction before clarifying.
  20. Key findings to synthesize:
  21. *Lineage**: Brazilian sativa landrace x South Indian indica (Kerala). Confirmed by Seedfinder, Leafly, Barney's Farm, Alchimia, GEA Seeds, Strainpedia, AllBud, etc. Note: There's a discrepancy about which parent was the male vs female - some sources say Brazilian male x Indian female, others say the reverse. Seedfinder says "Brazilian sativa male" pollinating "female plant originating from Kerala." Barney's Farm says "mother was a South Indian indica" and "father was a Brazilian sativa." So Brazilian = male/father, Indian = female/mother is the more consistent account from Shantibaba's own words.
  22. There's a contested origin story between Shantibaba and Ingemar De Sjamaan, with most sources crediting Shantibaba's stabilization and 1994 commercial release through Green House Seeds, though Ingemar claims an earlier discovery around 1987 from charas seeds—and Arjan Roskam has even backed Ingemar's version in interviews. The sativa/indica ratio also varies across sources, ranging from 50/50 to 60% sativa / 40% indica, with some outliers suggesting the opposite split.
  23. THC content sits in the 15-25% range depending on the source, though most phenotypes test between 18-22%, while terpene profiles are consistent across databases with myrcene leading, followed by caryophyllene and pinene. The strain won first place in both the Cannabis Cup and Bio Cup at the 1995 High Times Cannabis Cup, and it's been used in several notable crosses.
  24. Grower's Notes cultivation sources:
  25. https://en.wikipedia.org/wiki/White_Widow_(cannabis)
  26. https://www.leafly.com/strains/white-widow
  27. https://www.strainpedia.com/white-widow/
  28. https://hypnoseeds.com/the-blog/how-to-grow-white-widow-seeds-2025-grow-diary/
  29. https://seedbanks.com/white-widow-seeds-growing-guide/
  30. https://dnagenetics.com/white-widow-cannabis-strain/
  31. https://strngseeds.com/learn/white-widow-strain-guide-effects-growth-secrets-and-what-to-expect/
  32. https://strngseeds.com/learn/how-to-grow-white-widow-complete-beginner-to-pro-guide/
  33. https://www.barneysfarm.com/us/blog/about-white-widow
  34. https://www.amsterdamseedcenter.com/it/blog/classic-cannabis-strains-white-widow
  35. https://www.seed-city.com/guides-insights/the-story-of-white-widow
  36. https://geaseeds.com/blog/en/white-widow-original-seeds/
  37. https://mrnice.com/product/black-widow/
  38. https://premiumseedmarket.com/origins-of-the-white-widow-cannabis-strain/
  39. https://www.hscrew.ch/en/blogs/history-of-genetics/origin-of-white-widow-by-shantibaba
  40. https://grokipedia.com/page/white_widow_cannabis
  41. https://theweedprof.com/strains/white-widow-strain-review/
  42. https://app.jointcommerce.com/blog/category/cannabis-101/white-widow-by-high-quality-seeds-a-comprehensive-strain-guide/
  43. https://cannabiscupwinners.com/blog/1995/11/23/1995-cannabis-cup/
  44. https://seedfinder.eu/en/database/cup-winner/high-times-cannabis-cup/1995
  45. https://seedfinder.eu/en/strain-info/white-widow/lineage-genetics
  46. https://seedfinder.eu/index.php/en/strain-info/white-widow/de-sjamaan
  47. https://www.royalqueenseeds.com/us/content/264-how-to-grow-white-widow-auto
  48. https://softsecrets.com/es-419/articulo/winners-highlife-cup-2017
  49. https://softsecrets.com/nl/artikel/winnaars-highlife-cup-2014

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