Black Widow
Hybrid9 listings from 8 seed banksBred by Landrace Genetics Seedsprices checked Nov 5
- THC
- 26–28%
- Flowering
- 49–70 days
- 30-day price
- no change
Offers for Black Widow
“est.” adds a typical $11.00 shipping cost when the bank does not publish a rate. Some links are affiliate links. How prices and rankings work
Price history: 30 observed days, 2026-10-07 to 2026-11-05 (UTC). Lowest recorded: $2.86/seed, before shipping and coupon codes. Gaps mean no in-stock price was recorded.
Genetics
Full tree →Reported parents: Brazilian Sativa landrace × Cannatonic × South Indian Indica. The parent order is not recorded. Sources
Grow specs
- Yield indoors
- 336–448 g/m²
- Yield outdoors
- 308–392 g/plant
- Height
- Tall
- Difficulty
- Easy (fine for a first grow)
- Grows
- Indoors or out
Reported in catalog and seed-bank records; not independently tested. Yields are the breeder's figures under their conditions, not a promise.
Harvest timing
Harvest 49–70 days after the flip to 12/12.
From seed with a 6-week veg, about 13–16 weeks. Autoflower versions run on their own clock, usually 10 to 12 weeks from seed.
Plan a Black Widow grow in the harvest calculator →About Black Widow
This strain is a sister of the famous strain White Widow developed by the talented breeder Shantibaba who retooled the genetics of White Widow when he left Green House Seeds and began working with Mr. Nice Seeds.
Because Shantibaba is the true father of this strain as well as the only one to know the precise heritage of this world renowned strain, Black Widow is considered the 'true' variety of White Widow.
This strain definitely deserves the title, as its potency regularly tests above 26% THC and its powerful effect is rumored to be incredibly sedative, relaxing, and full of laughter.
Since this strain is so incredibly potent, it is often too much for novice or low-tolerance cannabis users, but Black Widow is perfectly suited for those who are looking for tremendous pain and stress relief.
Data & sources
Growing details and parentage reflect catalog and seed-bank records. They are not independent grow tests or lab results. How we use these records.
The description comes from Leafist's earlier strain catalog; its original source is not recorded.
Reported parent sources
Confidence scores describe our extraction and name matching, not a genetic percentage or independent verification. Method.
- Brazilian Sativa landrace
- Cannatonic
- South Indian Indica
Seed-bank records (9)
- Attitude Seedbank USA: Mr. Nice Seeds Black Widow
- Crop King Seeds: Black Widow Strain Autoflowering Marijuana Seeds
- Crop King Seeds: Black Widow Feminized Marijuana Seeds
- Herbies Seeds: Black Widow
- ILGM: Black Widow Seeds
- North Atlantic Seed Co: Black Widow (F)
- Premium Cultivars: Black Widow Seeds
- SeedSupreme: Black Widow Feminized Seeds
- Seedsman: Black Widow Regular Seeds - 18
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