Black Widow Automatic by Zenseeds
Black Widow Automatic is an autoflowering cannabis strain from Zenseeds, bred by crossing Black Widow × Ruderalis. Indoors it typically finishes flowering in around 74 days from sprout. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Black Widow Automatic grows against.
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Similar strains
| Breeder | Zenseeds |
|---|---|
| Type | ruderalis/indica/sativa |
| Flowering time | ±74 days |
| Environment | Outdoors |
| Lineage | Black Widow × Ruderalis |
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Autoflower note: runs on age, not light schedule — see the week-by-week autoflower schedule.
🧬 Explore the family: Black Widow · Ruderalis
Ancestry Pedigree
Mr Nice Seedbank
Green House Seeds
De Sjamaan
Original Strains
Original Strains
Original Strains
Growing Black Widow Automatic: what to expect
Because Black Widow Automatic is an autoflower it runs on age, not photoperiod: keep it under 18–20 hours of light from sprout to harvest, start in its final pot, and go easy on training after week 3 — autos never pause to recover. Growers familiar with Black Widow or Ruderalis will recognize much of its behavior. Whatever the listing says, the cut in YOUR tent is the ground truth: log feedings, readings, and photos, and let the trends — not the label — drive decisions.
Black Widow Automatic FAQ
How long does Black Widow Automatic take to flower?
Black Widow Automatic typically flowers in around 74 days from sprout (autoflower — no light-schedule flip needed). Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Black Widow Automatic an indica or a sativa?
Black Widow Automatic is listed as ruderalis/indica/sativa (autoflowering).
What are the parents of Black Widow Automatic?
Black Widow Automatic was bred from Black Widow × Ruderalis by Zenseeds.
What environment does Black Widow Automatic like?
Standard cannabis bands work well: VPD 0.8–1.1 kPa in veg and 1.0–1.4 kPa in flower, with humidity stepping down from 65–75% as a seedling to 40–50% in late flower. See the stage-by-stage table on this page.
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Facts compiled from public breeder listings. Growing Black Widow Automatic? A structured journal — with your feedings, readings, and photos — is how you find what THIS cut actually wants.
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