Runtz Auto by Zamnesia

Runtz Auto strain photo
Type 50% sativa / 50% indica · autoFlower ±67 daysTHC 23%Cross Runtz × Ruderalis

2 other breeders' versions of Runtz Auto — compare flowering times side by side →

Runtz Auto lands on the autoflowering side of the spectrum, Zamnesia's take on the Runtz × Ruderalis line. Indoors it typically finishes flowering in around 67 days from sprout. Reported THC is 23%. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Runtz Auto grows against.

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Similar strains

White Monster AutomaticZamnesia · ±71 daysZamnesia - Blueberry AutomaticZamnesiaAK-420 AutomaticZamnesia · ±63 daysJack Herer AutomaticZamnesia · ±70 daysNorthern Lights AutomaticZamnesia · ±63 daysCBD Fix AutoZamnesia · ±70 daysAK-020Amsterdam Genetics · ±67 daysCustom XPure Seeds · ±65 daysDO-GRipper Seeds · ±65 daysEl CidAll Star Genetics · ±70 daysThunderbudHoly Smoke Seeds · ±63 daysWhite ChocoAmsterdam Genetics · ±63 daysAll Zamnesia →
BreederZamnesia
Type50% sativa / 50% indica
Flowering time±67 days
THC23%
EnvironmentOutdoors
LineageRuntz × Ruderalis

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Autoflower note: runs on age, not light schedule — see the week-by-week autoflower schedule.

🧬 Explore the family: Runtz · Ruderalis

Ancestry Pedigree

Runtz
Zamnesia
Runtz
Apothecary Genetics
Zkittlez
Dying Breed Seeds
Grape Ape
Apothecary Genetics
Grand Daddy Purple
Unknown or Legendary
Skunk
Unknown or Legendary
Skunk Nr1
Cultivators Choice
Afghanistan Indica
Original Strains
Mexico Sativa
Original Strains
Colombia Sativa
Original Strains
Mendo Purps
Unknown or Legendary
USA Mostly Indica
Original Strains
Unknown Strain
Original Strains
Gelato
Unknown or Legendary
Sunset Sherbert
Unknown or Legendary
Girl Scout Cookies
Clone Only Strains
Pink Panties
Unknown or Legendary
OG Kush
Clone Only Strains
Thailand Sativa
Original Strains
Chem Dawg
Unknown or Legendary
Indica
Original Strains
OG Kush
Clone Only Strains
Girl Scout Cookies
Clone Only Strains
F1 Durban
Unknown or Legendary
Cherry Pie Kush
Unknown or Legendary
Durban Poison
Dutch Passion
Africa Sativa
Original Strains
Chem Dawg
Unknown or Legendary
OG Kush
Clone Only Strains
Ruderalis
Original Strains

Growing Runtz Auto: what to expect

Because Runtz Auto 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 Runtz 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.

Runtz Auto FAQ

How long does Runtz Auto take to flower?

Runtz Auto typically flowers in around 67 days from sprout (autoflower — no light-schedule flip needed). Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.

Is Runtz Auto an indica or a sativa?

Runtz Auto is listed as 50% sativa / 50% indica (autoflowering).

What are the parents of Runtz Auto?

Runtz Auto was bred from Runtz × Ruderalis by Zamnesia.

How strong is Runtz Auto?

Reported THC for Runtz Auto is 23%. Actual potency depends heavily on environment, harvest ripeness, and cure quality.

What environment does Runtz Auto 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 Runtz Auto? A structured journal — with your feedings, readings, and photos — is how you find what THIS cut actually wants.

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Published by Cultivar (logmygrow.com), a structured grow journal. These reference bands are the same ones the app grades real grows against. Free to cite with a link. Some outbound product links are affiliate links — see disclosures.