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Supergirl Auto
High-potency indica autoflower with relaxed and sleepy effects and short stocky growth and heavy trichomes. Ideal for intermediate growers seeking potency and reliable yields.
βFlavor:Pine, kush, dark berry
Grower tip: Stick to low-stress training only on auto indicas
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About Supergirl Auto
The most common mistake growers make with Supergirl is underestimating how dense the flower structure gets in weeks 6-8, leading to humidity problems inside the buds when airflow is inadequate. This is a strain that demands attention to canopy airflow in late flower, not because it is fragile, but because the dense ${indica}/${sativa} structure traps moisture if you do not proactively manage it. At 26% THC with myrcene-dominant terpenes, the quality ceiling is high, but you have to manage the specific characteristics of this cultivar to reach it.
Growing This Strain: Where Things Go Right and Wrong
The three most common issues growers report with Supergirl:
1. Nutrient timing at the flip. This cultivar shifts its feeding demand faster than many strains at the veg-to-flower transition. Growers who continue high-nitrogen veg feed for more than 5-7 days after the 12/12 switch see excess foliage development at the expense of bud formation. Switch to bloom nutrients within the first week of seeing pistils.
2. Late-flower humidity. The dense flower structure means interior humidity can spike even when ambient RH is acceptable. Defoliate strategically at the start of week 3 of flower to open airflow paths, and keep oscillating fans moving air through (not just above) the canopy.
3. Harvest timing. With myrcene as the dominant terpene, the aromatic peak does not align perfectly with the trichome maturity peak. Growers chasing maximum terpene expression should harvest at 10-15% amber. Growers prioritizing potency should wait for 15-20% amber. These are different windows, know which one you are targeting.
Flowering: 50-60 days. Yield: up to 550 g/m2 indoor / up to 400 g/plant outdoor. Height: 70β110 cm. Difficulty: intermediate.
Effects and Use
At 26% THC, Supergirl delivers relaxed, sleepy, happy effects with a myrcene-influenced character. The onset is body-first, a warmth that starts in the chest and settles into the limbs over 5-10 minutes. At moderate doses, you remain conversational and present. At higher doses, the physical weight becomes dominant and evening use becomes the natural fit. The myrcene dominance adds depth and sedative potential, especially at higher doses.
Terpene Profile
Dominant terpenes: Myrcene (primary), Caryophyllene (secondary), Linalool (tertiary). This combination produces a nose that develops complexity through the cure, expect the primary myrcene character to emerge first, with caryophyllene and linalool notes adding layers over 3-4 weeks in jars.
Who Should Grow Supergirl
Best suited for growers who value speed and simplicity, autoflowering genetics mean no light schedule changes, compact plants, and harvest in 10-12 weeks from seed. The intermediate difficulty rating means basic growing competence is sufficient, but attention to detail during flower produces noticeably better results.
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Supergirl Strain Review
Want the full breakdown of effects, lineage, terpene profile, and a complete grow guide? Read our in-depth Supergirl strain review.
Supergirl Auto, Cannabinoid & Terpene Reference
Reference ranges aggregated from breeder documentation and catalog specifications. Total THC reported as max-potential (THC + 0.877 Γ THCA). Individual seed-lot expression may vary by 1-3 percent.
- Total THC
- 25.6%
- CBD
- 0.16%
- Top Terpenes
- Myrcene, Pinene, Caryophyllene
Supergirl Auto, Aggregated Grower Yield Reports
Yield ranges aggregated from public grower journals, breeder-documented spec sheets, and cultivation community reports on Supergirl Auto autoflower seeds. First-time growers should expect 70-85 percent of these numbers.
| Setup | Yield |
|---|---|
| 4Γ4 tent, 1000W HPS, SCROG | 126g |
| 5Γ5 tent, 1000W HPS, ScrOG + topping | 126g |
Supergirl Auto, Sourcing & Genetics
- Release Era
- Modern stabilized line
- Parent Genetics
- Skunk #1 Backcross
- Lineage Notes
- Leafly documents that "Nirvana Seeds created Supergirl by backcrossing the famous Skunk #1 and focusing on the indica characteristics of that strain's genetics," and its genetics diagram lists Skunk #1 as the sole parent. No second parent is documented, as the strain is a female backcross rather than a two-way cross.
- Recommended US Climate
- Versatile across all US climates, 8-10 week cycle works in any growing window from Maine to Hawaii.