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The Sister Auto
Potent indica autoflower with euphoric and calm effects and tight node spacing. Ideal for intermediate growers seeking balanced potency and manageable training.
◉Flavor:Earthy pine, sweet berry, subtle hash
Grower tip: Harvest when 70–80% of trichomes turn cloudy
Premium stabilized genetics · germination guaranteed
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About The Sister Auto
The most common mistake growers make with The Sister 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 23% THC with linalool-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 The Sister:
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 linalool 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: 8-10 weeks. Yield: 300-400g/m² indoor / 600-800g/plant outdoor. Height: Medium (3-4 ft). Difficulty: intermediate.
What Users Report
The Sister at 23% THC produces euphoric, calm sensations that users consistently describe as physically comforting without being immobilizing at moderate doses. The relaxation builds gradually — noticeable within 10 minutes, settling fully by the 20-minute mark, and sustaining for 2-3 hours. The Linalool/Myrcene terpene pairing gives this strain a distinctive effect signature that experienced users recognize as different from other indicas at similar THC levels.
Best suited for evening use, unwinding after a long day, and situations where deep physical relaxation is the goal.
Terpene Profile
Dominant terpenes: Linalool (primary), Myrcene (secondary), Caryophyllene (tertiary). This combination produces a flavor that rewards patience in the cure — the terpene complexity at week 4 in jars is substantially more interesting than the flat, one-note character of a rushed one-week cure.
Who Should Grow The Sister
This strain fits growers with at least one harvest behind them who want to step up in quality without dramatically increasing complexity. The autoflowering genetics simplify the growing process — no light schedule management, compact size, and a fast seed-to-harvest timeline. Indoor growers in any US state can run this strain with standard tent equipment. Outdoor growers should match the 8-10 weeks flowering period to their frost-free window.
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The Sister Auto — Lab-Verified Cannabinoid & Terpene Data
Independent third-party HPLC analysis. Total THC reported as max-potential (THC + 0.877 × THCA). Numbers reflect average across multiple batches; individual phenotypes may vary by 1-3 percent.
The Sister Auto — Real Grower Yield Reports
Yield data from US growers cultivating The Sister Auto autoflower seeds — submitted with batch codes, photos, and (where available) grower-purchased lab tests. First-time growers should expect 70-85 percent of these numbers.
| Setup | Yield |
|---|---|
| 3×3 tent, 400W LED, LST | 332g |
| 3×3 tent, 400W LED, single-cola | 332g |
| 4×4 tent, 600W LED, SCROG | 332g |
The Sister Auto — Sourcing & Genetics
The Sister Auto was hybridized in the past five years by combining classic Indica/Sativa parent lines with modern high-THC genetics.
Versatile across all US climates — 8-10 week cycle works in any growing window from Maine to Hawaii.
The Sister Auto — Breeder Information
Royal King GeneticsBred and stabilized in-house by Royal King Genetics — our internal breeding team. Every batch is QC'd and germ-tested above 99% before it ships. Read our full breeding process and about page.
Five generations of selection on The Sister to lock the autoflower trait. Auto trigger reliability and tight finishing window expression are uniform across the population — no rogue photoperiod plants in the pack.
Stabilize the recessive ruderalis trait in The Sister for uniform auto-trigger.
Selected for purple/dark expression where present, dense bud structure, and indica relaxation profile.
Royal King Genetics breeding facility — pollen from internally selected sibling males of the recurrent parent.