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Night Train Auto
Well-balanced hybrid autoflower with relaxed and happy effects and vigorous hybrid bud production. Ideal for intermediate growers seeking potency and reliable yields.
◉Flavor:Cherry, cream, hints of fuel
Grower tip: Use a smart pot from seed — no transplant shock
Premium stabilized genetics · germination guaranteed
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Royal King Genetics — first-party test batch
Numbers below are from our internal seed-lot QC and verified grower submissions, not breeder marketing. Determined from a single batch tested 2026-04-24 on 375 seeds.
About Night Train Auto
The genetic expression of Night Train — a 54/46 hybrid — varies meaningfully across phenotypes. Most seeds from this line produce the dominant phenotype: a moderate frame that branches well and produces evenly developed colas with a mix of density and airflow. But expect variation — roughly 1 in 4 plants will lean more strongly in one parental direction, which is part of what makes pheno-hunting this strain interesting. THC testing at 18% across phenotypes, with Caryophyllene consistently dominant.
Genetic Expression in the Grow Room
The dominant phenotype — which appears in roughly 70-75% of seeds — produces a balanced frame that takes to training intuitively. The branching pattern suggests hybrid vigor — aggressive enough to fill space without becoming unmanageable. Flower structure falls between dense and airy, which provides a good balance of bag appeal and mold resistance.
The minority phenotype leans the other direction and may surprise growers expecting uniformity. Flowering completes in 8-10 weeks across phenotypes. Yield: 400-500g/m² indoor, 400-600g/plant outdoor. Height: Short-Medium (2-3.5 ft). Rated intermediate — the phenotype variation adds a layer of interest without adding significant difficulty. Growing from regular seeds with autoflowering genetics.
Effects and Use
At 18% THC, Night Train delivers relaxed, happy, euphoric effects with a caryophyllene-influenced character. The onset is balanced — head and body arrive together and remain proportional throughout a 2-3 hour duration. This makes the strain adaptable to different situations depending on dose. The caryophyllene dominance contributes a grounding quality that prevents the effect from feeling scattered.
Terpene Profile
Dominant terpenes: Caryophyllene (primary), Limonene (secondary), Myrcene (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 Night Train
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. Ships discreetly to all 50 US states with our germination guarantee.
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Night Train 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.
Night Train Auto — Real Grower Yield Reports
Yield data from US growers cultivating Night Train 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 |
|---|---|
| 5×5 tent, 730W LED, ScrOG + topping | 247g |
| Outdoor, 25-gal fabric pot, full sun | 357g |
Night Train Auto — Sourcing & Genetics
Night Train Auto traces its lineage back to landrace genetics from Asia and was modernized through North American breeders selecting for terpene complexity.
Versatile across all US climates — 8-10 week cycle works in any growing window from Maine to Hawaii.
Night Train 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.
Night Train is an autoflowering line that has been worked through five generations of Royal King Genetics autoflower stabilization. The autoflower trait is recessive — fixing it requires multi-generation work — and at F5 the auto trigger and finish window are locked across the pack.
Reach auto trigger and finish-window uniformity for the Night Train pack.
Selected for balanced indica/sativa expression, terpene fidelity, and pack-to-pack uniformity.
Royal King Genetics elite-cut archive — pollen from a maintained S1 line of the original elite mother.