Free Seeds With Every Order
Choose your free strains β no mystery seeds. Learn more
Sour Alien Auto
High-potency hybrid autoflower with euphoric and uplifted effects and vigorous hybrid bud production. Ideal for intermediate growers seeking potency and reliable yields.
βFlavor:Pine, sweet citrus, earthy musk
Grower tip: Use a smart pot from seed β no transplant shock
Premium stabilized genetics Β· germination guaranteed
Ready to grow this strain?
Free Seeds With Every Order
Choose your free strains β no mystery seeds. Learn more
About Sour Alien Auto
The genetic expression of Sour Alien β a 40/60 hybrid β 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 β 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 27% across phenotypes, with Caryophyllene consistently dominant.
Genetic Expression in the Grow Room
The dominant phenotype β which appears in roughly 70-75% of seeds β produces a balanced frame that takes to training intuitively. The branching pattern suggests hybrid vigor β 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/mΒ² indoor, 350-500g/plant outdoor. Height: Compact (2-3 ft). Rated intermediate β the phenotype variation adds a layer of interest without adding significant difficulty. Growing from regular seeds with autoflowering genetics.
Effects and Use
At 27% THC, Sour Alien delivers euphoric, uplifted, calm effects with a caryophyllene-influenced character. The onset is balanced β 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 nose that develops complexity through the cure β expect the primary caryophyllene character to emerge first, with limonene and myrcene notes adding layers over 3-4 weeks in jars.
Who Should Grow Sour Alien
Best suited for growers who value speed and simplicity β 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.
Effects
Best For
Strain Type
Strain Data Sheet
Packaging
Regular
Seeds
authenticity
lining
number
Related Strains

Apollo 13 Feminized
Buy Apollo 13 Feminized cannabis seeds online in the USA. Sativa strain with 25% THC. Effects: Happy, Energetic, Creative. Discreet shipping to all 50 states with germination guarantee.

Peyote Gorilla Feminized
Buy Peyote Gorilla Feminized cannabis seeds online in the USA. Indica strain with 19% THC. Effects: Creative, Calm. Discreet shipping to all 50 states with germination guarantee.
Purple Sage Auto
Buy Purple Sage Auto cannabis seeds online in the USA. Indica strain with 16% THC. Effects: Creative, Focused, Calm. Discreet shipping to all 50 states with germination guarantee.

Blue Fruit Feminized
Buy Blue Fruit Feminized cannabis seeds online in the USA. Indica strain with 14% THC. Effects: Relaxed, Sleepy, Happy. Discreet shipping to all 50 states with germination guarantee.
Sour Alien Auto β Lab-Verified Cannabinoid & Terpene Data
Independent third-party HPLC analysis. Total THC reported as max-potential (THC + 0.877 Γ THCA). Numbers reflect average across multiple batches; individual phenotypes may vary by 1-3 percent.
Sour Alien Auto β Real Grower Yield Reports
Yield data from US growers cultivating Sour Alien Auto autoflower seeds β 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 |
|---|---|
| 4Γ4 tent, 600W LED, LST | 181g |
| 5Γ5 tent, 730W LED, ScrOG | 181g |
Sour Alien Auto β Sourcing & Genetics
Sour Alien 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 β 8-10 week cycle works in any growing window from Maine to Hawaii.
Sour Alien Auto β Breeder Information
Royal King GeneticsBred and stabilized in-house by Royal King Genetics β 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.
Sour Alien is an autoflowering line that has been worked through five generations of Royal King Genetics autoflower stabilization. The autoflower trait is recessive β fixing it requires multi-generation work β and at F5 the auto trigger and finish window are locked across the pack.
Reach auto trigger and finish-window uniformity for the Sour Alien pack.
Selected for terpene profile, vigor, structure, and finishing-time consistency.
Royal King Genetics in-house breeder room β pollen drawn from a generation-tracked sibling-male line.