Free Seeds With Every Order
Choose your free strains — no mystery seeds. Learn more
Blue Ox Auto
High-potency indica autoflower with euphoric and calm effects and tight node spacing. Ideal for intermediate growers seeking balanced potency and manageable training.
◉Flavor:Blueberry, vanilla, warm spice
Grower tip: Harvest when 70–80% of trichomes turn cloudy
Premium stabilized genetics · germination guaranteed
Ready to grow this strain?
Free Seeds With Every Order
Choose your free strains — no mystery seeds. Learn more
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 2026-02-12 on 500 seeds.
About Blue Ox Auto
The genetic expression of Blue Ox — a 67/33 indica — varies meaningfully across phenotypes. Most seeds from this line produce the dominant phenotype: a compact, bushy plant with broad fan leaves and golf-ball-dense flowers that pack on weight in the final two weeks. But expect variation — roughly 1 in 4 plants will lean slightly more toward the sativa parent, showing more stretch and airier flower structure. THC testing at 25% across phenotypes, with Linalool consistently dominant.
Genetic Expression in the Grow Room
The dominant phenotype — which appears in roughly 70-75% of seeds — produces a compact, symmetrical plant with broad internodes and heavy lateral branching. Fan leaves are wide and dark green, typical of the indica heritage. Flower clusters form tight, round colas that pack on weight noticeably in the final 10 days before harvest.
The minority phenotype leans the other direction and may surprise growers expecting uniformity. Flowering completes in 8-10 weeks across phenotypes. Yield: 300-400g/m² indoor, 600-800g/plant outdoor. Height: Medium (3-4 ft). Rated intermediate — the phenotype variation adds a layer of interest without adding significant difficulty. Growing from regular seeds with autoflowering genetics.
What Users Report
Blue Ox at 25% 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 nose that develops complexity through the cure — expect the primary linalool character to emerge first, with myrcene and caryophyllene notes adding layers over 3-4 weeks in jars.
Who Should Grow Blue Ox
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.
Effects
Best For
Strain Type
Strain Data Sheet
Packaging
Regular
Seeds
authenticity
lining
number
Related Strains

Blue Cheese Feminized
Buy Blue Cheese Feminized cannabis seeds online in the USA. Hybrid strain with 19% THC. Effects: Happy, Relaxed, Sleepy. Discreet shipping to all 50 states with germination guarantee.

Angel OG Feminized
Buy Angel OG Feminized cannabis seeds online in the USA. Indica strain with 19% THC. Effects: Relaxed, Sleepy, Happy. Discreet shipping to all 50 states with germination guarantee.
Tutti Frutti Auto
Buy Tutti Frutti Auto cannabis seeds online in the USA. Hybrid strain with 26% THC. Effects: Euphoric, Creative. Discreet shipping to all 50 states with germination guarantee.

Monster Cookies Feminized
Buy Monster Cookies Feminized cannabis seeds online in the USA. Indica strain with 15% THC. Effects: Euphoric, Calm. Discreet shipping to all 50 states with germination guarantee.
Blue Ox 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.
Blue Ox Auto — Real Grower Yield Reports
Yield data from US growers cultivating Blue Ox 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 |
|---|---|
| Outdoor, balcony, 5-gal fabric pot | 322g |
| 3×3 tent, 400W LED, single-cola | 214g |
| 4×4 tent, 600W LED, SCROG | 215g |
Blue Ox Auto — Sourcing & Genetics
Blue Ox Auto is a modern stabilized hybrid developed through 5+ generations of phenotype hunting in Colorado and Oregon legal grow operations.
Versatile across all US climates — 8-10 week cycle works in any growing window from Maine to Hawaii.
Blue Ox 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.
Blue Ox is our F5 autoflower line. Five generations of selection have fixed both the autoflower trigger and the trichome saturation the cultivar is known for. The recessive ruderalis trait requires this depth of work to express uniformly.
Stabilize the recessive ruderalis trait in Blue Ox for uniform auto-trigger.
Selected for indica vigor, dense flower formation, and consistent finishing time.
Royal King Genetics breeding facility — pollen from internally selected sibling males of the recurrent parent.