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Casper OG Auto
Mellow indica autoflower with euphoric and uplifted effects and compact, resin-coated structure. Ideal for intermediate growers seeking stable genetics and strong production.
βFlavor:Chocolate, coffee, earthy sweetness
Grower tip: Minimal training β indicas stay compact naturally
Premium stabilized genetics Β· germination guaranteed
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Free Seeds With Every Order
Choose your free strains β no mystery seeds. Learn more
Royal King Genetics β 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 2026-04-14 on 100 seeds.
About Casper OG Auto
The most common mistake growers make with Casper OG 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 β not because it is fragile, but because the dense ${indica}/${sativa} structure traps moisture if you do not proactively manage it. At 16% THC with caryophyllene-dominant terpenes, the quality ceiling is high β 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 Casper OG:
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 caryophyllene 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 β know which one you are targeting.
Flowering: 8-10 weeks. Yield: 450-550g/mΒ² indoor / 400-600g/plant outdoor. Height: Short-Medium (2-3.5 ft). Difficulty: intermediate.
Effects and Use
At 16% THC, Casper OG delivers euphoric, uplifted, calm effects with a caryophyllene-influenced character. The onset is body-first β 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 caryophyllene dominance contributes a grounding quality that prevents the effect from feeling scattered.
Terpene Profile
Dominant terpenes: Caryophyllene (primary), Myrcene (secondary), Bisabolol (tertiary). This combination produces a nose that develops complexity through the cure β expect the primary caryophyllene character to emerge first, with myrcene and bisabolol notes adding layers over 3-4 weeks in jars.
Who Should Grow Casper OG
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.
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Casper OG 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.
Casper OG Auto β Real Grower Yield Reports
Yield data from US growers cultivating Casper OG 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 |
|---|---|
| Outdoor, 15-gal fabric pot, partial shade | 212g |
| Outdoor, raised bed, full sun | 212g |
Casper OG Auto β Sourcing & Genetics
Casper OG Auto was bred in Spain by a respected European seed bank and selected for stability across multiple climates before reaching the US market.
Versatile across all US climates β 8-10 week cycle works in any growing window from Maine to Hawaii.
Casper OG 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.
Casper OG 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 Casper OG pack.
Selected for indica vigor, dense flower formation, and consistent finishing time.
Royal King Genetics in-house mother stock β pollen drawn from a sibling male sourced from the same selected pheno population.