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Magnum Auto
Mellow hybrid autoflower with focused and calm effects and vigorous hybrid bud production. Ideal for intermediate growers seeking potency and reliable yields.
βFlavor:Cherry, cream, hints of fuel
Grower tip: Use a smart pot from seed, no transplant shock
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About Magnum Auto
Magnum is a 49/51 hybrid testing at 15% THC with a caryophyllene-dominant terpene profile. At a practical level, this means a plant that offers moderate stretch with balanced branching that responds well to training, finishing in approximately 85 days (seed to harvest). The Caryophyllene/Limonene combination shapes both the aromatic profile and the effect character, this is not a one-dimensional strain.
Growing Parameters
Flowering time: approximately 85 days (seed to harvest) from flip. Indoor yield at 600+ PPFD: 550-600 g/m2. Outdoor in full sun with 5+ gallon containers: 100-250 g/plant. Plant height indoors after training: Up to 150 cm. Feed EC targets: 1.0-1.4 in veg, 1.4-1.8 in peak flower. pH range: 6.0-6.5 in soil, 5.8-6.2 in coco. Caryophyllene production peaks when day/night temperature differential exceeds 10Β°F in the final two weeks, growers who drop nighttime temps to 62-65Β°F during this window report stronger aromatic development.
This cultivar responds well to topping at the 4th node and moderate defoliation in week 1 and week 3 of flower. SCROG training at a 4x4 grid produces the most uniform canopy distribution. Rated intermediate difficulty.
Effects and Use
At 15% THC, Magnum delivers focused, calm 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 an aroma profile that is immediately identifiable when the jar opens and translates well to both vaporization (best at 360-385Β°F) and combustion, though lower temperatures preserve the limonene top notes that combustion destroys.
Who Should Grow Magnum
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.
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Magnum Strain Review
Want the full breakdown of effects, lineage, terpene profile, and a complete grow guide? Read our in-depth Magnum strain review.
Magnum Auto, Cannabinoid & Terpene Reference
Reference ranges aggregated from breeder documentation and catalog specifications. Total THC reported as max-potential (THC + 0.877 Γ THCA). Individual seed-lot expression may vary by 1-3 percent.
- Total THC
- 14.5%
- CBD
- 0.04%
- Top Terpenes
- Caryophyllene, Limonene, Myrcene
Magnum Auto, Aggregated Grower Yield Reports
Yield ranges aggregated from public grower journals, breeder-documented spec sheets, and cultivation community reports on Magnum Auto autoflower seeds. First-time growers should expect 70-85 percent of these numbers.
| Setup | Yield |
|---|---|
| 4Γ4 tent, 600W LED, top + main-line | 180g |
| 4Γ4 tent, 600W LED, SCROG | 179g |
Magnum Auto, Sourcing & Genetics
- Release Era
- Modern stabilized line
- Parent Genetics
- Autoflowering Hybrid (Undisclosed Lineage)
- Lineage Notes
- The precise parentage of Magnum Auto has not been publicly documented; it is cultivated as an autoflowering hybrid variety selected for its effects and terpene profile.
- Recommended US Climate
- Versatile across all US climates, 8-10 week cycle works in any growing window from Maine to Hawaii.