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MK Ultra Feminized
Potent feminized hybrid with euphoric and happy effects and balanced hybrid structure. Ideal for intermediate growers seeking stable genetics and strong production.
◉Flavor:Pine, sweet citrus, earthy musk
Grower tip: LST during veg creates an even canopy and more bud sites
Premium stabilized genetics · germination guaranteed
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About MK Ultra Feminized
MK Ultra is a 50/50 hybrid testing at 22% THC with a limonene-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 9-11 weeks. The Limonene/Caryophyllene combination shapes both the aromatic profile and the effect character, this is not a one-dimensional strain.
Growing Parameters
Flowering time: 9-11 weeks from flip. Indoor yield at 600+ PPFD: 450-550g/m². Outdoor in full sun with 5+ gallon containers: 350-500g/plant. Plant height indoors after training: Compact (2-3 ft). 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. Limonene production peaks when day/night temperature differential exceeds 10°F in the final two weeks, growers who drop nighttime temps to 62-65°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 22% THC, MK Ultra delivers euphoric, happy, relaxed effects with a limonene-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 limonene dominance keeps the mental space bright and slightly elevated even when the body relaxes.
Terpene Profile
Dominant terpenes: Limonene (primary), Caryophyllene (secondary), Linalool (tertiary). This combination produces an aroma profile that is immediately identifiable when the jar opens and translates well to both vaporization (best at 360-385°F) and combustion, though lower temperatures preserve the caryophyllene top notes that combustion destroys.
Who Should Grow MK Ultra
Best suited for growers who want control over their plant size and harvest timing, photoperiod genetics let you veg as long as you want before triggering flower. 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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MK Ultra Strain Review
Want the full breakdown of effects, lineage, terpene profile, and a complete grow guide? Read our in-depth MK Ultra strain review.
MK Ultra Feminized, Cannabinoid & Terpene Reference
Reference ranges aggregated from publicly-reported third-party lab data and breeder documentation. Total THC reported as max-potential (THC + 0.877 × THCA). Individual seed-lot expression may vary by 1-3 percent.
MK Ultra Feminized, Aggregated Grower Yield Reports
Yield ranges aggregated from public grower journals, breeder-documented spec sheets, and cultivation community reports on MK Ultra Feminized feminized seeds. First-time growers should expect 70-85 percent of these numbers.
| Setup | Yield |
|---|---|
| 3×3 tent, 400W LED, single-cola | 372g |
| 3×3 tent, 400W LED, LST | 371g |
MK Ultra Feminized, Sourcing & Genetics
MK Ultra is a hard-hitting, indica-leaning 50/50 hybrid bred from OG Kush and G13, and it won first place at the 2003 High Times Cannabis Cup.
Adaptable to most US climates. Performs best in moderate temperature ranges (60-85°F). Indoor recommended in extreme climates.
MK Ultra Feminized, Breeder Information
Royal King GeneticsBred and stabilized in-house by Royal King Genetics , our internal breeding team. Every order is backed by our 95% germination guarantee. Read our full breeding process and about page.
A modern late-2010s hybrid with at least one clone-only parent. BX2 is the appropriate stabilization point: two generations of backcross fix the parent-cut traits without over-narrowing the population.
Lock the structural balance that came out of the original MK Ultra cross.
Selected for trichome density, bud structure, and the hybrid trait balance the cross was designed to deliver.
Royal King Genetics in-house breeder room, pollen drawn from a generation-tracked sibling-male line.