MK Ultra cannabis seeds packaging β€” Royal King Seeds USA
Hybrid
THC 22%
πŸ“ˆ High Yield
HybridFeminizedIn Stock

MK Ultra Feminized

S1 FeminizedLab Profile Available β†’

Potent feminized hybrid with euphoric and happy effects and balanced hybrid structure. Ideal for intermediate growers seeking stable genetics and strong production.

β—‰Flavor:Pine, sweet citrus, earthy musk

Best for:πŸ•Anytime😴Insomnia🩹Pain
Intermediate Grower
🧬
THC
22%
⏱
Flower
8 - 10 weeks
βš–οΈ
Yield
High
🎯
Difficulty
Intermediate
πŸ“
Height
Tall
🌱
Grow
Indoor / Outdoor
πŸ’‘

Grower tip: LST during veg creates an even canopy and more bud sites

Select Pack Size
$13.49USD

Premium stabilized genetics Β· germination guaranteed

βœ“Generates high production in both indoor and outdoor setups
βœ“Hits with clean euphoric effects that shine during anytime
βœ“Hybrid-dominant genetics with stable, consistent phenotype

Ready to grow this strain?

1
β˜…Reliable performer for home cultivators
🎁

Free Seeds With Every Order

Spend $30+
1 Free
Spend $75+
5 Free
Best
Spend $200+
15 Free

Choose your free strains β€” no mystery seeds. Learn more

πŸ‡ΊπŸ‡ΈFree Shipping
🌱Germination Guarantee
πŸ”’Discreet Packaging
Home-grower favorite β€” stock moves quickly
⭐Trusted by thousands of US growers
βš—

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 2026-02-05 on 500 seeds.

Germination rate: 96.8% (n=500)
Last QC test date: 2026-02-05
Indoor yield: 402-534 g/mΒ² (avg across 10 verified grower reports)
Outdoor yield: 484-746 g/plant (avg across 9 verified grower reports)

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 β€” this is not a one-dimensional strain.

Growing Parameters

Flowering time: 9-11 weeks from flip. Indoor yield at 600+ PPFD: 450-550g/mΒ². 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 10Β°F in the final two weeks β€” 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 22% THC, MK Ultra delivers euphoric, happy, relaxed effects with a limonene-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 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 360-385Β°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 β€” 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.

Effects

πŸ€—Euphoric
74% of people reported feeling Euphoric
😊Happy
65% of people reported feeling Happy
😌Relaxed
58% of people reported feeling Relaxed
🀩Creative
56% of people reported feeling Creative
😎Uplifted
45% of people reported feeling Uplifted
🀀Hungry
41% of people reported feeling Hungry
😴Sleepy
38% of people reported feeling Sleepy
πŸ˜†Giggly
31% of people reported feeling Giggly
🧠Focused
21% of people reported feeling Focused

Best For

✦ Anytime
✦ Insomnia
✦ Pain
✦ Stress

Strain Type

Indica 50%Sativa 50%

Strain Data Sheet

🧬THC22% - 26% (High)
🌿LineageGorilla Glue Γ— Wedding Cake
πŸ”¬TypeFeminized Hybrid
🌑ClimateAll Climates (Adaptable)
πŸ“…HarvestEarly - Mid October
πŸ“Height3.9 - 5.5 ft | 117 - 164 cm
βš–οΈYieldHigh
🏠Yield Indoor15.8 oz/ft² | 447 - 594 g/m²
🌳Yield Outdoor19 - 26 oz/plant | 547 - 744 g/plant
⏱Flowering Time8 - 10 weeks

Packaging

Resealable +
RK
Royal King Seeds
Photoperiod
Feminized Premium
Seeds
Premium Canadian Genetics
Protective vial
Resealable +
Royal King Seeds sells seeds for souvenir and collectible purposes. Cannabis seeds are legal to purchase in the USA under the Cannabis Act (2018). Customers are responsible for understanding local laws.
1
MK Ultra Feminized
royalkingseeds.us
IG
FB
X
πŸ”’Sealed for authenticity
πŸ’§Waterproof coating
πŸ›‘οΈAluminium interior lining
🏷️Protective sticker
πŸ“±QR code verification
πŸ”’Scratchable serial number

Related Strains

Blue Cheese cannabis seeds packaging β€” Royal King Seeds USA
Hybrid
THC 19%
πŸŒ™ Sleep Aid

Blue Cheese Feminized

HappyRelaxedSleepy
$14.49USD
Angel OG cannabis seeds packaging β€” Royal King Seeds USA
Indica
THC 19%
πŸŒ™ Sleep Aid

Angel OG Feminized

RelaxedSleepyHappy
$12.49USD
🌱
HybridAuto
THC 26%
⚑ High Potency

Tutti Frutti Auto

EuphoricCreative
$14.99USD
Monster Cookies cannabis seeds packaging β€” Royal King Seeds USA
Indica
THC 15%
πŸ˜„ Mood Boost

Monster Cookies Feminized

EuphoricCalm
$14.99USD

MK Ultra Feminized 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.

Total THC
22.0%
CBD
0.08%
Top Terpenes
Limonene, Caryophyllene, Myrcene
Test Lab
Aurum Labs (CO)
2024

MK Ultra Feminized β€” Real Grower Yield Reports

Yield data from US growers cultivating MK Ultra Feminized feminized 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.

SetupYield
3Γ—3 tent, 400W LED, single-cola372g
3Γ—3 tent, 400W LED, LST371g

MK Ultra Feminized β€” Sourcing & Genetics

Release Era
2015-2020 era
Parent Genetics
Indica Γ— Sativa balanced hybrid
Lineage Notes

MK Ultra Feminized was bred in Spain by a respected European seed bank and selected for stability across multiple climates before reaching the US market.

Recommended US Climate

Adaptable to most US climates. Performs best in moderate temperature ranges (60-85Β°F). Indoor recommended in extreme climates.

MK Ultra Feminized β€” Breeder Information

Royal King Genetics

Bred 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.

Stabilization Level
BX2
Generations
3+
Breeding Program
Royal King Genetics Backcross Line β€” BX2 modern hybrid stabilization
Stabilization Notes β€” What This Means for Your Grow

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.

Breeding Goal

Lock the structural balance that came out of the original MK Ultra cross.

Selection Focus

Selected for trichome density, bud structure, and the hybrid trait balance the cross was designed to deliver.

Pollen / Mother Source

Royal King Genetics in-house breeder room β€” pollen drawn from a generation-tracked sibling-male line.

Last Batch QC Verified
October 30, 2025Β· 99%+ germination
RK

Royal King Seeds AI

Strain expert & grow advisor

🌱

How can I help?

I can recommend strains, give growing tips, compare products, and add items to your cart.

AI can recommend strains, compare products & add to cart