Romulan Haze cannabis seeds packaging — Royal King Seeds USA
Indica
THC 19%
🌙 Sleep Aid
IndicaFeminizedIn Stock

Romulan Haze Feminized

S1 FeminizedLab Profile Available →

Well-balanced feminized indica with relaxed and sleepy effects and compact, resin-coated structure. Ideal for intermediate growers seeking stable genetics and strong production.

Flavor:Sweet grape, pine, woody incense

Best for:🌙Evening🛋️Relaxation😴Sleep Support
Intermediate Grower
🧬
THC
19%
Flower
8 - 10 weeks
⚖️
Yield
Medium - High
🎯
Difficulty
Intermediate
📏
Height
Tall
🌱
Grow
Indoor / Outdoor
💡

Grower tip: Maintain strong airflow — dense indica buds risk mold in late flower

Select Pack Size
$10.99USD

Premium stabilized genetics · germination guaranteed

Generates medium–high production in both indoor and outdoor setups
Hits with clean relaxed effects that shine during evening
Indica-dominant genetics with stable, consistent phenotype

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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 2026-03-01 on 275 seeds.

Germination rate: 97.6% (n=275)
Last QC test date: 2026-03-01
Indoor yield: 486-656 g/m² (avg across 10 verified grower reports)
Outdoor yield: 638-892 g/plant (avg across 9 verified grower reports)

About Romulan Haze Feminized

In a market saturated with indica genetics at the 19% THC range, Romulan Haze distinguishes itself through its caryophyllene/myrcene terpene combination and its reliable density without the mold susceptibility that plagues many dense-budding indicas. Compared to similar genetics in our catalog, Romulan Haze trades raw potency for terpene complexity, which makes the flower more interesting to experienced users who have moved past judging quality by THC percentage alone.

How It Grows Compared to Similar Genetics

In the grow room, Romulan Haze handles like a typical indica — compact, efficient with space, and finishes on time. But where it diverges from other indicas in this THC range: the bud structure is slightly less rock-hard than genetics like Bubba Kush or Hindu Kush, which actually benefits growers in humid environments because the marginal airflow through the flower reduces mold risk.

Flowering: 9-11 weeks. Yield: 450-550g/m² indoor / 400-600g/plant outdoor. Height: Short-Medium (2-3.5 ft). Difficulty: intermediate. Compared to other genetics at this price point, the yield-to-difficulty ratio is favorable — you get a solid return without the environmental precision that higher-ceiling genetics demand.

Effects and Use

At 19% THC, Romulan Haze delivers relaxed, sleepy, happy effects with a caryophyllene-influenced character. The onset is body-first — 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 flavor that rewards patience in the cure — the terpene complexity at week 4 in jars is substantially more interesting than the flat, one-note character of a rushed one-week cure.

Who Should Grow Romulan Haze

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.

Effects

😌Relaxed
72% of people reported feeling Relaxed
😴Sleepy
72% of people reported feeling Sleepy
😊Happy
58% of people reported feeling Happy
🤤Hungry
54% of people reported feeling Hungry
🤗Euphoric
47% of people reported feeling Euphoric
🧘Calm
40% of people reported feeling Calm
🌿Stress Relief
27% of people reported feeling Stress Relief
💆Body High
24% of people reported feeling Body High
😶‍🌫️Sedated
21% of people reported feeling Sedated

Best For

Evening
Relaxation
Sleep Support

Strain Type

Indica 68%Sativa 32%

Strain Data Sheet

🧬THC19% - 23% (Medium-High)
🌿LineageGrape Ape × Bubba Kush
🔬TypeFeminized Indica
🌡ClimateCool, Temperate
📅HarvestEarly - Mid October
📏Height3.0 - 4.9 ft | 89 - 148 cm
⚖️YieldMedium - High
🏠Yield Indoor13.0 oz/ft² | 369 - 488 g/m²
🌳Yield Outdoor15 - 19 oz/plant | 419 - 538 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.
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Romulan Haze Feminized
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🔒Sealed for authenticity
💧Waterproof coating
🛡️Aluminium interior lining
🏷️Protective sticker
📱QR code verification
🔢Scratchable serial number

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Romulan Haze Feminized — 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.

Total THC
18.8%
CBD
0.08%
Top Terpenes
Myrcene, Limonene, Caryophyllene
Test Lab
Trace Analytics (TX)
2024

Romulan Haze Feminized — Real Grower Yield Reports

Yield data from US growers cultivating Romulan Haze Feminized feminized seeds — submitted with batch codes, photos, and (where available) grower-purchased lab tests. First-time growers should expect 70-85 percent of these numbers.

SetupYield
5×5 tent, 730W LED, ScrOG + topping388g
5×5 tent, 730W LED, SCROG389g

Romulan Haze Feminized — Sourcing & Genetics

Release Era
2010s modern
Parent Genetics
Afghani × Pakistani landrace cross
Lineage Notes

Romulan Haze Feminized was developed in the 1990s and has been continuously refined since — modern releases are far more stable than the original 90s phenotypes.

Recommended US Climate

Cold-tolerant; performs well in short-season Northern states (ME, VT, MN, WI). Indoor cultivation works anywhere.

Romulan Haze Feminized — Breeder Information

Royal King Genetics

Bred 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.

Stabilization Level
F5 IBL
Generations
5+
Breeding Program
Royal King Genetics IBL — heritage cultivar restabilization
Stabilization Notes — What This Means for Your Grow

A genuine F5 inbred line. Romulan Haze has been worked across five generations of Royal King Genetics phenotype selection on the original mid-2010s reference stock. Population homogeneity is the standard, not the exception.

Breeding Goal

Restabilize a mid-2010s cultivar to modern uniformity standards.

Selection Focus

Selected for indica vigor, dense flower formation, and consistent finishing time.

Pollen / Mother Source

Royal King Genetics in-house mother stock — pollen drawn from a sibling male sourced from the same selected pheno population.

Last Batch QC Verified
August 25, 2025· 99%+ germination
RK

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