White Nightmare cannabis seeds packaging β€” Royal King Seeds USA
SativaAuto
THC 18%
😊 Beginner Pick
SativaAutoflowerIn Stock

White Nightmare Auto

Auto F3Lab Profile Available β†’

Well-balanced sativa autoflower with happy and relaxed effects and extended stretch and airy colas. Ideal for intermediate growers seeking potency and reliable yields.

β—‰Flavor:Grapefruit, lime, floral pine

Best for:πŸ•Anytime🌀️Depression🩹Pain
Intermediate Grower
🧬
THC
18%
⏱
Flower
8 - 10 weeks
βš–οΈ
Yield
High
🎯
Difficulty
Intermediate
πŸ“
Height
Medium
🌱
Grow
Indoor / Outdoor
πŸ’‘

Grower tip: Keep veg short and let the plant finish its auto cycle naturally

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$14.99USD

Premium stabilized genetics Β· germination guaranteed

βœ“Produces high yields with proper training and spacing
βœ“Brings pronounced happy effects tailored for anytime
βœ“Stabilized sativa genetics delivering predictable results

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In high demand β€” restocked regularly
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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 2026-03-31 on 125 seeds.

Germination rate: 99.1% (n=125)
Last QC test date: 2026-03-31
Indoor yield: 392-532 g/mΒ² (avg across 12 verified grower reports)
Outdoor yield: 526-858 g/plant (avg across 7 verified grower reports)

About White Nightmare Auto

White Nightmare is a 20/70 sativa testing at 18% THC with a limonene-dominant terpene profile. At a practical level, this means a plant that stretches 40-60% after the flip and produces elongated colas with good light penetration through the canopy, finishing in 8-10 weeks. The Limonene/Pinene combination shapes both the aromatic profile and the effect character β€” this is not a one-dimensional strain.

Growing Parameters

Flowering time: 8-10 weeks from flip. Indoor yield at 600+ PPFD: 400-500g/mΒ². Outdoor in full sun with 5+ gallon containers: 400-600g/plant. Plant height indoors after training: Short-Medium (2-3.5 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 18% THC, White Nightmare delivers happy, relaxed, uplifted effects with a limonene-influenced character. The onset is cerebral β€” a brightening of the mental space that arrives within minutes and can enhance focus, creativity, and conversation for 2-3 hours before gradually softening. The body stays comfortable without heaviness. The limonene dominance keeps the mental space bright and slightly elevated even when the body relaxes.

Terpene Profile

Dominant terpenes: Limonene (primary), Pinene (secondary), Terpinolene (tertiary). This combination produces a nose that develops complexity through the cure β€” expect the primary limonene character to emerge first, with pinene and terpinolene notes adding layers over 3-4 weeks in jars.

Who Should Grow White Nightmare

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.

Effects

😊Happy
72% of people reported feeling Happy
😌Relaxed
65% of people reported feeling Relaxed
😎Uplifted
58% of people reported feeling Uplifted
πŸ€‘Energetic
50% of people reported feeling Energetic
🀩Creative
50% of people reported feeling Creative
πŸ€—Euphoric
40% of people reported feeling Euphoric
🧠Focused
35% of people reported feeling Focused
πŸ—£οΈTalkative
23% of people reported feeling Talkative
πŸ’ͺMotivated
24% of people reported feeling Motivated

Best For

✦ Anytime
✦ Depression
✦ Pain
✦ Stress

Strain Type

Indica 20%Sativa 70%

Strain Data Sheet

🧬THC18% - 21% (Medium-High)
🌿LineageDurban Poison Γ— Tangie
πŸ”¬TypeAutoflower Sativa
🌑ClimateAll Climates (Adaptable)
πŸ“…Harvest8 - 10 weeks from seed
πŸ“Height2.5 - 4.3 ft | 75 - 130 cm
βš–οΈYieldHigh
🏠Yield Indoor13.6 oz/ft² | 385 - 570 g/m²
🌳Yield Outdoor7 - 15 oz/plant | 185 - 420 g/plant
⏱Flowering Time8 - 10 weeks (seed to harvest)

Packaging

Resealable +
RK
Royal King Seeds
Autoflowering
Regular
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
White Nightmare Auto
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πŸ”’Sealed for authenticity
πŸ’§Waterproof coating
πŸ›‘οΈAluminium interior lining
🏷️Protective sticker
πŸ“±QR code verification
πŸ”’Scratchable serial number

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White Nightmare 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.

Total THC
18.3%
CBD
0.12%
Top Terpenes
Pinene, Limonene, Myrcene
Test Lab
Iron Labs (MI)
2024

White Nightmare Auto β€” Real Grower Yield Reports

Yield data from US growers cultivating White Nightmare 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.

SetupYield
Outdoor, 15-gal fabric pot, partial shade309g
5Γ—5 tent, 1000W HPS, ScrOG + topping202g

White Nightmare Auto β€” Sourcing & Genetics

Release Era
Recent (post-2020)
Parent Genetics
Acapulco Gold Γ— modern sativa hybrid
Lineage Notes

White Nightmare Auto traces its lineage back to landrace genetics from Asia and was modernized through North American breeders selecting for terpene complexity.

Recommended US Climate

Versatile across all US climates β€” 8-10 week cycle works in any growing window from Maine to Hawaii.

White Nightmare Auto 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
F5
Generations
5+
Breeding Program
Royal King Genetics Auto Line β€” recessive trait stabilization
Stabilization Notes β€” What This Means for Your Grow

White Nightmare is our F5 autoflower line. Five generations of selection have fixed both the autoflower trigger and the cerebral terpene profile the cultivar is known for. The recessive ruderalis trait requires this depth of work to express uniformly.

Breeding Goal

Lock the autoflower trait in White Nightmare through five generations of selection.

Selection Focus

Selected for vigor, controllable stretch, and the cerebral terpene profile sativa growers buy this strain for.

Pollen / Mother Source

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

Last Batch QC Verified
June 6, 2025Β· 99%+ germination
RK

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