Neptune Kush cannabis seeds packaging, Royal King Seeds USA
SativaAuto
THC 16%
😊 Beginner Pick
SativaAutoflowerIn Stock

Neptune Kush Auto

Auto F5Lab Profile Available →

Mellow sativa autoflower with happy and energetic effects and extended stretch and airy colas. Ideal for intermediate growers seeking potency and reliable yields.

Flavor:Tropical fruit, sweet haze, earthy undertones

Best for:🌞Daytime🎨Creative Projects🤝Social Activities
Intermediate Grower
🧬
THC
16%
Flower
10 - 12 weeks
⚖️
Yield
High
🎯
Difficulty
Intermediate
📏
Height
Medium
🌱
Grow
Indoor / Outdoor
💡

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

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$12.99USD

Premium stabilized genetics · germination guaranteed

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

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🌱Germination Guarantee
🔒Discreet Packaging
Popular strain, limited batches available
Stabilized genetics from established breeders

About Neptune Kush Auto

Neptune Kush is a 10/90 sativa testing at 16% 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, this is not a one-dimensional strain.

Growing Parameters

Flowering time: 8-10 weeks from flip. Indoor yield at 600+ PPFD: 400-500g/m². 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 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 16% THC, Neptune Kush delivers happy, energetic, creative effects with a limonene-influenced character. The onset is cerebral, 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 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 Neptune Kush

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. Ships discreetly to all 50 US states with our germination guarantee.

Effects

😊Happy
72% of people reported feeling Happy
🤑Energetic
64% of people reported feeling Energetic
🤩Creative
63% of people reported feeling Creative
😎Uplifted
51% of people reported feeling Uplifted
🤗Euphoric
47% of people reported feeling Euphoric
🧠Focused
42% of people reported feeling Focused
🗣️Talkative
30% of people reported feeling Talkative
💪Motivated
31% of people reported feeling Motivated
😆Giggly
24% of people reported feeling Giggly

Best For

Daytime
Creative Projects
Social Activities

Strain Type

Indica 10%Sativa 90%

Strain Data Sheet

🧬THC16% - 21% (Medium-High)
🌿LineageSuper Lemon Haze × Strawberry Cough
🔬TypeAutoflower Sativa
🌡ClimateAll Climates (Adaptable)
📅Harvest10 - 12 weeks from seed
📏Height2.4 - 4.1 ft | 71 - 122 cm
⚖️YieldHigh
🏠Yield Indoor13.4 oz/ft² | 381 - 562 g/m²
🌳Yield Outdoor4 - 12 oz/plant | 121 - 352 g/plant
Flowering Time10 - 12 weeks (seed to harvest)

Packaging

Resealable +
RK
Royal King Seeds
Autoflowering
Regular
Seeds
Premium US 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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Neptune Kush Auto
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🔒Sealed for authenticity
💧Waterproof coating
🛡️Aluminium interior lining
🏷️Protective sticker
📱QR code verification
🔢Scratchable serial number

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Neptune Kush Auto, 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.

Total THC
15.9%
CBD
0.14%
Top Terpenes
Pinene, Limonene, Myrcene

Neptune Kush Auto, Aggregated Grower Yield Reports

Yield ranges aggregated from public grower journals, breeder-documented spec sheets, and cultivation community reports on Neptune Kush Auto autoflower seeds. First-time growers should expect 70-85 percent of these numbers.

SetupYield
3×3 tent, 400W LED, LST139g
Outdoor, balcony, 5-gal fabric pot242g

Neptune Kush Auto, Sourcing & Genetics

Release Era
1990s heritage
Parent Genetics
Acapulco Gold × modern sativa hybrid
Lineage Notes

Neptune Kush 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, 8-10 week cycle works in any growing window from Maine to Hawaii.

Neptune Kush Auto, Breeder Information

Royal King Genetics

Bred 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.

Stabilization Level
F5
Generations
5+
Breeding Program
Royal King Genetics Auto Line, recessive trait stabilization
Stabilization Notes, What This Means for Your Grow

Five generations of selection on Neptune Kush to lock the autoflower trait. Auto trigger reliability and cerebral terpene profile expression are uniform across the population, no rogue photoperiod plants in the pack.

Breeding Goal

Stabilize the recessive ruderalis trait in Neptune Kush for uniform auto-trigger.

Selection Focus

Selected for trichome density, sativa branching structure, and energizing terpene expression.

Pollen / Mother Source

Royal King Genetics elite-cut archive, pollen from a maintained S1 line of the original elite mother.

Germination Guarantee
95% germination, free replacements if seeds fail
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