🌱
SativaAuto
THC 16%
😊 Beginner Pick
SativaAutoflowerIn Stock

Neptune Kush Auto

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

Select Pack Size
$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

Ready to grow this strain?

1
Proven results from US home growers
🎁

Free Seeds With Every Order

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

Choose your free strains — no mystery seeds. Learn more

🇺🇸Free Shipping
🌱Germination Guarantee
🔒Discreet Packaging
Popular strain — limited batches available
Community-verified premium genetics

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 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
Neptune Kush Auto
royalkingseeds.us
IG
FB
X
🔒Sealed for authenticity
💧Waterproof coating
🛡️Aluminium interior lining
🏷️Protective sticker
📱QR code verification
🔢Scratchable serial number

Related Strains

Afghan Kush Feminized
Indica
THC 20%
🌙 Sleep Aid

Afghan Kush Feminized

RelaxedSleepyHappy
$13.99USD
American Kush Feminized
Indica
THC 18%
🎨 Creative

American Kush Feminized

UpliftedFocusedCalm
$13.49USD
Sugar Cookie Feminized
Hybrid
THC 23%
🌙 Sleep Aid

Sugar Cookie Feminized

HappyRelaxedSleepy
$15.99USD
Zebra Cake Feminized
Indica
THC 22%
🎨 Creative

Zebra Cake Feminized

CreativeFocusedCalm
$13.49USD
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