RK
Neptune Kush cannabis seeds packaging β€” Royal King Seeds New Zealand
SativaAuto
THC 16%
⏱ Quick finisher
SativaAutoflowerIn Stock

Neptune Kush Auto

Neptune Kush Auto β€” sativa, 16% THC on the listing, happy, energetic, creative. Sent in plain packaging with NZ Post tracking and covered by our germination promise.

Select Pack Size
$23.39NZD
1
πŸ‡³πŸ‡ΏFree Over $150
🌱Replaced If It Fails
πŸ”’Nothing On The Box
βš—

What the seed lot did on the bench

Every lot is checked before it goes on the shelf, and the yield figures come from New Zealand growers who sent us a harvest weight against a batch code. This lot was read on 2026-09-06, from a tray sample of 280.

Opened on the bench: 95.5% of 280
Lot checked: 2026-09-06, at 21-24Β°C
Under lights here: 361-456 g/mΒ², across 14 grower reports
Outside here: 499-806 g/plant, across 6 grower reports

Outdoor figures come from a New Zealand season, so they run below what the same cultivar reaches somewhere with a longer, drier autumn. Treat them as what this plant does here. The full report for this lot sets out the method and the terpene panel.

About Neptune Kush Auto

Latitude decides more about a Neptune Kush crop than anything you buy. New Zealand runs roughly 34 to 47 degrees south, and that span turns one 10/90 sativa into two different plants: a Kaitaia grower fights airflow and humidity through a muggy February, while a Southland grower is counting the weeks to first frost. Neither problem is about heat. If frost rather than heat is your limit, the strain finder sorts the catalogue by finishing time.

Growing Neptune Kush in New Zealand Conditions

Indoors the outside world stops mattering and the job is control. Outdoors it is the whole brief.

Upper North Island β€” Northland, Auckland, Waikato, Bay of Plenty. The longest season in the country and the wettest finish. Bud rot, not sunshine, is what costs you a crop here, so plant where morning air moves and thin the interior early rather than admiring a dense canopy in January. More open flower architecture is an advantage through a humid autumn.

Lower North Island. Hawke's Bay and Gisborne are the driest and sunniest stretch; Taranaki, ManawatΕ« and Wellington trade that for rain and wind. Wind decides how tall you let a plant get more than the genetics do.

South Island. Nelson, Tasman and Marlborough offer the best outdoor conditions nationally β€” high sunshine hours, low summer rainfall. Canterbury, Otago and Southland run a genuinely short season where flowering runs 56 days seed to harvest is the number that matters, because everything is a race against the first frost. An autoflower sidesteps this by finishing on its own clock. If your season is short, the autoflowering indica list is the better starting point.

Effect Profile

Happy, Energetic, Creative is the consensus, and consensus is worth exactly what it sounds like β€” a starting point. 16% THC sets the scale; limonene and the terpenes alongside it shape the character rather than the strength.

Onset is quick by inhalation and slow by ingestion, which is where most bad experiences begin. Expect a mental lift first, with the body catching up later.

If potency is what you are shopping for, the high-THC seeds category is sorted for it.

The Terpenes

Limonene leads, pinene sits behind it, and terpinolene runs underneath.

Temperature changes what you get. Vaporised low, around 180 to 188 degrees, pinene and terpinolene come through cleanly while limonene stays in the background. Combusted, limonene dominates and the finer detail is largely lost. Same flower, two different experiences.

Who It Suits

Who does well with Neptune Kush? Growers with limited headroom or no interest in managing timers. Apartment balconies. Anyone wanting more than one run in a season. First-timers included β€” the genetics are forgiving.

Still deciding? The indoor-friendly genetics list is the narrower place to start.

Published Figures

  • Finishes in 56 days seed to harvest
  • Under lights: 350-400 g/m2
  • Grown out: 120-170 g/plant
  • Height: 70-100 cm
  • Difficulty: easy

Reported Effects

Descriptive, and ordered by how prominently each one appears in the sources we hold. Not a survey, and not a measurement.

😊Happy
Most prominent in the descriptions we hold
πŸ€‘Energetic
Reported alongside it
🀩Creative
Reported alongside it
😎Uplifted
Reported alongside it
πŸ€—Euphoric
Reported alongside it
🧠Focused
Reported alongside it
πŸ—£οΈTalkative
Reported alongside it
πŸ’ͺMotivated
Reported alongside it
πŸ˜†Giggly
Reported alongside it

Best For

✦ Daytime
✦ Creative Projects
✦ Social Activities

Where It Sits

Indica 10%Sativa 90%

The Numbers

🧬THC16% - 21% (Medium-High)
🌿Comes fromAutoflowering Sativa-Dominant Hybrid (Undisclosed Lineage)
πŸ”¬LeansAutoflower Sativa
🌑WantsAll climates (adaptable)
πŸ“…Comes downβ‰ˆ 10 – 11 weeks from seed (typical)
πŸ“Gets to70-100 cm
βš–οΈCarriesMedium – High
🏠Under lights350-400 g/m2
🌳In the ground120-170 g/plant
⏱Time in bloom56 days seed to harvest

How it arrives

Resealable +
RK
Royal King Seeds
Autoflowering
Regular
Seeds
Stored properly
Rigid vial
Resealable +
Sold to adults as souvenir stock and for keeping genetic lines intact. Establishing what the law where you live permits, and staying inside it, sits with the buyer.
1
Neptune Kush Auto
royalkingseeds.co.nz
IG
FB
X
πŸ”’Sealed, so tampering shows
πŸ’§Damp-proof outer layer
πŸ›‘οΈFoil lining inside
🏷️Tamper sticker
πŸ“±QR code on the pack
πŸ”’Scratch-off serial

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Where Neptune Kush Auto Comes From

We hold no documented parentage for this cultivar, so none is shown. A blank here is an admission rather than an oversight β€” we would rather leave it empty than publish a lineage we cannot stand behind.

We did not originate the cultivars in this catalogue and do not claim to have. What we do is select and stabilise the lines we sell, so that a pack grows out more uniformly than an unworked one β€” which matters more in New Zealand than in most places, because an outdoor grower here is working to a frost date rather than an open-ended season. The stabilisation programme sets out how that works and what it does not cover.

Every pack is covered by our germination promise: follow the method in the germination guide and seed that fails to open is replaced free within 30 days.