RK
Rainbow Kush cannabis seeds packaging โ€” Royal King Seeds New Zealand
HybridAuto
THC 22%
โฑ Quick finisher
HybridAutoflowerIn Stock

Rainbow Kush Auto

Rainbow Kush Auto โ€” hybrid, 22% THC on the listing, euphoric, focused, refreshing. Sent in plain packaging with NZ Post tracking and covered by our germination promise.

Select Pack Size
$20.69NZD
1
๐Ÿ‡ณ๐Ÿ‡ฟFree Over $150
๐ŸŒฑReplaced If It Fails
๐Ÿ”’Nothing On The Box
โš—

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 2026-09-07, from a tray sample of 240.

Opened on the bench: 96.4% of 240
Lot checked: 2026-09-07, at 20-23ยฐC
Under lights here: 395-554 g/mยฒ, across 13 grower reports
Outside here: 526-694 g/plant, across 4 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 Rainbow Kush Auto

Rainbow Kush is bought for what comes off it, and the sourced figures are 350-450 g/m2 under lights and 400-600 g/plant from a plant grown out. Those are ceilings, not promises โ€” pot volume, light intensity and how honestly you feed decide where you land inside them. Run the numbers for your own tent with the yield calculator before committing to a pack size, and put it next to the rest of the high-yield strains if weight is the whole point.

Getting the Weight Out of Rainbow Kush

What the sourced data gives for this cultivar: 350-450 g/m2 under lights, 400-600 g/plant from a plant grown outside. Reaching either is an environment problem before it is a genetics one.

Root volume sets the ceiling before a single flower forms. Under-pot a plant and no feeding schedule rescues it. Get the container right early and the plant does the rest.

Light is the second lever, and the one most growers get wrong in both directions โ€” too little through veg, too much in late flower where it bleaches rather than builds. Steady beats aggressive.

The third is the fortnight around the flip. Autoflowers give you no flip to manage, which is exactly why the vegetative period has to be right the first time โ€” there is no second chance to fix a stunted start.

Feed to the plant rather than the calendar. Our nutrient calculator gives a starting schedule; the plant will tell you where it is wrong. Worth a side-by-side comparison before you commit if weight is the deciding factor.

What Rainbow Kush Is Like

Reported effects cluster around euphoric, focused, refreshing. At 22% THC that is a meaningful figure rather than a decorative one, and the sensible approach with anything in this range is to start lower than you think and wait longer than feels necessary.

The 50/50 balance shapes where it lands: even-handed, with the dominant direction shifting by dose more than by time of day. Tolerance moves this more than any other variable, which is why two people describe the same jar differently.

Prefer something gentler? The CBD-forward strains range trades peak potency for balance.

The Terpenes

Myrcene leads, limonene sits behind it, and pinene runs underneath.

This trio is a common signature in well-regarded cultivars, which is not an accident: myrcene carries weight, limonene adds definition, pinene keeps it from being one-note. It reads clearly on a first opening rather than needing to be hunted for.

Who It Suits

Rainbow Kush is rated easy. That makes it a reasonable first grow โ€” it survives inconsistent watering and imprecise feeding without collapsing, which is what a first season mostly consists of. Being an autoflower removes light-cycle management entirely, which suits balcony growers and anyone wanting a fast turnaround.

Shipped nationwide in plain packaging. Every strain page carries whatever grow data we could actually source, and nothing we could not.

Published Figures

  • Finishes in 8-10 weeks seed to harvest
  • Under lights: 350-450 g/m2
  • Grown out: 400-600 g/plant
  • Height: 1.5 m
  • 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.

๐Ÿค—Euphoric
Most prominent in the descriptions we hold
๐Ÿง Focused
Reported alongside it
๐ŸŒŸRefreshing
Reported alongside it
๐Ÿ˜ŒRelaxed
Reported alongside it
๐Ÿ˜ŠHappy
Reported alongside it
๐ŸคฉCreative
Reported alongside it
๐Ÿ˜ŽUplifted
Reported alongside it
๐ŸคคHungry
Reported alongside it
๐Ÿ˜ดSleepy
Reported alongside it

Where It Sits

Indica 50%Sativa 50%

The Numbers

๐ŸงฌTHC22% - 27% (High)
๐ŸŒฟComes fromAutoflowering Balanced Hybrid (Undisclosed Lineage)
๐Ÿ”ฌLeansAutoflower Hybrid
๐ŸŒกWantsAll climates (adaptable)
๐Ÿ“…Comes downโ‰ˆ 10 โ€“ 11 weeks from seed (typical)
๐Ÿ“Gets to1.5 m
โš–๏ธCarriesMedium โ€“ High
๐Ÿ Under lights350-450 g/m2
๐ŸŒณIn the ground400-600 g/plant
โฑTime in bloom8-10 weeks 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
Rainbow Kush Auto
royalkingseeds.co.nz
IG
FB
X
๐Ÿ”’Sealed, so tampering shows
๐Ÿ’งDamp-proof outer layer
๐Ÿ›ก๏ธFoil lining inside
๐Ÿท๏ธTamper sticker
๐Ÿ“ฑQR code on the pack
๐Ÿ”ขScratch-off serial

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Where Rainbow 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 โ€” 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 โ€” 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.