RK
Sugar Black Rose cannabis seeds packaging β€” Royal King Seeds New Zealand
IndicaAuto
THC 18%
⏱ Quick finisher
IndicaAutoflowerIn Stock

Sugar Black Rose Auto

Sugar Black Rose Auto β€” indica, 18% THC on the listing, relaxed, sleepy, happy. Sent in plain packaging with NZ Post tracking and covered by our germination promise.

Select Pack Size
$21.59NZD
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 2026-09-16, from a tray sample of 380.

Opened on the bench: 97.0% of 380
Lot checked: 2026-09-16, at 20-23Β°C
Under lights here: 435-543 g/mΒ², across 15 grower reports
Outside here: 467-753 g/plant, across 5 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 Sugar Black Rose Auto

Sugar Black Rose is bought for what comes off it, and the sourced figures are 500 g/m2 under lights and 80 g/plant from a plant grown out. Those are ceilings, not promises β€” 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 Sugar Black Rose

What the sourced data gives for this cultivar: 500 g/m2 under lights, 80 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 β€” 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 β€” 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 Sugar Black Rose Is Like

Reported effects cluster around relaxed, sleepy, happy. At 18% 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 88/12 balance shapes where it lands: body-forward, better suited to an evening than a task list. 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, humulene sits behind it, and linalool runs underneath.

Aroma is not fixed at harvest β€” it develops. Fresh flower leads hard with myrcene; three or four weeks in sealed glass at a stable 16 to 18 degrees lets humulene and linalool come forward as the sharper volatiles clear. Jars opened at week one and week five smell like different plants.

Who It Suits

Sugar Black Rose is rated easy. That makes it a reasonable first grow β€” 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 60-70 days seed to harvest
  • Under lights: 500 g/m2
  • Grown out: 80 g/plant
  • Height: above 70 cm, normally up to 1 m or higher
  • 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.

😌Relaxed
Most prominent in the descriptions we hold
😴Sleepy
Reported alongside it
😊Happy
Reported alongside it
🀀Hungry
Reported alongside it
πŸ€—Euphoric
Reported alongside it
🧘Calm
Reported alongside it
🌟Settled
Reported alongside it
πŸ’†Body High
Reported alongside it
πŸ˜Άβ€πŸŒ«οΈSedated
Reported alongside it

Best For

✦ Evening
✦ Relaxation
✦ Sleep Support

Where It Sits

Indica 88%Sativa 12%

The Numbers

🧬THC18% - 22% (Medium-High)
🌿Comes fromCritical Mass Γ— Black Domina
πŸ”¬LeansAutoflower Indica
🌑WantsAll climates (adaptable)
πŸ“…Comes downβ‰ˆ 10 – 11 weeks from seed (typical)
πŸ“Gets toabove 70 cm, normally up to 1 m or higher
βš–οΈCarriesMedium – High
🏠Under lights500 g/m2
🌳In the ground80 g/plant
⏱Time in bloom60-70 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
Sugar Black Rose 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 Sugar Black Rose Auto Comes From

Documented parentage is Critical Mass Γ— Black Domina. Where a cultivar's origin is recorded we name it on this page; where it is contested or simply unknown, the field stays empty rather than being filled with something plausible.

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.