RK
Red Widow cannabis seeds packaging β€” Royal King Seeds New Zealand
HybridAuto
THC 25%
⚑ Strong
HybridAutoflowerIn Stock

Red Widow Auto

Growing Red Widow Auto in New Zealand: a hybrid at 25% THC, relaxed, happy, euphoric. Flowering window and height are on the page where we hold them, blank where we do not.

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$20.69NZD
1
πŸ‡³πŸ‡ΏFree Over $150
🌱Replaced If It Fails
πŸ”’Nothing On The Box
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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 2026-09-04, from a tray sample of 480.

Opened on the bench: 97.0% of 480
Lot checked: 2026-09-04, at 20-23Β°C
Under lights here: 419-557 g/mΒ², across 13 grower reports
Outside here: 426-640 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 Red Widow Auto

Latitude decides more about a Red Widow crop than anything you buy. New Zealand runs roughly 34 to 47 degrees south, and that span turns one 47/53 hybrid 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 Red Widow 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 50-70 days 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.

Reading the Effects Honestly

Effect descriptions are the least reliable part of any seed listing, this one included. What is defensible: this is a 47/53 hybrid at 25% THC, commonly described as relaxed, happy, euphoric, with caryophyllene leading the terpene profile.

What is not defensible is any promise about how it will feel for you. Dose, tolerance, setting and the phenotype you happen to pop all move the outcome more than the strain name does.

Growing a few and selecting the keeper is the only way to know. That is what a pack of autoflowering seeds is for.

The Terpenes

Caryophyllene leads, myrcene sits behind it, and humulene runs underneath.

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

Who It Suits

Red Widow 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 50-70 days
  • Under lights: up to 400 g/m2
  • Grown out: up to 400 g/plant
  • Height: 80–120 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.

😌Relaxed
Most prominent in the descriptions we hold
😊Happy
Reported alongside it
πŸ€—Euphoric
Reported alongside it
🀩Creative
Reported alongside it
😎Uplifted
Reported alongside it
🀀Hungry
Reported alongside it
😴Sleepy
Reported alongside it
πŸ˜†Giggly
Reported alongside it
🧠Focused
Reported alongside it

Best For

✦ Anytime
✦ Relaxation
✦ Stress Relief

Where It Sits

Indica 47%Sativa 53%

The Numbers

🧬THC25% - 29% (Very High)
🌿Comes fromRed Dragon Γ— White Widow
πŸ”¬LeansAutoflower Hybrid
🌑WantsAll climates (adaptable)
πŸ“…Comes downβ‰ˆ 10 – 11 weeks from seed (typical)
πŸ“Gets to80–120 cm
βš–οΈCarriesMedium – High
🏠Under lightsup to 400 g/m2
🌳In the groundup to 400 g/plant
⏱Time in bloom50-70 days

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
Red Widow 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 Red Widow Auto Comes From

Documented parentage is Red Dragon Γ— White Widow. 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.