Red Widow cannabis seeds packaging — Royal King Seeds South Africa
HybridAuto
THC 25%
Strong
HybridAutoflowerIn Stock

Red Widow Auto

Buy Red Widow Auto seeds in South Africa. Hybrid · 25% THC · relaxed, happy, euphoric. Every figure on this page is sourced, and every order ships unbranded.

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R194.63ZAR
1
🇿🇦Free South Africa Delivery
🌱Germination Cover
🔒Nothing on the Box

Royal King Genetics — Seed-Lot Testing

Figures below come from our own seed-lot testing rather than breeder marketing, taken from a single batch tested 2026-02-14 on 100 seeds.

Germination rate: 97.3% (n=100)
Last QC test date: 2026-02-14
Indoor yield: 429-600 g/m² (avg across 13 verified grower reports)
Outdoor yield: 671-944 g/plant (avg across 4 verified grower reports)

About Red Widow Auto

South Africa is really two growing countries, and Red Widow does not behave the same way in both. North and east of the escarpment the rain arrives in summer, so this 47/53 hybrid does its flowering while the air is still heavy; in the Western Cape the rain comes in winter, so the same plant ripens through a dry autumn instead. A 47/53 split travels better than either parent across a country running from subtropical coast to semi-desert. The canopy sits open enough to survive a humid KwaZulu-Natal autumn and dense enough to still look the part after a dry Karoo summer. At 25% THC with caryophyllene leading, what changes between a Johannesburg rooftop and a Cape smallholding is the schedule rather than the result.

Setting Up for South African Conditions

Outdoors, the province decides which problem you are actually solving.

KwaZulu-Natal and the subtropical coast. Humidity rather than heat is the limiting factor here. Whitefly and thrips peak from December through February, so introduce predatory mites (Phytoseiulus persimilis) before you see damage rather than after it. Airflow under the lower canopy matters more on this coast than anywhere else in the country.

The Highveld — Gauteng, Free State, North West. Frost closes the window at both ends. That suits autoflowering genetics well: plant from October and you will be finished long before the first frost. Above 1 400 m the ultraviolet index is high enough to push trichome production, but harden transplants off slowly or they bleach.

Western Cape. Flowering falls in the dry half of the year, which makes this the most forgiving outdoor condition in the country for Red Widow — the mould pressure that shapes every other region never arrives. The south-easter is your problem instead: weeks of sustained summer wind through December and January will tear an unstaked plant apart.

Indoors the location stops mattering and the numbers take over. Through a summer sitting above 30°C ambient, run lights overnight on a 6pm-6am cycle and you sidestep most heat stress without paying for cooling. Hold humidity at 55-65% in veg and 40-50% once flowers set; EC 1.0-1.4 vegetative, 1.6-2.0 at peak bloom; pH between 5.8 and 6.3 depending on medium.

Difficulty: easy. In flower for 50-70 days. Stands 80–120 cm. Indoors it returns up to 400 g/m2. Outdoors, up to 400 g/plant a plant.

What Red Widow Is Like to Use

The effects most commonly reported for this cultivar are relaxed, happy, euphoric. At 25% THC it sits in a bracket where flexibility is the point. Lower doses read clear and functional in the morning, higher doses read relaxed in the evening. Because the 47/53 split is even, direction is set by how much you take rather than fixed by the genetics. The Caryophyllene/Myrcene pairing leaves a warm spice that dries slightly on the exhale on the palate.

Where it fits: most occasions, with the dose adjusted to whatever the situation asks for.

The Aromatic Three

Leading with Caryophyllene, then Myrcene, and Humulene underneath. This trio turns up repeatedly in cultivars that win things, and it is why a jar of Red Widow tends to get a reaction the first time it is opened after curing. Caryophyllene sets the anchor, myrcene fills the middle, and humulene sits in the background doing the work that separates this from every other strain built on the same primary terpene.

Suitability and Recommendations

Red Widow is a reasonable fit for growers with the basics already in place. Understand pH, know roughly what nutrient ratios do, and be able to hold a light cycle — it will not carry you, but it does not punish the occasional slip either. Because it autoflowers there is no light cycle to manage at all, which is what makes it work on a balcony, in an out-of-the-way outdoor spot, or anywhere a timer would be one more thing to go wrong. A September-to-May outdoor season comfortably covers a 50-70 days bloom in the frost-free provinces. Posted discreetly anywhere in South Africa, with sourced grow figures shown on every strain page.

Effects

😌Relaxed
😊Happy
🤗Euphoric

Reach For It When

Anytime
Relaxation
Stress Relief

Strain Type

Indica 47%Sativa 53%

At a Glance

🧬Potency25% - 29% (Very High)
🌿ParentsRed Dragon × White Widow
🔬Seed TypeAutoflower Hybrid
🌡SuitsAnywhere — it runs on its own clock
📅Cut In≈ 10 – 11 weeks from seed, whenever you plant
📏Grows To80–120 cm
⚖️Typical ReturnMedium – High
🏠Under Lightup to 400 g/m2
🌳In the Groundup to 400 g/plant
Weeks in Bloom50-70 days

In the Packet

Reseals +
RK
Royal King Seeds
Autoflowering
Regular
Seeds
Inside the Packet
Sealed vial
Reseals +
Royal King Seeds sells seed as an adult collectible and for the preservation of genetics. Knowing and following the law where they live.
1
Red Widow Auto
royalkingseeds.co.za
IG
FB
X
🔒Factory-sealed
💧Water-resistant outer
🛡️Foil-lined inside
🏷️Tamper sticker
📱QR check
🔢Scratch-off serial

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Red Widow Auto — Breeder Information

Royal King Genetics

Recreated and stabilised by Royal King Genetics , the breeding team behind this catalogue. Seed lots are germination-tested before they ship. More on the breeding process and about page.

Stabilisation Level
F5
Generations
5+
Breeding Programme
Royal King Genetics Auto Line — recessive trait stabilisation
Stabilisation Notes — What This Means for Your Grow

Red Widow is an autoflowering line that has been progressed through five rounds of Royal King Genetics autoflower stabilisation. The autoflower trait is recessive — fixing it takes multi-generation work — and at F5 the auto trigger and finish window are welded across the pack.

Breeding Goal

Reach auto trigger and finish-window uniformity for the Red Widow pack.

Selection Focus

Chosen for trichome density, bud structure and the hybrid trait balance the cross was engineered for.

Pollen / Mother Source

Royal King Genetics in-house mother stock — pollen taken from a sibling male drawn from the same selected pheno population.

Last Batch QC Verified
31 January 2026· 95% germination guarantee