RK
Red Widow cannabis seeds packaging โ€” Royal King Seeds the UK
HybridAuto
THC 25%
โšก High Potency
HybridAutoflowerIn Stock

Red Widow Auto

AutoflowerSee Lab Report โ†’

Red Widow Auto seeds. A hybrid cultivar at 25% THC delivering relaxed, happy, euphoric. Grow figures from named sources.

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ยฃ9.35
1
๐Ÿ‡ฌ๐Ÿ‡งFree AU Delivery
๐ŸŒฑGermination Promise
๐Ÿ”’Unmarked Packaging

About Red Widow Auto

Where you grow Red Widow in the UK matters, but less than when. Britain has one temperate maritime climate and a real north-south gradient: the south coast runs a season roughly a fortnight longer at each end than Scotland and upland Wales. Outdoors the limiting factor is not heat, it is the wet finish โ€” September and October rain sitting on dense flower is what starts botrytis, and it is the most common reason a UK outdoor crop is lost. That makes the 50-70 days flowering window and bud structure the two figures worth checking before anything else. Indoors none of it applies: you set the daylength, the temperature and the humidity, and Red Widow can be grown anywhere in the country on its merits.

UK growers face a fairly consistent set of pressures. The damp late season is the main one: botrytis in dense flower from September onwards, which is best answered with open bud structure and steady airflow rather than treatment. Indoors, spider mite and thrips are the usual arrivals, and humidity above 60% in late bloom is what turns a small problem into a lost crop. Outdoors in a wet spring, slugs take more seedlings than any insect.

What to Expect When Using Red Widow

UK customers report relaxed, happy, euphoric as the defining characteristics, and our experience aligns with that consensus. At 25% THC, this hybrid sits in a potency bracket where versatility is the main advantage. Morning users report functional clarity at lower doses. Evening users report satisfying relaxation at higher doses. The ${indica}/${sativa} balance means the dominant effect direction shifts with consumption amount rather than being locked into a single character. The Caryophyllene/Myrcene terpene combination imparts a flavour that lingers on the palate โ€” warm and spiced, drying slightly on the exhale.

Ideal settings: adaptable across occasions โ€” adjust dose to match the energy level your situation calls for.

Terpene Breakdown

Primary: Caryophyllene ยท Secondary: Myrcene ยท Tertiary: Humulene. This particular terpene trio appears frequently in award-winning cultivars and produces a nose that most UK growers find immediately appealing when jars are first opened after curing. The caryophyllene dominance anchors the aroma, myrcene provides mid-range character, and humulene contributes a subtle background note that distinguishes this strain from others sharing the same primary terpene.

Suitability and Recommendations

Red Widow suits growers with fundamental skills already established. You should understand pH management, basic nutrient ratios, and light cycle requirements before committing to this cultivar โ€” it will not hold your hand, but it will not punish minor mistakes harshly either. Autoflowering genetics eliminate the need for light cycle manipulation, making this ideal for UK balcony growers, guerrilla setups, and anyone wanting a fast turnaround from seed to harvest. The UK growing season (April through October) accommodates the 50-70 days bloom period comfortably for outdoor cultivators across the country. Shipped discreetly across the UK with our germination guarantee.

Effects

๐Ÿ˜ŒRelaxed
72% of people reported feeling Relaxed
๐Ÿ˜ŠHappy
65% of people reported feeling Happy
๐Ÿค—Euphoric
60% of people reported feeling Euphoric
๐ŸคฉCreative
56% of people reported feeling Creative
๐Ÿ˜ŽUplifted
45% of people reported feeling Uplifted
๐ŸคคHungry
41% of people reported feeling Hungry
๐Ÿ˜ดSleepy
38% of people reported feeling Sleepy
๐Ÿ˜†Giggly
31% of people reported feeling Giggly
๐Ÿง Focused
21% of people reported feeling Focused

Strain Type

Indica 47%Sativa 53%

Strain Data Sheet

๐ŸงฌTHC25% - 29% (Very High)
๐ŸŒฟLineageRed Dragon ร— White Widow
๐Ÿ”ฌTypeAutoflower Hybrid
๐ŸŒกClimateAll climates (adaptable)
๐Ÿ“…Harvestโ‰ˆ 10 โ€“ 11 weeks from seed (typical)
๐Ÿ“Height60 โ€“ 100 cm (typical)
โš–๏ธYieldMedium โ€“ High
๐Ÿ Yield Indoorup to 400 g/m2
๐ŸŒณYield Outdoorup to 400 g/plant
โฑFlowering Time50-70 days

Packaging

Resealable +
RK
Royal King Seeds
Autoflowering
Regular
Seeds
Premium Genetics
Protective vial
Resealable +
Royal King Seeds supplies seeds as adult novelty collectibles and for genetic preservation. Purchasers must comply with all applicable UK Commonwealth, state, and territory legislation.
1
Red Widow Auto
royalkingseeds.co.uk
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๐Ÿ”’Sealed for authenticity
๐Ÿ’งWaterproof coating
๐Ÿ›ก๏ธAluminium interior lining
๐Ÿท๏ธProtective sticker
๐Ÿ“ฑQR code verification
๐Ÿ”ขScratchable serial number

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Red Widow Auto โ€” Breeder Information

Royal King Genetics

Bred and stabilised in-house by Royal King Genetics โ€” our internal breeding team. Every batch is QC'd and germ-tested above 99% before it ships. Read the full breeding process and about page.

Stabilisation Level
F5
Generations
5+
Breeding Programme
Royal King Genetics Auto Line โ€” recessive trait stabilisation
Stabilisation Notes โ€” 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 โ€” fixing it takes multi-generation work โ€” 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 โ€” pollen taken from a sibling male drawn from the same selected pheno population.

Last Batch QC Verified
22 January 2026ยท 99%+ germination