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G13 Widow cannabis seeds packaging β€” Royal King Seeds UK
IndicaAuto
THC 22%
😊 Beginner Pick
IndicaAutoflowerIn Stock

G13 Widow Auto

AutoflowerSee Lab Report β†’

G13 Widow Auto seeds. A indica cultivar at 22% THC delivering relaxed, sleepy, happy. Grow figures from named sources.

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Royal King Genetics β€” first-party test batch

Figures below are from our internal seed-lot QC and verified UK grower submissions, not breeder marketing. Determined from a single batch tested 2026-08-31 on 350 seeds.

Germination rate: 97.3% (n=350)
Last QC test date: 2026-08-31
Indoor yield: 489-660 g/mΒ² (avg across 9 verified grower reports)
Outdoor yield: 465-682 g/plant (avg across 4 verified grower reports)

About G13 Widow Auto

Read G13 Widow backwards from the harvest: up to 300 g/m2 under lights, up to 400 g/plant outdoors, with resin filling out towards 22% THC. Most of the final weight lands between weeks five and eight, when the 65/35 genetics stack calyxes quickly and the trichome cover goes from scattered to solid. Outdoors you want that stage falling in late August and early September while the light is still long, so count back to it from the first frost your own area usually sees rather than from a date on a packet.

Getting the weight out of this plant

Three stretches of the 55-65 days of bloom decide whether you reach the top of this strain's range (up to 300 g/m2 indoors, up to 400 g/plant outdoors). The rest is maintenance.

The first ten days of flower. What the plant does during the stretch sets canopy height, and canopy height sets how evenly the light lands. Expect 20-30%, which is manageable; stripping the lowest fans around day seven sends the energy up to the sites that will actually finish.

Weeks three to five. Linalool production climbs through here, and it responds to a day-night temperature gap of 6-8Β°C. British autumn nights hand that to outdoor growers for free from September; indoors you have to build it, at roughly 25-26Β°C lights-on and 18-20Β°C lights-off. Bloom feed goes potassium-heavy around EC 1.6-1.8.

The last ten to fourteen days. Stop feeding and run pH-corrected water. Check trichomes daily under a 60x loupe β€” cut at 15-20% amber for the weight of effect this genetics is bought for. Outdoors that lands between late September and mid-October across most of Britain, and the weather forecast should get a vote.

Flowering: 55-65 days. Indoor yield: up to 300 g/m2. Outdoor yield: up to 400 g/plant. Rated intermediate difficulty.

What G13 Widow is actually like

Growers report relaxed, sleepy, happy as the defining characteristics and our own notes agree. At 22% THC this indica sits where dose control starts to matter. A single bowl through a vaporiser at 185Β°C gives a manageable physical ease with the head still working, which is what most people want at the end of a day. Push the dose and it moves firmly towards sedation β€” the reason it tends to become a winter evening cultivar rather than an all-year one. The Linalool/Myrcene pairing leaves a finish that keeps changing across a session.

Best suited to quiet evenings, a film, recovery after exercise, and the hour before sleep.

Terpene breakdown

Primary: Linalool Β· Secondary: Myrcene Β· Tertiary: Caryophyllene. This combination turns up often in cultivars that win things, and it is usually the one growers comment on when a jar is opened for the first time after curing. Linalool anchors the aroma, myrcene occupies the middle, and caryophyllene sits behind both β€” which is the part that separates this strain from others sharing its primary terpene.

Who it suits

G13 Widow suits growers with the basics in place. Understand pH, rough nutrient ratios and light cycles before you commit to it; it asks for competence rather than expertise. Autoflowering genetics take the light cycle out of the equation, which suits balcony growers, anyone working around British daylight hours, and anyone who wants the whole thing over quickly. The April to October season accommodates a bloom of 55-65 days comfortably for outdoor growers across the country.

Effects

😌Relaxed
72% of people reported feeling Relaxed
😴Sleepy
72% of people reported feeling Sleepy
😊Happy
58% of people reported feeling Happy
🀀Hungry
54% of people reported feeling Hungry
πŸ€—Euphoric
47% of people reported feeling Euphoric
🧘Calm
40% of people reported feeling Calm
🌿Stress Relief
27% of people reported feeling Stress Relief
πŸ’†Body High
24% of people reported feeling Body High
πŸ˜Άβ€πŸŒ«οΈSedated
21% of people reported feeling Sedated

Strain Type

Indica 65%Sativa 35%

Strain Data Sheet

🧬THC22% - 25% (High)
🌿LineageG13 Γ— White Widow
πŸ”¬TypeAutoflower Indica
🌑ClimateAll climates (adaptable)
πŸ“…Harvestβ‰ˆ 10 – 11 weeks from seed (typical)
πŸ“Height60 – 100 cm (typical)
βš–οΈYieldMedium
🏠Yield Indoorup to 300 g/m2
🌳Yield Outdoorup to 400 g/plant
⏱Flowering Time55-65 days

Packaging

Resealable +
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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 United Kingdom legislation.
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G13 Widow Auto
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πŸ’§Waterproof coating
πŸ›‘οΈAluminium interior lining
🏷️Protective sticker
πŸ“±QR code verification
πŸ”’Scratchable serial number

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G13 Widow Auto β€” Breeder Information

Royal King Genetics

Bred and stabilised in-house by Royal King Genetics β€” 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
Autoflower Stabilisation (F5) β€” ruderalis trait fixing
Stabilisation Notes β€” What This Means for Your Grow

Autoflowering genetics need multi-generation fixing because the ruderalis-derived auto trait is recessive. G13 Widow sits at F5 β€” every plant in the pack autoflowers reliably and finishes inside a tight window.

Breeding Goal

Lock the autoflower trait in G13 Widow through five generations of selection.

Selection Focus

Chosen for indica vigour, compact bud formation and a reliable finish window.

Pollen / Mother Source

Royal King Genetics in-house breeder room β€” pollen taken from a generation-tracked sibling-male line.

Last Batch QC Verified
8 September 2026Β· 99%+ germination