Girl Scout Cookies cannabis seeds packaging — Royal King Seeds UK
Hybrid
THC 20%
🔥 26 sold this week
HybridFeminisedIn Stock

Girl Scout Cookies Feminised

Feminised PhotoperiodSee Lab Report →

Girl Scout Cookies Feminised cannabis seeds for UK growers. Hybrid · 20% THC · happy, euphoric, focused. Discreet UK delivery, priced in GBP.

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Royal King Genetics — 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 2026-09-07 on 350 seeds.

Germination rate: 97.3% (n=350)
Last QC test date: 2026-09-07
Indoor yield: 468-602 g/m² (avg across 12 verified grower reports)
Outdoor yield: 582-862 g/plant (avg across 3 verified grower reports)

About Girl Scout Cookies Feminised

Read Girl Scout Cookies backwards from the harvest: 400-500g/m² under lights, Up to 650 gr./plant outdoors, with resin filling out towards 20% THC. Weight goes on evenly across the 9-10 weeks of bloom, with a clear surge in the last two weeks that rewards leaving the plant alone. The 37/63 split gives you calyx density and an even spread of resin rather than one at the cost of the other. Outdoors, late September to mid-October is the window that misses the wettest of the finish across most of the country while still letting the caryophyllene arrive.

Getting the weight out of this plant

Three stretches of the 9-10 weeks of bloom decide whether you reach the top of this strain's range (400-500g/m² indoors, Up to 650 gr./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. Somewhere around a third is typical. One pass of low-stress training over the tallest shoots keeps the top flat.

Weeks three to five. Caryophyllene production climbs through here, and it responds to a day-night temperature gap of 6-8°C. British autumn nights hand that to outdoor growers for free from September; indoors you have to build it, at roughly 25-26°C lights-on and 18-20°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 — cut at 10-15% amber for the middle of the range. Outdoors that lands between late September and mid-October across most of Britain, and the weather forecast should get a vote.

Flowering: 9-10 weeks. Indoor yield: 400-500g/m². Outdoor yield: Up to 650 gr./plant. Plant height: up to ~120 cm (from seed). Rated intermediate difficulty.

Flavour, aroma and effect

Girl Scout Cookies arrives in stages. The first draw at 20% THC brings dry pepper that registers at the back of the throat. The happy, euphoric, focused, calm character follows within minutes, as a head and body effect at once. The mind stays clear while the muscles let go by degrees, which is what makes it adaptable — a small dose carries an afternoon, a larger one turns into an evening. The limonene underneath adds a lift that stops it turning heavy.

Terpene breakdown

Primary: Caryophyllene · Secondary: Limonene · Tertiary: Myrcene. These three build an aroma that keeps moving through the cure. Fresh off the dry it leads with caryophyllene; after three or four weeks sealed in glass at 16-18°C the myrcene underneath comes up and the whole thing gains a layer. Vaporising between 180°C and 195°C catches the widest span of them, since the lighter myrcene molecules are the first thing heat destroys.

Who it suits

Who does well with Girl Scout Cookies? Indoor growers who want the timeline under their own control. Outdoor growers who want to choose when flowering starts. Anyone with the room and the patience to veg it properly before flipping. Difficulty is rated intermediate, which means a moderate learning curve that rewards attention without demanding a laboratory.

Effects

😊Happy
72% of people reported feeling Happy
🤗Euphoric
67% of people reported feeling Euphoric
🧠Focused
62% of people reported feeling Focused
🧘Calm
53% of people reported feeling Calm
😌Relaxed
45% of people reported feeling Relaxed
🤩Creative
43% of people reported feeling Creative
😎Uplifted
31% of people reported feeling Uplifted
🤤Hungry
27% of people reported feeling Hungry
😴Sleepy
24% of people reported feeling Sleepy

Strain Type

Indica 37%Sativa 63%

Strain Data Sheet

🧬THC20% - 25% (High)
🌿LineageOG Kush × Durban Poison
🔬TypeFeminised Hybrid
🌡ClimateTemperate, adaptable
📅HarvestLate Sept – Oct, UK outdoor (typical)
📏Heightup to ~120 cm (from seed)
⚖️YieldMedium – High
🏠Yield Indoor400-500g/m²
🌳Yield OutdoorUp to 650 gr./plant
⏱Flowering Time9-10 weeks

Packaging

Resealable +
RK
Royal King Seeds
Photoperiod
Feminised Premium
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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Girl Scout Cookies Feminised
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💧Waterproof coating
🛡️Aluminium interior lining
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🔢Scratchable serial number

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Girl Scout Cookies Feminised — Breeder Information

Royal King Genetics

Bred and stabilised in-house by Royal King Genetics — 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
BX3
Generations
4+
Breeding Programme
Three-Generation Backcross Programme — recurrent-parent fixing
Stabilisation Notes — What This Means for Your Grow

Girl Scout Cookies has been the target of countless seed-bank backcross programmes. Ours is BX3 — three rounds of crossing the elite cut back to the parental line until trait expression evened out. The pack grows true to the mother cut.

Breeding Goal

Recreate the Girl Scout Cookies clone-only cut in stable seed form.

Selection Focus

Chosen for terpene profile, vigour, structure and finish-time consistency.

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
21 September 2026· 99%+ germination