RK
Treasure Island cannabis seeds packaging โ€” Royal King Seeds the UK
Hybrid
THC 25%
โšก High Potency
HybridFeminizedIn Stock

Treasure Island Feminized

Feminized PhotoperiodSee Lab Report โ†’

Grow Treasure Island Feminized in the UK. Hybrid genetics testing at 25% THC. Known for relaxed, happy, euphoric effects. Ships discreetly UK-wide with germination guarantee.

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ยฃ11.45
1
๐Ÿ‡ฆ๐Ÿ‡บFree AU Delivery
๐ŸŒฑGermination Promise
๐Ÿ”’Unmarked Packaging

About Treasure Island Feminized

Here is what Treasure Island delivers at harvest, with resin production peaking at 25% THC. The picture comes together when you work backwards through the 8-9 weeks window. Weight distribution across the 8-9 weeks cycle is pleasingly even, with a noticeable surge in the closing two weeks that rewards growers who resist harvesting prematurely. The 40/60 balance means you get both calyx stacking density and respectable trichome spread. For outdoor UK customers, the ideal harvest window lands between mid-March and mid-April โ€” early enough to dodge late-autumn moisture in most states, late enough to capture the full caryophyllene terpene development.

Maximising Your Harvest

To reach the upper end of this strain's yield potential, focus your efforts on three critical windows during the 8-9 weeks period.

Window 1: The first 10 days after flowering begins. Stretch management determines canopy uniformity, which directly impacts light distribution and final yield. Moderate 30-40% stretch is typical. One round of low-stress training on the tallest shoots keeps everything level.

Window 2: Weeks 3-5 of bloom. Caryophyllene terpene biosynthesis ramps up during this period. Maintain a day/night temperature differential of at least 6-8ยฐC to encourage terpene accumulation โ€” UK autumn evenings (March-April) naturally provide this swing for outdoor growers. Indoor cultivators should target 25-26ยฐC during lights-on and 18-20ยฐC during lights-off. Supplement with potassium-heavy bloom nutrients at EC 1.6-1.8.

Window 3: Final 10-14 days before harvest. Cease all nutrient input and flush with pH-adjusted water. Monitor trichomes daily with a 60x jeweller's loupe โ€” harvest at 10-15% amber for a balanced effect. Southern Hemisphere outdoor growers: this window typically falls in late March through mid-April.

Flowering: 8-9 weeks. Rated intermediate difficulty.

Flavour, Aroma, and Experience

The sensory arc of Treasure Island unfolds in stages. Initial inhalation at 25% THC brings a warm peppery spice that tingles at the back of the throat. The relaxed, happy, euphoric effects emerge within minutes, presenting as a simultaneous head-and-body experience. Mental clarity remains intact whilst the muscles release tension progressively. This dual action makes it adaptable โ€” a lighter dose suits afternoon tasks, a heavier dose transitions seamlessly into evening relaxation. The limonene secondary terpene adds a distinct layer: a mood-elevating brightness that counterbalances any heaviness.

Terpene Breakdown

Primary: Caryophyllene ยท Secondary: Limonene ยท Tertiary: Myrcene. 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, limonene provides mid-range character, and myrcene contributes a subtle background note that distinguishes this strain from others sharing the same primary terpene.

Suitability and Recommendations

Who grows Treasure Island successfully? Indoor growers seeking full control over their harvest timeline. Outdoor cultivators who want to decide exactly when flowering begins. Anyone with the space and patience to vegetate this plant to its full potential before triggering bloom. Difficulty is rated intermediate, meaning a moderate learning curve that rewards attention without demanding laboratory-grade conditions. Delivered UK-wide in discreet, unbranded packaging with germination guarantee included.

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 40%Sativa 60%

Strain Data Sheet

๐ŸงฌTHC25% - 28% (Very High)
๐ŸŒฟLineageBalanced Hybrid (Undisclosed Lineage)
๐Ÿ”ฌTypeFeminized Hybrid
๐ŸŒกClimateTemperate, adaptable
๐Ÿ“…HarvestLate Sept โ€“ Oct, UK outdoor (typical)
๐Ÿ“Height100 โ€“ 160 cm (typical)
โš–๏ธYieldMedium โ€“ High
๐Ÿ Yield Indoor400 โ€“ 500 g/mยฒ (typical)
๐ŸŒณYield Outdoor400 โ€“ 600 g/plant (typical)
โฑFlowering Time8-9 weeks

Packaging

Resealable +
RK
Royal King Seeds
Photoperiod
Feminized 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 UK Commonwealth, state, and territory legislation.
1
Treasure Island Feminized
royalkingseeds.co.uk
IG
FB
X
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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Treasure Island Feminized 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
BX2
Generations
3+
Breeding Programme
Royal King Genetics Backcross Line โ€” BX2 modern hybrid stabilisation
Stabilisation Notes โ€” What This Means for Your Grow

Two backcross generations to the recurrent parent have welded Treasure Island into a stable seed line. The cross-derived pack-to-pack uniformity expresses uniformly โ€” no surprise-pheno hunting once the pack pops.

Breeding Goal

Carry a clone-derived recent-era hybrid through to a stable seed 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 breeding facility โ€” pollen from internally selected sibling males of the recurrent parent.

Last Batch QC Verified
2 December 2025ยท 99%+ germination