RK
Painkiller XL cannabis seeds packaging โ€” Royal King Seeds the UK
Sativa
THC 9%
๐ŸŒ™ Sleep Aid
SativaFeminizedIn Stock

Painkiller XL Feminized

Feminized PhotoperiodSee Lab Report โ†’

Order Painkiller XL Feminized seeds online. A quality sativa cultivar at 9% THC delivering euphoric, relaxed, sleepy. Suited to all UK climate zones. Fast shipping and guaranteed germination.

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ยฃ10.26
1
๐Ÿ‡ฆ๐Ÿ‡บFree AU Delivery
๐ŸŒฑGermination Promise
๐Ÿ”’Unmarked Packaging

About Painkiller XL Feminized

Germination & Early Veg (Days 1-14): Painkiller XL seeds typically crack within 48 hours using the damp paper towel method and break soil by around day 3. Early growth was rapid and upright โ€” narrow first leaves reaching eagerly towards the light from day one. By the end of week two, five nodes were visible with noticeable spacing between each, signalling the sativa-dominant growth pattern ahead. Damping off is uncommon at around 70% relative humidity during this phase.

Vegetative Growth (Weeks 3-6): Vertical growth demanded attention. Even with low-stress training started in week 3, this plant wanted to climb. We bent the main stem at a 90-degree angle in week 4 and the secondary branches quickly caught up, creating a naturally flat canopy by week 6.

Flower (Weeks 1-60): This is where the 25/75 genetics of Painkiller XL truly revealed itself. The limonene aroma appeared in week 3 of flower and intensified steadily. Trichome coverage became visually striking from week 5 onward. Final indoor yield: 500-550 g/m2. Plant height: 60-100 cm. THC testing at 9%. Difficulty rating: intermediate.

Continuing the Grow Diary

Mid-Flower (Weeks 4-6): The transformation accelerated dramatically. Bud sites that were wispy clusters at week 3 swelled into properly defined colas. The elongated bud structure continued developing lengthwise, with fresh calyxes stacking along the main stems. Interestingly, the secondary branches produced proportionally larger buds than expected โ€” the open structure allowed light to reach lower sites that a bushier plant would have shaded out entirely.

Late Flower and Ripening (Weeks 58-60): Nutrient input dropped to plain water with a splash of molasses for the final 10 days. The limonene aroma became powerful enough that carbon filtration was essential โ€” our neighbours would have noticed otherwise. Trichomes progressed from clear to milky across the final fortnight, with amber heads appearing on sugar leaves first. A common harvest window is around 15% amber on the calyxes.

Dry and Cure (Post-Harvest): Whole-plant hang dry in a darkened room at 17ยฐC and 58% humidity for 12 days. Stems snapped cleanly rather than bending, confirming the moisture content was appropriate for jarring. After 4 weeks of glass jar curing with twice-daily burping (first 2 weeks) then daily burping (weeks 3-4), the bouquet fully developed. Final weight confirmed the 500-550 g/m2 yield estimate. The terpinolene secondary terpene became far more pronounced after curing than it was at harvest โ€” a reminder that the drying and curing process genuinely creates flavour rather than merely preserving it.

Flowering: 50-60 days. Indoor yield: 500-550 g/m2. Outdoor yield: 500-550 g/plant. Plant height: 60-100 cm. Rated intermediate difficulty. Feminised seeds.

What to Expect When Using Painkiller XL

UK customers report euphoric, relaxed, sleepy as the defining characteristics, and our experience aligns with that consensus. At 9% THC, this sativa sits in a potency bracket where most users find a productive sweet spot. Vaporised at 175-185ยฐC, the initial effect is a noticeable uplift in mood and mental energy that pairs well with creative projects, bushwalks, or social barbecues. The body remains light and mobile throughout, making this a genuine daytime option for those with THC tolerance. The Limonene/Terpinolene terpene combination imparts a flavour that lingers on the palate โ€” zesty and bright with a clean, refreshing aftertaste.

Ideal settings: creative pursuits, social gatherings, outdoor adventures, and daytime leisure.

Terpene Breakdown

Primary: Limonene ยท Secondary: Terpinolene ยท Tertiary: Pinene. 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 limonene dominance anchors the aroma, terpinolene provides mid-range character, and pinene contributes a subtle background note that distinguishes this strain from others sharing the same primary terpene.

Suitability and Recommendations

Painkiller XL 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. Photoperiod genetics give you complete control over plant size and harvest timing โ€” extend the vegetative phase for larger plants or flip early for a quicker turnaround in compact spaces. The UK growing season (October through April) accommodates the 50-60 days bloom period comfortably for outdoor cultivators in all states. Shipped discreetly across the UK with our germination guarantee.

Effects

๐Ÿค—Euphoric
74% of people reported feeling Euphoric
๐Ÿ˜ŒRelaxed
65% of people reported feeling Relaxed
๐Ÿ˜ดSleepy
65% of people reported feeling Sleepy
๐Ÿ˜ŠHappy
51% of people reported feeling Happy
๐Ÿค‘Energetic
44% of people reported feeling Energetic
๐ŸคฉCreative
43% of people reported feeling Creative
๐Ÿ˜ŽUplifted
31% of people reported feeling Uplifted
๐Ÿง Focused
28% of people reported feeling Focused
๐Ÿ—ฃ๏ธTalkative
16% of people reported feeling Talkative

Strain Type

Indica 25%Sativa 75%

Strain Data Sheet

๐ŸงฌTHC9% - 12% (Medium)
๐ŸŒฟLineageSativa-Dominant Hybrid (Undisclosed Lineage)
๐Ÿ”ฌTypeFeminized Sativa
๐ŸŒกClimateWarm / Mediterranean, long season
๐Ÿ“…HarvestLate Sept โ€“ Oct, UK outdoor (typical)
๐Ÿ“Height60-100 cm
โš–๏ธYieldHigh
๐Ÿ Yield Indoor500-550 g/m2
๐ŸŒณYield Outdoor500-550 g/plant
โฑFlowering Time50-60 days

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
Painkiller XL 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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Painkiller XL 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

Backcrossed twice to the dominant parental line. Painkiller XL now expresses haze-character terps consistently across the population โ€” what made the original cross interesting is preserved without the pheno-roulette of an unstabilised F1.

Breeding Goal

Fix parent-cut traits in Painkiller XL without narrowing the population too far.

Selection Focus

Chosen for clear-headed terpene expression, structural manageability and a finish that lands inside the published window.

Pollen / Mother Source

Royal King Genetics elite-cut archive โ€” pollen from a maintained S1 line of the original elite mother.

Last Batch QC Verified
30 October 2025ยท 99%+ germination