RK
Lemon cannabis seeds packaging โ€” Royal King Seeds the UK
HybridAuto
THC 18%
๐Ÿ˜Š Beginner Pick
HybridAutoflowerIn Stock

Lemon Auto

AutoflowerSee Lab Report โ†’

Grow Lemon Auto in the UK. Hybrid genetics at 18% THC, known for euphoric, creative, focused effects.

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

About Lemon Auto

Germination & Early Veg (Days 1-14): Lemon seeds typically crack within 48 hours using the damp paper towel method and break soil by around day 3. Early growth was steady and symmetrical โ€” neither racing ahead nor lagging behind. Four well-developed nodes by day 14 with balanced internodal distance that hinted at the hybrid structure to come. Damping off is uncommon at around 70% relative humidity during this phase.

Vegetative Growth (Weeks 3-6): Responded beautifully to a simple top-and-train approach. Topping at node 4 produced six strong lateral leaders that we tied down gently, resulting in an even canopy across a 70cm x 70cm area by the time we flipped.

Flower (Weeks 1-63): This is where the 57/43 genetics of Lemon truly revealed itself. The caryophyllene aroma appeared in week 3 of flower and intensified steadily. Trichome coverage became visually striking from week 5 onward. Final indoor yield: 350-400 g/m2. Plant height: 100 cm. THC testing at 18%. 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. Balanced development across all bud sites. The canopy we established during veg paid dividends now โ€” eight equally developed colas rather than one dominant top and a collection of lesser branches. Trichome production was visible to the naked eye from week 4 onward.

Late Flower and Ripening (Weeks 61-63): Nutrient input dropped to plain water with a splash of molasses for the final 10 days. The caryophyllene 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 350-400 g/m2 yield estimate. The limonene 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: 63 days. Indoor yield: 350-400 g/m2. Outdoor yield: 80-100 g/plant. Plant height: 100 cm. Rated intermediate difficulty. Regular seeds with autoflowering genetics.

Flavour, Aroma, and Experience

The sensory arc of Lemon unfolds in stages. Initial inhalation at 18% THC brings a warm peppery spice that tingles at the back of the throat. The euphoric, creative, focused, calm 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. Flavour translation from flower to vapour and smoke differs with this terpene combination. Low-temperature vaporisation (180-188ยฐC) highlights the limonene and myrcene notes whilst keeping caryophyllene as a foundation. Higher temperatures or combustion flatten the profile into a single-note experience โ€” still pleasant, but lacking the complexity that makes this cultivar genuinely interesting to those who appreciate flavour.

Suitability and Recommendations

Who grows Lemon successfully? Balcony growers in flats from Brighton to Glasgow. Regional cultivators wanting a quick-turnaround outdoor crop. Indoor growers with limited headroom in small tents. The autoflowering genetics run on their own internal clock โ€” no light schedule adjustments, no stress about light leaks, and harvest arrives 10-12 weeks after germination regardless of the season. 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

๐Ÿค—Euphoric
74% of people reported feeling Euphoric
๐ŸคฉCreative
70% of people reported feeling Creative
๐Ÿง Focused
62% of people reported feeling Focused
๐Ÿง˜Calm
53% of people reported feeling Calm
๐Ÿ˜ŒRelaxed
45% of people reported feeling Relaxed
๐Ÿ˜ŠHappy
38% of people reported feeling Happy
๐Ÿ˜ŽUplifted
31% of people reported feeling Uplifted
๐ŸคคHungry
27% of people reported feeling Hungry
๐Ÿ˜ดSleepy
24% of people reported feeling Sleepy

Strain Type

Indica 57%Sativa 43%

Strain Data Sheet

๐ŸงฌTHC18% - 22% (Medium-High)
๐ŸŒฟLineageAutoflowering Balanced Hybrid (Undisclosed Lineage)
๐Ÿ”ฌTypeAutoflower Hybrid
๐ŸŒกClimateAll climates (adaptable)
๐Ÿ“…Harvestโ‰ˆ 10 โ€“ 11 weeks from seed (typical)
๐Ÿ“Height100 cm
โš–๏ธYieldMedium โ€“ High
๐Ÿ Yield Indoor350-400 g/m2
๐ŸŒณYield Outdoor80-100 g/plant
โฑFlowering Time63 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
Lemon Auto
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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Lemon 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

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

Breeding Goal

Reach auto trigger and finish-window uniformity for the Lemon pack.

Selection Focus

Chosen for balanced indica/sativa expression, terpene fidelity and pack-to-pack uniformity.

Pollen / Mother Source

Royal King Genetics breeding facility โ€” pollen from internally selected sibling males of the recurrent parent.

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