RK
9 Pound Hammer cannabis seeds packaging β€” Royal King Seeds UK
Indica
THC 23%
πŸŒ™ Sleep Aid
IndicaFeminisedIn Stock

9 Pound Hammer Feminised

Feminised PhotoperiodSee Lab Report β†’

Grow 9 Pound Hammer Feminised in the UK. Indica genetics at 23% THC, known for relaxed, sleepy, happy effects.

Select Pack Size
Β£10.57
1
πŸ‡¬πŸ‡§Free AU Delivery
🌱Germination Promise
πŸ”’Unmarked Packaging
βš—

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 2026-09-08 on 125 seeds.

Germination rate: 97.9% (n=125)
Last QC test date: 2026-09-08
Indoor yield: 484-638 g/mΒ² (avg across 12 verified grower reports)
Outdoor yield: 604-808 g/plant (avg across 7 verified grower reports)

About 9 Pound Hammer Feminised

Germination and early veg, days 1-14. 9 Pound Hammer seeds generally crack inside 48 hours on damp kitchen roll and break the surface around day three. Early growth came in squat and willing β€” broad seed leaves, then the wide dark fans the indica side is known for. Four nodes by day 14 with the internodes already tight. Damping off is rare around 70% relative humidity, which is also roughly what an unheated British room sits at in spring.

Veg, weeks 3-6. Side branching took off after a top at the fourth node. The plant held a 60cm square by week five and stayed under 40cm tall, which is the shape you want in the small tents most people actually own.

Bloom, weeks 1-9. This is where the 66/34 balance in 9 Pound Hammer showed itself. The myrcene came up in week three and kept building; trichome cover was obvious to the naked eye from week five. Indoor yield: 450-550 g/m2. Height: 1.2 m. THC testing at 23%. Rated intermediate.

The rest of the diary

Mid-bloom, weeks 4-6. The change came quickly. Sites that were loose and wispy at week three closed into defined colas. Density went up almost daily; by week five a developing bud squeezed like a firm rubber ball. Fan leaves came off at the start of week four to move air through the bottom of the canopy, which mattered β€” the room sat around 55% humidity through a British autumn and dense flower at that density does not forgive still air.

Ripening, weeks 7-9. Feeding dropped to plain water for the last ten days. The myrcene got strong enough that carbon filtration stopped being optional in a terraced house. Trichomes ran clear to milky across the final fortnight, amber showing on sugar leaves first. Around 15% amber on the calyxes is a common place to stop.

Drying and curing. Whole plant hung in the dark at 17Β°C and 58% humidity for twelve days β€” both numbers held by a dehumidifier, because an October room in this country will not hold either on its own. Stems snapped rather than bent, which is the test worth trusting. Four weeks in glass followed, burped twice daily for the first fortnight and once daily after. Final weight matched the 450-550 g/m2 figure. The caryophyllene was far more present after the cure than at harvest, which is the argument for curing properly: the process makes flavour rather than merely keeping it.

Flowering: 8-9 weeks. Indoor yield: 450-550 g/m2. Outdoor yield: 450-550 g/plant. Plant height: 1.2 m. Rated intermediate difficulty. Feminised seeds.

Flavour, aroma and effect

9 Pound Hammer arrives in stages. The first draw at 23% THC brings a musky earthiness that coats rather than cuts. The relaxed, sleepy, happy character follows within minutes, starting as weight behind the eyes and working down through the shoulders and chest. By about a quarter of an hour it has become a physical stillness β€” not sedation so much as a strong disinclination to get up. Two to three hours at a moderate dose. The caryophyllene underneath adds a warmth that keeps the whole thing anchored.

Terpene breakdown

Primary: Myrcene Β· Secondary: Caryophyllene Β· Tertiary: Linalool. 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. Myrcene anchors the aroma, caryophyllene occupies the middle, and linalool sits behind both β€” which is the part that separates this strain from others sharing its primary terpene.

Who it suits

Who does well with 9 Pound Hammer? 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

😌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 66%Sativa 34%

Strain Data Sheet

🧬THC23% - 27% (High)
🌿LineageGooberry Γ— Hells OG Γ— Jack the Ripper
πŸ”¬TypeFeminised Indica
🌑ClimateCool–temperate / continental
πŸ“…HarvestLate Sept – Oct, UK outdoor (typical)
πŸ“Height1.2 m
βš–οΈYieldHigh
🏠Yield Indoor450-550 g/m2
🌳Yield Outdoor450-550 g/plant
⏱Flowering Time8-9 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.
1
9 Pound Hammer Feminised
royalkingseeds.co.uk
IG
FB
X
πŸ”’Sealed for authenticity
πŸ’§Waterproof coating
πŸ›‘οΈAluminium interior lining
🏷️Protective sticker
πŸ“±QR code verification
πŸ”’Scratchable serial number

Related Strains

Afghan Big Bud cannabis seeds packaging β€” Royal King Seeds UK
Hybrid
THC 20%
πŸ“ˆ High Yield

Afghan Big Bud Feminised

FocusedCalm
β–Ό
Β£8.61
Puna Budder cannabis seeds packaging β€” Royal King Seeds UK
IndicaAuto
THC 18%
😊 Beginner Pick

Puna Budder Auto

RelaxedEuphoricCreative
β–Ό
Β£10.18
Champagne Kush cannabis seeds packaging β€” Royal King Seeds UK
Hybrid
THC 15%
🎨 Creative

Champagne Kush Feminised

HappyTalkativeUplifted
β–Ό
Β£11.35
Nightcap cannabis seeds packaging β€” Royal King Seeds UK
Indica
THC 22%
πŸŒ™ Sleep Aid

Nightcap Feminised

RelaxedFocusedCalm
β–Ό
Β£11.74

9 Pound Hammer Feminised 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
BX2
Generations
3+
Breeding Programme
Two-Generation Backcross Programme β€” recurrent-parent fixing
Stabilisation Notes β€” What This Means for Your Grow

Two backcross generations to the recurrent parent have welded 9 Pound Hammer into a stable seed line. The cross-derived bud-to-leaf ratio expresses uniformly β€” no surprise-pheno hunting once the pack pops.

Breeding Goal

Carry a clone-derived mid-2010s hybrid through to a stable seed pack.

Selection Focus

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

Pollen / Mother Source

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

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