Sirius Black cannabis seeds packaging — Royal King Seeds Australia
Indica
THC 24%
🎨 Creative
IndicaFeminizedIn Stock

Sirius Black Feminized

S1 FeminizedSee Lab Report →

Grow Sirius Black Feminized in Australia. Indica genetics testing at 24% THC. Known for euphoric, creative effects. Ships discreetly Australia-wide with germination guarantee.

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$12.99AUD
1
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Royal King Genetics — first-party test batch

Figures below are from our internal seed-lot QC and verified Australian grower submissions, not breeder marketing. Determined from a single batch tested 2026-03-01 on 375 seeds.

Germination rate: 99.3% (n=375)
Last QC test date: 2026-03-01
Indoor yield: 438-590 g/m² (avg across 10 verified grower reports)
Outdoor yield: 470-652 g/plant (avg across 9 verified grower reports)

About Sirius Black Feminized

Where you grow Sirius Black in Australia matters enormously. Queensland cultivators dealing with 35°C+ summers and oppressive humidity need to approach this 83/17 indica differently than someone in Tasmania's mild maritime climate or Victoria's temperamental shoulder seasons. In tropical and subtropical zones, the dense flower architecture at 24% THC creates a genuine mould risk once relative humidity climbs past 65% — coastal QLD and northern NSW growers should prioritise airflow management above all else. Move south to Melbourne or Adelaide, and that same density becomes an asset: cooler autumn nights intensify the caryophyllene terpene expression and the compact frame handles wind exposure without staking.

Australian Climate Considerations

Indoor cultivators can control their environment regardless of location, but Sirius Black rewards specific adjustments for Australian conditions. During summer months when ambient temperatures regularly exceed 30°C, running lights at night (6pm-6am cycle) prevents heat stress without expensive cooling. Relative humidity targets: 55-65% in veg, dropping to 40-50% once flowers form. EC targets: 1.0-1.4 during vegetative growth, stepping up to 1.6-2.0 at peak bloom. pH maintained between 5.8 and 6.3 depending on your medium.

Outdoor growers face region-specific challenges. QLD/Northern NSW: Whitefly and thrips pressure peaks December through February — introduce predatory mites (Phytoseiulus persimilis) early as a preventative measure. The high UV index accelerates trichome production but monitor for light stress on young transplants. VIC/SA/TAS: Your compressed outdoor window (November-March) suits this cultivar's 9-11 weeks bloom period, but start seeds indoors by late September to maximise vegetative growth before the December solstice. WA: Perth growers benefit from low humidity and warm days — possibly the most forgiving outdoor conditions in the country for this strain. Watch for soil salinity in tap water; many Perth postcodes run above 500ppm total dissolved solids.

Flowering: 9-11 weeks. Indoor yield: 450-550g/m². Outdoor yield: 350-500g/plant. Plant height: Compact (60-90cm). Rated intermediate difficulty.

Flavour, Aroma, and Experience

The sensory arc of Sirius Black unfolds in stages. Initial inhalation at 24% THC brings a warm peppery spice that tingles at the back of the throat. The euphoric, creative effects emerge within minutes, beginning as a pleasant heaviness behind the eyes that migrates downward through the shoulders, chest, and limbs. By the fifteen-minute mark, a deep physical stillness sets in — not sedation exactly, but a reluctance to move that makes the couch remarkably appealing. Duration runs 2-3 hours at moderate doses. The myrcene secondary terpene adds a distinct layer: additional body depth that reinforces the physical dimension.

Terpene Breakdown

Primary: Caryophyllene · Secondary: Myrcene · Tertiary: Bisabolol. This particular terpene trio appears frequently in award-winning cultivars and produces a nose that most Australian growers find immediately appealing when jars are first opened after curing. The caryophyllene dominance anchors the aroma, myrcene provides mid-range character, and bisabolol contributes a subtle background note that distinguishes this strain from others sharing the same primary terpene.

Suitability and Recommendations

Who grows Sirius Black 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 Australia-wide in discreet, unbranded packaging with germination guarantee included.

Effects

🤗Euphoric
74% of people reported feeling Euphoric
🤩Creative
70% of people reported feeling Creative
😌Relaxed
58% of people reported feeling Relaxed
😴Sleepy
58% of people reported feeling Sleepy
😊Happy
45% of people reported feeling Happy
🤤Hungry
41% of people reported feeling Hungry
🧘Calm
33% of people reported feeling Calm
🌿Stress Relief
20% of people reported feeling Stress Relief
💆Body High
17% of people reported feeling Body High

Best For

Evening
Relaxation
Sleep Support

Strain Type

Indica 83%Sativa 17%

Strain Data Sheet

🧬THC24% - 27% (High)
🌿LineageDeath Star × LA Confidential
🔬TypeFeminized Indica
🌡ClimateContinental, Temperate
📅HarvestLate September - Early October
📏Height91 - 152 cm
⚖️YieldHigh
🏠Yield Indoor401 - 552 g/m²
🌳Yield Outdoor451 - 602 g/plant
Flowering Time7 - 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 Australian Commonwealth, state, and territory legislation.
1
Sirius Black Feminized
royalkingseeds.au
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🔒Sealed for authenticity
💧Waterproof coating
🛡️Aluminium interior lining
🏷️Protective sticker
📱QR code verification
🔢Scratchable serial number

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Sirius Black Feminized — 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
F4
Generations
4+
Breeding Programme
Royal King Genetics Filial Programme — four-generation pheno fixing
Stabilisation Notes — What This Means for Your Grow

Sirius Black runs through our F4 programme. Four cycles of phenotype selection have removed the worst of the trait variation; what is left is a tight, predictable population for production.

Breeding Goal

Cull off-type phenos in Sirius Black through filial selection.

Selection Focus

Chosen for resin output, a low-slung stature and a clean indica terpene fingerprint.

Pollen / Mother Source

Royal King Genetics select-mother programme — pollen drawn from an internally maintained reversed-female line.

Last Batch QC Verified
18 December 2025· 99%+ germination
RK

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