A-Train cannabis seeds packaging — Royal King Seeds Australia
IndicaAuto
THC 21%
😊 Beginner Pick
IndicaAutoflowerIn Stock

A-Train Auto

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A-Train Auto — premium indica cannabis seeds suited to Australian growing conditions. 21% THC with relaxed, sleepy, happy effects. Discreet delivery across Australia. Germination guaranteed.

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$14.99AUD
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🇦🇺Free AU Delivery
🌱Germination Promise
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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 2026-04-13 on 300 seeds.

Germination rate: 96.7% (n=300)
Last QC test date: 2026-04-13
Indoor yield: 435-558 g/m² (avg across 15 verified grower reports)
Outdoor yield: 571-838 g/plant (avg across 6 verified grower reports)

About A-Train Auto

Here is what A-Train actually delivers at harvest: 350-450g/m² per square metre indoors, 600-800g/plant per plant outdoors in Australian conditions, with resin production peaking at 21% THC across tested samples. Those numbers tell a story when you work backwards through the 8-10 weeks flowering window. The bulk of your final weight accumulates during weeks 5 through 8 — a period where the 79/21 genetics stack calyxes rapidly and trichome coverage shifts from scattered to frosted. Southern Hemisphere outdoor growers targeting a late-March harvest should calculate their flip date (or natural light trigger) accordingly, aiming for buds to enter this critical fattening stage during February when Australian daylight hours are still generous.

Maximising Your Harvest

To reach the upper end of yield potential (350-450g/m² indoors, 600-800g/plant outdoors), focus your efforts on three critical windows during the 8-10 weeks flowering period.

Window 1: The first 10 days after flowering begins. Stretch management determines canopy uniformity, which directly impacts light distribution and final yield. Expect modest stretch of 20-30% — a quick defoliation of lower fan leaves at day 7 redirects energy to developing bud sites.

Window 2: Weeks 3-5 of bloom. Myrcene terpene biosynthesis ramps up during this period. Maintain a day/night temperature differential of at least 6-8°C to encourage terpene accumulation — Australian autumn evenings (March-April) naturally provide this swing for outdoor growers. Indoor cultivators should target 25-26°C during lights-on and 18-20°C 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 — harvest at 15-20% amber for the full-bodied effect this genetics is known for. Southern Hemisphere outdoor growers: this window typically falls in late March through mid-April.

Plant height: Medium (90-120cm). Difficulty: intermediate.

What to Expect When Using A-Train

Australian users report relaxed, sleepy, happy as the defining characteristics, and our experience aligns with that consensus. At 21% THC, this indica sits in a potency bracket where dosage control genuinely matters. A single bowl in a vaporiser at 185°C produces a manageable, pleasant body relaxation with intact mental function — perfect for winding down after a long day in the Australian sun. Increasing the dose shifts the experience firmly towards physical sedation, and many users find this their preferred nighttime cultivar during the cooler months. The Myrcene/Humulene terpene combination imparts a flavour that lingers on the palate — earthy and slightly sweet with a fruit-like finish.

Ideal settings: quiet evenings, film nights, post-exercise recovery, and sleep preparation.

Terpene Breakdown

Primary: Myrcene · Secondary: Humulene · Tertiary: Linalool. 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 myrcene dominance anchors the aroma, humulene provides mid-range character, and linalool contributes a subtle background note that distinguishes this strain from others sharing the same primary terpene.

Suitability and Recommendations

A-Train suits growers with fundamental skills already established. You should understand pH management, basic nutrient ratios, and light cycle requirements before committing to this cultivar — it will not hold your hand, but it will not punish minor mistakes harshly either. Autoflowering genetics eliminate the need for light cycle manipulation, making this ideal for Australian balcony growers, guerrilla setups, and anyone wanting a fast turnaround from seed to harvest. The Australian growing season (October through April) accommodates the 8-10 weeks bloom period comfortably for outdoor cultivators in all states. Shipped discreetly throughout Australia with our germination guarantee.

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
🤗Euphoric
47% of people reported feeling Euphoric
🧘Calm
40% of people reported feeling Calm
🌿Stress Relief
27% of people reported feeling Stress Relief
💆Body High
24% of people reported feeling Body High
😶‍🌫️Sedated
21% of people reported feeling Sedated

Best For

Evening
Relaxation
Sleep Support

Strain Type

Indica 79%Sativa 21%

Strain Data Sheet

🧬THC21% - 25% (High)
🌿LineageLA Confidential × Bubba Kush
🔬TypeAutoflower Indica
🌡ClimateAll Climates (Adaptable)
📅Harvest9 - 11 weeks from seed
📏Height70 - 120 cm
⚖️YieldMedium - High
🏠Yield Indoor320 - 440 g/m²
🌳Yield Outdoor120 - 290 g/plant
Flowering Time9 - 11 weeks (seed to harvest)

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 Australian Commonwealth, state, and territory legislation.
1
A-Train Auto
royalkingseeds.au
IG
FB
X
🔒Sealed for authenticity
💧Waterproof coating
🛡️Aluminium interior lining
🏷️Protective sticker
📱QR code verification
🔢Scratchable serial number

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A-Train Auto — 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
F5
Generations
5+
Breeding Programme
Royal King Genetics Auto Line — recessive trait stabilisation
Stabilisation Notes — What This Means for Your Grow

Five generations of Royal King Genetics autoflower stabilisation on A-Train. Auto trigger time, finish window and trichome saturation all run uniform — no photo-hybrid surprises in the pack.

Breeding Goal

Stabilise the recessive ruderalis trait in A-Train for uniform auto-trigger.

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
19 February 2026· 99%+ germination
RK

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