Purple Trainwreck cannabis seeds packaging — Royal King Seeds UK
Hybrid
THC 23%
🎨 Creative
HybridFeminisedIn Stock

Purple Trainwreck Feminised

Feminised PhotoperiodSee Lab Report →

Purple Trainwreck Feminised cannabis seeds for UK growers. Hybrid · 23% THC · euphoric, relaxed, uplifted. Discreet UK delivery, priced in GBP.

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Royal King Genetics — 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 2026-09-04 on 150 seeds.

Germination rate: 97.6% (n=150)
Last QC test date: 2026-09-04
Indoor yield: 402-574 g/m² (avg across 6 verified grower reports)
Outdoor yield: 592-794 g/plant (avg across 9 verified grower reports)

About Purple Trainwreck Feminised

Read Purple Trainwreck backwards from the harvest: 400-600 g/m2 under lights, 1000-2000 g/plant outdoors, with resin filling out towards 23% THC. Weight goes on evenly across the 58-63 days of bloom, with a clear surge in the last two weeks that rewards leaving the plant alone. The 50/50 split gives you calyx density and an even spread of resin rather than one at the cost of the other. Outdoors, late September to mid-October is the window that misses the wettest of the finish across most of the country while still letting the caryophyllene arrive.

Getting the weight out of this plant

Three stretches of the 58-63 days of bloom decide whether you reach the top of this strain's range (400-600 g/m2 indoors, 1000-2000 g/plant outdoors). The rest is maintenance.

The first ten days of flower. What the plant does during the stretch sets canopy height, and canopy height sets how evenly the light lands. Somewhere around a third is typical. One pass of low-stress training over the tallest shoots keeps the top flat.

Weeks three to five. Caryophyllene production climbs through here, and it responds to a day-night temperature gap of 6-8°C. British autumn nights hand that to outdoor growers for free from September; indoors you have to build it, at roughly 25-26°C lights-on and 18-20°C lights-off. Bloom feed goes potassium-heavy around EC 1.6-1.8.

The last ten to fourteen days. Stop feeding and run pH-corrected water. Check trichomes daily under a 60x loupe — cut at 10-15% amber for the middle of the range. Outdoors that lands between late September and mid-October across most of Britain, and the weather forecast should get a vote.

Flowering: 58-63 days. Indoor yield: 400-600 g/m2. Outdoor yield: 1000-2000 g/plant. Rated intermediate difficulty.

Flavour, aroma and effect

Purple Trainwreck arrives in stages. The first draw at 23% THC brings dry pepper that registers at the back of the throat. The euphoric, relaxed, uplifted character follows within minutes, as a head and body effect at once. The mind stays clear while the muscles let go by degrees, which is what makes it adaptable — a small dose carries an afternoon, a larger one turns into an evening. The limonene underneath adds a lift that stops it turning heavy.

Terpene breakdown

Primary: Caryophyllene · Secondary: Limonene · Tertiary: Myrcene. 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. Caryophyllene anchors the aroma, limonene occupies the middle, and myrcene sits behind both — which is the part that separates this strain from others sharing its primary terpene.

Who it suits

Who does well with Purple Trainwreck? 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

🤗Euphoric
74% of people reported feeling Euphoric
😌Relaxed
65% of people reported feeling Relaxed
😎Uplifted
58% of people reported feeling Uplifted
😊Happy
51% of people reported feeling Happy
🤩Creative
50% of people reported feeling Creative
🤤Hungry
41% of people reported feeling Hungry
😴Sleepy
38% of people reported feeling Sleepy
😆Giggly
31% of people reported feeling Giggly
🧠Focused
21% of people reported feeling Focused

Strain Type

Indica 50%Sativa 50%

Strain Data Sheet

🧬THC23% - 27% (High)
🌿LineageTrainwreck × Mendocino Purps
🔬TypeFeminised Hybrid
🌡ClimateTemperate, adaptable
📅HarvestLate Sept – Oct, UK outdoor (typical)
📏Height100 – 160 cm (typical)
⚖️YieldHigh
🏠Yield Indoor400-600 g/m2
🌳Yield Outdoor1000-2000 g/plant
⏱Flowering Time58-63 days

Packaging

Resealable +
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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.
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Purple Trainwreck Feminised
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Purple Trainwreck Feminised — 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
BX2
Generations
3+
Breeding Programme
Two-Generation Backcross Programme — recurrent-parent fixing
Stabilisation Notes — What This Means for Your Grow

A modern 2010s production hybrid carrying at least one clone-only parent. BX2 is the right stabilisation point: two rounds of backcross fix the parent-cut traits without narrowing the population too far.

Breeding Goal

Fix parent-cut traits in Purple Trainwreck without narrowing the population too far.

Selection Focus

Chosen for vigour, terpene saturation and a tight finish window that allows production planning.

Pollen / Mother Source

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

Last Batch QC Verified
18 September 2026· 99%+ germination