Trainwreck Auto carries the spirited character of the classic sativa into an autoflowering format. Royal Queen Seeds crossed Trainwreck with Big Skunk Auto, creating an 80% Sativa / 15% Indica / 5% Ruderalis hybrid with THC up to 19% and a terpene mix every bit as intriguing as its photoperiod parent.
There is no light-schedule switch to worry about: run 18/6 or 20/4 from sprout to harvest and the plant flowers on its own. It is not the fastest autoflower on the market, taking around 12 to 13.5 weeks from germination, but its vigor and harvest potential more than justify the extra few days.
Indoor plants stay at a manageable 3 to 4 feet (90–120 cm), and outdoor plants reach 4 to 5 feet (120–150 cm). Expect 16 to 19 oz/m² (455–540 g/m²) indoors and 3 to 6 oz/plant (85–170 g/plant) outdoors, and outdoor growers can still squeeze more than one run into a long, warm season.
The smoke is thick and fragrant, so plan on odor control during late flowering.
Sweet, Peppery Flavor and a Motivating High
Trainwreck Auto layers candy sweetness over earth and pine, with a spicy black pepper undertone that a trained palate picks up right away. It tastes like pine needles and peppercorns dusted with powdered sugar, sweet and sharp in the same breath.
The effect is clear, uplifting and motivating. A few tokes bring happy thoughts and an energetic push, the kind of high that helps you tackle the project you have been putting off. It suits daytime sessions, outdoor walks and creative work.
Growing Trainwreck Auto Seeds
Start seeds in their final containers and keep feeding light during the first weeks. The flowering phase lasts 55 to 65 days, about 8 to 9.5 weeks, and the complete cycle runs 85 to 95 days from germination. The sativa-leaning frame responds well to LST, which flattens the canopy and opens up lower bud sites.
Trainwreck Auto adapts to almost any growing style or environment. Outdoors, it prefers regions with long summers, where the extra warmth helps the colas finish fully. Keep airflow strong in late bloom and harvest when most trichomes have turned milky for the brightest, most energetic effect.
Trainwreck Auto Characteristics
| Strain type | Autoflowering (feminized) |
| Genetics | Trainwreck x Big Skunk Auto |
| Indica/Sativa | 15% Indica / 80% Sativa / 5% Ruderalis |
| THC | Up to 19% |
| CBD | Low |
| Effect | Clear, motivating, uplifting |
| Flavor | Candy, earthy, pepper, pine |
| Indoor yield | 16 to 19 oz/m² (455–540 g/m²) |
| Outdoor yield | 3 to 6 oz/plant (85–170 g/plant) |
| Seed to harvest | 85 to 95 days from germination (12 to 13.5 weeks); flowering 55 to 65 days |
| Height | Indoors 3 to 4 feet (90–120 cm); outdoors 4 to 5 feet (120–150 cm) |
| Climate | Long summers |
| Best cultivation technique | LST, 18/6 or 20/4 light |
FAQ
What are the genetics of Trainwreck Auto?
It is Trainwreck crossed with Big Skunk Auto, giving 80% sativa, 15% indica and 5% ruderalis genetics.
How long does Trainwreck Auto take from seed to harvest?
Plan on 85 to 95 days from germination, roughly 12 to 13.5 weeks. It takes a little longer than many autos but rewards growers with strong yields.
What light schedule suits Trainwreck Auto?
No 12/12 switch is needed. Run 18/6 or 20/4 from seed to harvest.
What effect does Trainwreck Auto have?
It produces a clear, uplifting and motivating high with up to 19% THC, ideal for daytime.
How tall does Trainwreck Auto grow?
Indoors, 3 to 4 feet (90–120 cm). Outdoors, 4 to 5 feet (120–150 cm).
How much does Trainwreck Auto yield?
Expect 16 to 19 oz/m² (455–540 g/m²) indoors and 3 to 6 oz/plant (85–170 g/plant) outdoors.
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