Trainwreck Auto by FastBuds – Fast-Flowering Hybrid with 22% THC & Citrus-Pine Flavor

Trainwreck Auto by FastBuds is a powerful, fast-flowering hybrid that delivers top-tier buds in just 8–9 weeks, perfect for growers who want big yields without the wait.

Feeling overwhelmed by complicated grow schedules and finicky strains? You’re not alone. Many growers jump into cultivation excited, only to face stunted plants, weak yields, or buds that just don’t hit right — not because they’re bad at growing, but because their strain didn’t match their lifestyle. The real problem? Most so-called "easy" autos still demand constant tweaking, leaving you guessing about light cycles, nutrients, and training. And when harvest comes, you’re stuck with airy nugs and faint flavor, wondering if it was even worth it.

That frustration builds. You start doubting your skills. Maybe you’re not cut out for this. But here’s the truth: it’s not you — it’s the genetics. A poorly bred auto won’t deliver, no matter how hard you try. And that lingering disappointment? It kills the joy of growing. You stop experimenting. You stop sharing. You stop believing in the plant.

Meet your new favorite grow: Trainwreck Auto. This isn’t just another fast strain — it’s a precision-engineered hybrid bred over four generations for maximum performance with minimum fuss. From seed to harvest in 63 days, it grows up to 1.20 m (3.94 ft) tall and produces up to 550 g/m² (1.1 oz/ft²) of dense, resin-dripping buds. No special training needed. No light cycle changes. Just plant it, feed it well, and watch it thrive. The complex terpene profile — sharp lemon, earthy pine, spicy pepper — explodes on the inhale and lingers for hours, while the balanced 22% THC high lifts your mood and gently melts away tension.

High Yields Without the Headache

Stop wasting time on underperforming strains. Trainwreck Auto is built for results, not guesswork.

• Produces up to 550 g/m² (1.1 oz/ft²) indoors under optimal conditions
• Reaches 1.20 m (3.94 ft) tall with strong, bushy structure and excellent branch support
• Flowers automatically in 8–9 weeks — no light schedule changes needed
• Thrives in 18–20 hour light cycles, perfect for DNA Genetics setups
• Delivers consistent harvests from seed, thanks to stable autoflowering genetics

Flavor That Hits Hard and Stays

Forget bland, one-note smoke. This strain packs a sensory punch from first spark to final exhale.

• Bursts with bright lemon and pine on the inhale, backed by sweet, spicy undertones
• Leaves a peppery, slightly sour finish that coats the mouth for minutes
• Trichome-covered buds release a pungent, gassy aroma when broken
• Perfect for connoisseurs who value terpene depth and aromatic complexity
• Ideal for making extracts — the resin is thick and abundant

Balanced Effects for Any Time of Day

Too many strains are either too heavy or too spacey. Trainwreck Auto finds the sweet spot.

• Starts with a stimulating, mood-boosting head rush that enhances focus
• Gradually shifts into a calm, centered body relaxation without sedation
• Perfect for unwinding after work while staying alert and present
• Great for social settings or creative sessions where you need clarity
• With 22% THC, it’s potent but manageable — no couch-lock surprises

Technical specifications

• Breeder / Brand: FastBuds
• Type: Autoflowering, Feminized
• Dominance: Hybrid (Sativa 55% / Indica 45%)
• Genetics: Trainwreck × Ruderalis
• Autos: 8–9 weeks from seed to harvest
• Yield Indoor: 350–550 g/m² (0.7–1.1 oz/ft²)
• Yield Outdoor: 60–150 g/plant (2.1–5.3 oz/plant)
• Height Indoor: 70–120 cm (27.56–47.24 in)
• Height Outdoor: 70–120 cm (27.56–47.24 in)
• Difficulty: Low — very beginner-friendly
• Structure and vigour: Tall, bushy, with strong branching and dense internodal spacing
• Ideal climate: Hot to moderate — handles heat well, less tolerant of cold
• Resistance: Moderate resistance to mold and pests; avoid high humidity
• Training: Responds well to LST; avoid topping or FIM (not recommended for autos)
• Recommended pot: 18–27 L final pot for maximum growth
• Light: 18–20 h/day throughout the entire cycle
• Temperature: 22–26 °C (veg), 20–25 °C (flowering)
• Humidity: 60–70% (seedling), 50–60% (veg), 40–50% (flowering)
• pH: 6.0–6.5 (soil), 5.8–6.2 (coco/hydro)
• Smell in grow: High — use a carbon filter to control odor
• THC: 22%
• CBD:
• Aromatic profile: Limonene, Pinene, Myrcene
• Flavour: Lemon, Pine, Spicy, Sweet, Sour
• Effect: Balanced cerebral and body high — uplifting, relaxing, creative

How to grow Trainwreck Auto successfully

Get the most out of your grow with this simple, step-by-step guide tailored to Trainwreck Auto’s needs.

Quick overview

FastBuds’ Trainwreck Auto is a low-difficulty, high-reward autoflower ready in 8–9 weeks.

• Type: Autoflowering, feminized
• Cycle: 63 days from seed to harvest
• Difficulty: Low — perfect for beginners
• Ideal for: Indoor tents, outdoor patios, greenhouse setups

Safe start

Launch your grow with strong germination and early root development.

• Germinate seeds in a moist paper towel at 22–25 °C
• Transplant once the radicle is ~1 cm long
• Use a light, airy soil mix with good drainage
• Water lightly — avoid drowning young roots
• Consider Root It 150ml – Rooting gel to boost early root growth

Directed growth

Set your plant up for success during its stretch phase.

• Provide 18–20 hours of light daily — no changes needed
• Use 18–27 L pots to allow full vertical development
• Apply gentle LST to spread the canopy and increase light exposure
• Feed with mild nutrients — avoid overfeeding
• Ensure good airflow to prevent humidity buildup

Flowering by stages

Maximize bud density and resin production during flowering.

• Early flowering: Maintain 50–60% RH and steady temperatures
• Mid flowering: Reduce RH to 40–50%; add bloom nutrients like Pro Bloom GHE
• Late flowering: Watch trichomes turn milky to amber
• Support heavy colas with stakes if needed
• Flush for 7 days before harvest to improve flavor

Harvest, drying and curing

Finish strong for premium-quality buds.

• Harvest when 70% of trichomes are milky, 30% amber
• Dry slowly at 18–22 °C and 50–60% RH for 10–14 days
• Cure in glass jars for 2–4 weeks, burping daily
• Store in a cool, dark place to preserve terpenes
• Enjoy the full depth of flavor and effect

Frequently Asked Questions

Is Trainwreck Auto good for beginners?

Yes, absolutely. It’s low-maintenance, forgiving of minor mistakes, and doesn’t require advanced techniques like topping or light cycle changes.

How tall does Trainwreck Auto get?

It typically reaches 70–120 cm (27.56–47.24 in), making it suitable for most indoor spaces and discreet outdoor grows.

Does it smell strong during flowering?

Yes, it has a high odor profile. Use a carbon filter or odor neutralizer, especially in enclosed spaces.

Can I grow it outdoors in a cold climate?

It prefers warm to moderate climates. In colder areas, grow it in a greenhouse or during the hottest months for best results.

What’s the best way to increase yield?

Use 18–27 L pots, apply LST early, and feed with quality bloom nutrients. Avoid aggressive pruning, which can stress autoflowers.

Personal Experience of Pevgrow’s CEO (Alan)

I’ve grown a lot of autos, but Trainwreck Auto stands out. I ran three plants in my 1.2 m x 1.2 m tent under a 600W LED, 18/6 light cycle. They stretched hard in week 3, so I did some light LST — nothing aggressive. I used a soil mix with perlite and fed with a simple organic schedule. By week 6, the smell was insane — like lemon cleaner and diesel. I flushed for 7 days, harvested at 63 days, and got 110 g each (3.88 oz). The buds were rock-hard, covered in crystals. The high starts sharp and energetic, then smoothly transitions into deep calm. It’s my go-to for evening relaxation without losing mental clarity. If you want a strain that delivers on every level, this is it.