Think Big Auto by Dutch Passion – XL Yields & Citrus Power in a Compact Autoflower

Think Big Auto by Dutch Passion is a powerhouse autoflower that turns limited space into big harvests—delivering XL yields of dense, trichome-rich buds with a vibrant citrus and incense profile in just 11–13 weeks.

Feeling overwhelmed by autoflowers that promise big but deliver small? You’ve followed guides, tweaked your setup, but still end up with airy buds and disappointing returns. It’s frustrating when your time and effort don’t match the results—especially when you’re working with tight spaces or a short season.

That lack of control doesn’t just waste nutrients and electricity—it kills motivation. You start doubting your skills, wondering if you’ll ever grow a plant that truly impresses. The truth? It’s not you. It’s the genetics. Most autos sacrifice size for speed, leaving you with compact plants and compact yields.

Meet Think Big Auto—a Dutch Passion legend bred from the world-famous Think Different XXL line. This isn’t just another autoflower. It’s a yield monster in disguise: compact enough for stealth grows, yet powerful enough to reward experts with up to 750 g/m². With a stable, bushy structure and a flowering time of 11–13 weeks, it’s designed to thrive indoors and outdoors—no guesswork needed.

Massive Yields from a Compact Plant

Think Big Auto redefines what’s possible in an autoflower. Small in height, huge in output.

• Indoor yields: 500–750 g/m² (17.6–26.5 oz/ft²) with expert care
• Outdoor yield: up to 163 g/plant (5.75 oz/plant) in sunny, dry climates
• Compact height: 0.50–0.75 m (1.64–2.46 ft), rarely exceeding 1 m (3.28 ft)
• Perfect for SOG, multi-tier, and stealth setups

Stable Genetics with a Sativa Kick

Bred from elite Think Different XXL phenotypes, this auto inherits legendary potency and resilience.

• Genetics: Think Different XXL × AK420 (AK47 hybrid)
• Sativa-dominant hybrid with uplifting, creative effects
• High THC content, rich in limonene and pinene terpenes
• Flavor: sweet citrus, zesty lemon, with hints of pine and frankincense

Easy to Grow, Hard to Beat

Whether you're new or experienced, Think Big Auto adapts to your style—no stress, no fuss.

• Low to medium difficulty—forgiving of minor mistakes
• Thrives in soil, coco, or hydro setups
• Resistant to mold and pests when humidity is controlled
• Short internodal spacing creates dense, solid colas

Technical specifications

• Breeder / Brand: Dutch Passion
• Type: Autoflowering
• Dominance: Sativa-dominant hybrid
• Genetics: Think Different XXL × AK420
• Flowering time: 11–13 weeks from seed to harvest
• Indoor yield: 500–750 g/m² (17.6–26.5 oz/ft²)
• Outdoor yield: 100–163 g/plant (3.5–5.75 oz/plant)
• Indoor height: 0.50–0.75 m (1.64–2.46 ft)
• Outdoor height: up to 1.10 m (3.61 ft)
• Difficulty: Low to medium
• Structure: Bushy, compact, short internodes
• Climate: Temperate, Mediterranean; avoid high humidity
• Resistance: Moderate resistance to mold and pests
• Training: Suitable for LST; avoid topping or FIM
• Recommended pot: 18–27 L final pot (early transplant)
• Light: 18–20 h/day or 24/0
• THC: High (approx. 18–22%)
• CBD: Low (approx.
• Aromatic profile: Limonene, pinene, myrcene
• Flavour: Citrus, lemon zest, incense, pine
• Effect: Energetic, creative, social—ideal for daytime or early evening

How to grow Think Big Auto for maximum results

Get the most out of your Think Big Auto with this expert-backed grow guide—simple, effective, and optimized for quality.

Quick overview

Autoflowering sativa hybrid from Dutch Passion. 11–13 week cycle. Compact, high-yielding, ideal for indoor SOG or dry outdoor climates.

• Type: Autoflowering
• Cycle: 11–13 weeks from seed to harvest
• Difficulty: Low to medium
• Ideal setup: Indoor SOG or outdoor in dry, sunny areas

Safe start

Begin strong with fast germination and healthy seedlings.

• Germinate at 22–25 °C with high humidity (70%)
• Use starter cubes or moist paper towel method
• Transplant when radicle reaches ~1 cm (0.4 in)
• For faster rooting, try Root Riot Sponges

Directed growth

Build a strong, bushy plant with even canopy development.

• Use 18–20 h light schedule (or 24/0 if plants tolerate it)
• Start in final 18–27 L pot to avoid transplant stress
• Use well-aerated soil or coco with Bactofil for root health
• Apply light LST to open up side branches

Efficient flowering

Maximize resin and density during bloom.

• Keep RH at 40–50% to prevent mold
• Ensure strong airflow with oscillating fans
• Boost bud density with Top Candy in mid-flower
• Watch trichomes: harvest when milky with some amber

Harvest and refinement

Finish strong with proper drying and curing.

• Flush 7–10 days before harvest
• Dry at 18–22 °C and 50–60% RH for 10–14 days
• Cure in jars for 2–4 weeks, burping daily
• Store in airtight containers away from light

Frequently Asked Questions

How long does Think Big Auto take to harvest?

From seed to harvest, Think Big Auto takes 11–13 weeks. Some phenotypes may finish at 11 weeks, but waiting until week 13 ensures maximum yield and potency.

Is Think Big Auto good for beginners?

Yes. It’s easy to grow, forgiving of minor mistakes, and doesn’t require advanced techniques. Just provide light, water, and time—and it rewards you generously.

Can I top or train Think Big Auto?

Low-Stress Training (LST) is safe and effective. Avoid topping, FIM, or aggressive pruning—autos have a fixed timeline and can’t recover from stress as easily as photoperiods.

What’s the best light schedule for Think Big Auto?

18–20 hours of light per day is ideal. Some growers use 24/0, but watch for light stress. If leaves curl or bleach, reduce intensity or switch to 20/4.

Personal Experience of Pevgrow’s CEO (Alan)

I grew Think Big Auto last summer in my greenhouse, and honestly—it exceeded every expectation. I planted four seeds directly in 20L pots, gave them 20/4 lighting, and minimal intervention. By week 10, the citrus aroma was filling the room. At week 12, the buds were rock-hard, dripping in trichomes. I used a SOG setup, and the yield was insane—over 600 g/m². The high? Super clear, uplifting, perfect for music or creative work. I’ve tried dozens of autos, but this one stands out. My only tip: don’t rush harvest. Let those trichomes go milky-amber. The extra week makes all the difference.