Auto MAC #1 by Dutch Passion – XL Autoflowering Hybrid with 25% THC & Frosty Buds

Auto MAC #1 by Dutch Passion is a high-octane autoflowering hybrid that delivers XL yields of frosty, trichome-bombed buds with THC levels hitting up to 25% under optimal conditions—making it one of the most potent autoflowers you can grow at home.

Are you tired of weak, underwhelming autoflowers that barely pass the 15% THC mark and leave you with airy, leafy buds? What if your next grow could deliver dense, commercial-grade nugs that stick to your fingers and hit like a sledgehammer—without needing a PhD in plant training?

With Auto MAC #1, you’re not just upgrading your stash—you’re unlocking a new standard of potency, yield, and ease. Born from the legendary Miracle Alien Cookies and stabilized with Dutch Passion’s elite Auto Think Different, this strain doesn’t just grow fast—it grows smart. No more wasted cycles on unstable genetics or disappointing harvests. This is the autoflower that finally bridges the gap between amateur convenience and pro-level results.

Technical specifications

• Breeder / Brand: Dutch Passion
• Type: Autoflowering
• Dominance: Hybrid (Indica/Sativa balanced)
• Genetics / Cross: Miracle Alien Cookies × Auto Think Different
• Autos: 10–12 weeks from seed to harvest
• Yield (Indoor): 450–500 g/m² (16–18 oz/ft²)
• Yield (Outdoor): 100–200 g/plant (3.5–7 oz/plant)
• Height (Indoor): 75–85 cm (2.46–2.79 ft)
• Height (Outdoor): 80–110 cm (2.62–3.61 ft)
• Difficulty: Low to medium
• Structure and vigour: Compact internodal spacing, strong branching, moderate stretch
• Ideal climate: Temperate to Mediterranean; tolerates heat, avoid high humidity
• Resistance: Moderate resistance to pests and water stress; avoid high humidity to prevent mold
• Training: Suitable for LST and SCROG; avoid topping or FIM due to autoflowering nature
• Recommended pot: 18–27 L final pot early; soil or coco with excellent aeration
• Light: 20/4 or 18/6 throughout entire cycle
• Temperature: 22–26 °C (71.6–78.8 °F) in veg; 20–25 °C (68–77 °F) in flower
• 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 carbon filter recommended
• THC: 20–25%
• CBD:
• Aromatic profile: Dominant terpenes: caryophyllene, limonene, myrcene
• Flavour: Sweet, floral, spicy, with earthy and pine undertones
• Effect: Powerful hybrid high – euphoric, uplifting, followed by relaxing body buzz; ideal for evening use

Grow guide: How to get the most from Auto MAC #1

Auto MAC #1 thrives with minimal intervention, but a few smart moves can push it from great to legendary. Here’s how to nail it every time.

Quick overview: Dutch Passion’s autoflowering hybrid, 10–12 week cycle, low-maintenance with high reward potential. Ideal for indoor tents or sunny outdoor spots.

Safe start: Germinate in a moist, dark environment at 22–25 °C. Transplant gently once the taproot is ~1 cm long.

• Use a light, airy soil mix with perlite for drainage
• Keep humidity high (70%) in the first 3–5 days
• Consider using Seedbox Plagron to boost early root development
• Avoid overwatering—let topsoil dry slightly between waterings
• Don’t stress young plants with nutrients or training

Stable seedling: Focus on root health and steady growth during weeks 1–3.

• Maintain 20–22 hours of light daily
• Water with mild, pH-balanced water (6.0–6.5)
• Add Atazyme to improve nutrient uptake and root resilience
• Keep temps stable (22–26 °C) and avoid cold drafts
• Defoliate only lower leaves if they block airflow

Directed growth: Weeks 4–6 are critical for structure and canopy control.

• Use LST to spread branches and expose lower buds to light
• Switch to a bloom-focused nutrient line early
• Support heavy colas with soft ties or trellis netting
• Ensure strong airflow to prevent mold on dense buds
• Keep EC progressive—start low, increase gradually

Efficient flowering: Weeks 7–11 bring swelling buds and peak resin production.

• Lower humidity to 40–50% to avoid bud rot
• Reduce nitrogen; boost PK with Plagron Mega Worm for denser flowers
• Stop feeding 10–14 days before harvest
• Flush with plain water to improve taste and smoothness
• Monitor trichomes: harvest when milky with some amber for balanced effect

Frequently Asked Questions

How long does Auto MAC #1 take from seed to harvest?

Auto MAC #1 typically matures in 10–12 weeks from seed to harvest. Indoor grows usually finish in 11 weeks, while outdoor plants may take up to 13 weeks depending on climate.

What yield can I expect from Auto MAC #1?

Indoors, expect 450–500 g/m² (16–18 oz/ft²). Outdoors, each plant can produce 100–200 g (3.5–7 oz), with optimal conditions pushing yields even higher.

Is Auto MAC #1 good for beginners?

Yes, it’s beginner-friendly due to its stability, resistance, and low need for training. Just avoid overwatering and high humidity, and you’ll be rewarded with top-shelf buds.

Does Auto MAC #1 smell strong during flowering?

Yes, it has a high odor profile—sweet, spicy, and pungent. Use a carbon filter if growing indoors to stay discreet.

Can I top or FIM Auto MAC #1?

It’s not recommended. As an autoflower, it has a fixed life cycle. Aggressive pruning can stress the plant and reduce yields. Stick to LST and light defoliation instead.

Personal Experience of Pevgrow’s CEO (Alan)

Look, I’ve grown a lot of autoflowers—some were fussy, some were weak, and most didn’t live up to the hype. But Auto MAC #1? This one’s different. I ran it in my 1.20 x 1.20 m (3.94 x 3.94 ft) tent under a 215W SANlight Q6W with a 20/4 cycle. Grew in a 50/50 mix of lightmix and coco, with BAC nutrients and BioTabs. No topping, no SCROG—just light LST and minimal intervention.

By week 6, the canopy was flat and even, all buds within perfect light range. The smell kicked in hard around week 7—my entire grow room smelled like alien cookies and pine. At harvest (week 11), I had one massive central cola and a ring of dense side buds. After drying and curing, I got 90 g (3.17 oz) of rock-hard, frost-covered nugs. The high? Immediate, euphoric, and long-lasting. One puff and I was on the couch, grinning like an idiot. My friends could smell it from the driveway. If you want an autoflower that hits like a photoperiod, this is it. No compromises.