Northern Lights Auto Royal Queen Seeds – Legendary Indica Power in an Autoflowering Package

Northern Lights Auto seeds by Royal Queen Seeds bring the legendary power of one of the world’s most famous cannabis strains into a modern, low-maintenance autoflowering format—delivering big yields, rich flavor, and deeply relaxing effects with minimal effort.

Does your current strain demand constant attention, or only shine in perfect conditions? What if you could grow a classic, potent indica without the stress of photoperiod lighting or months of waiting? Too often, legendary genetics come with complicated growing requirements, making them inaccessible to beginners or those with limited space.

That hesitation, that fear of failure—it’s real. You don’t want to waste time, money, or energy on a plant that underperforms or breaks easily. The truth is, many so-called 'easy' strains still need precise care, and many powerful ones are too finicky for real-world growing.

Enter Northern Lights Auto: the solution that bridges the gap. This isn’t a watered-down version of the original—it’s the soul of Northern Lights, evolved. With its Afghan indica backbone and smart autoflowering genes, it grows strong and steady, forgiving minor mistakes while still packing serious punch. It’s ready in just 10–12 weeks, produces up to 550 g/m² indoors, and handles everything from indoor tents to unpredictable outdoor climates. Whether you're a novice or a seasoned grower, this strain adapts to you—not the other way around.

What Makes Northern Lights Auto a Grower’s Favorite

From the first sprout to harvest, this strain stands out for its resilience and consistency. It doesn’t just survive—it thrives. With a solid 80% indica dominance, it grows compact and bushy, rarely exceeding 1.20 m (3.94 ft), making it perfect for stealth grows or tight spaces. Its rapid life cycle means you can enjoy multiple harvests per year, even in less-than-ideal climates. And thanks to its strong resistance to mold and pests, it handles humidity and temperature swings better than most—ideal for beginners and outdoor growers alike.

Big Yields Without the Bulk

Don’t let its manageable size fool you—this plant is a production machine. Indoors, under 600W LED, it can deliver up to 550 g/m² (18 oz/ft²), with dense, resin-coated buds forming along every branch. Outdoors, expect 170–220 g/plant (6–8 oz/plant), especially when planted in a sunny spot with good airflow. The secret? A short but intense flowering phase of just 45–55 days, where it focuses energy on bud development, not stretching. Whether you’re growing one plant or a full tent, you’ll be surprised at how much quality flower comes from such a compact, easy-to-manage plant.

Flavor and Effect: The Classic Experience, Perfected

The taste is unmistakably Northern Lights—sweet, earthy, and slightly spicy, with hints of pine and citrus that linger on the palate. The smoke is smooth, never harsh, making it a pleasure to consume. But the real magic is in the effect: a deep, full-body relaxation that melts away tension, paired with a gentle cerebral uplift that keeps your mind at ease. It’s the perfect companion for unwinding after a long day, enhancing your evening chill, or supporting restful sleep—without locking you to the couch. With THC levels up to 14%, it’s potent but not overwhelming, making it ideal for both recreational and wellness-focused users.

Technical specifications

• Breeder / Brand: Royal Queen Seeds
• Type: Autoflowering
• Dominance: Indica 80% / Ruderalis 20%
• Genetics: Northern Light (Afghan) × Ruderalis
• Life cycle: 10–12 weeks from seed to harvest
• Indoor yield: 500–550 g/m² (16–18 oz/ft²)
• Outdoor yield: 170–220 g/plant (6–8 oz/plant)
• Indoor height: 0.90–1.20 m (3–4 ft)
• Outdoor height: 1.30–1.60 m (4.3–5.2 ft)
• Flowering time: 45–55 days
• Difficulty: Low
• Structure: Compact, bushy, strong branching
• Ideal climate: Temperate, Mediterranean, continental
• Resistance: High resistance to mold, pests, and temperature fluctuations
• Training: Suitable for LST and light defoliation; avoid topping
• Recommended pot: 18–27 L final pot
• Light: 18–20 h/day throughout the cycle
• THC: Up to 14%
• CBD: Low
• Aromatic profile: Myrcene, limonene, pinene
• Flavour: Earthy, sweet, citrus, pine, pepper
• Effect: Relaxing, uplifting, body-focused, ideal for evening use

How to Grow Northern Lights Auto for Best Results

Getting the most from your Northern Lights Auto seeds is simple—just follow these key steps to ensure strong growth, maximum yield, and top-tier quality.

Quick overview: autoflowering · Royal Queen Seeds · 10–12 week cycle · low difficulty · ideal for indoor tents and outdoor gardens.

Safe start: germinate in a moist paper towel or starter cube at 22–25 °C and high humidity. Transplant gently once the taproot is ~1 cm long. For a faster, stronger start, Klonagel rooting hormone gel boosts root development and reduces shock.

Stable seedling: keep humidity at 60–70% and temperature at 22–26 °C. Water lightly and ensure good drainage. Use a well-aerated substrate like Coco Kaya 50L Juju Royal Substrate for optimal root health and growth.

Directed growth: maintain 18–20 hours of light daily. Avoid aggressive pruning—use low-stress training (LST) to open the canopy and improve light penetration. Feed with balanced nutrients, increasing PK during flowering.

Flowering by stages: monitor trichomes—harvest when mostly milky with some amber for a balanced effect. Reduce humidity to 40–50% in mid to late flowering to prevent mold. Use Natural Clone de Trabe to support resin production and improve final quality.

Harvest, drying and curing: flush 7–10 days before harvest. Dry slowly at 18–22 °C and 50–60% RH for 10–14 days, then cure in jars for 2–4 weeks, opening daily to release moisture.

Frequently Asked Questions

How long does it take to grow Northern Lights Auto?

From seed to harvest, Northern Lights Auto takes 10–12 weeks. It doesn’t require a change in light cycle, so you can grow it under 18–20 hours of light per day from start to finish.

Is Northern Lights Auto good for beginners?

Absolutely. It’s one of the easiest autoflowering strains to grow, with high resistance to pests and mold, and it forgives minor mistakes in watering or feeding. Its compact size and fast cycle make it perfect for first-time growers.

What kind of yields can I expect outdoors?

Outdoors, you can expect 170–220 g/plant (6–8 oz/plant) in a sunny, warm climate. For best results, plant in a 20–25 L pot with rich, well-draining soil and plenty of light.

Does it smell a lot during flowering?

Yes, especially in the final weeks. The aroma intensifies as trichomes develop. If discretion is a concern, use a carbon filter or grow in a well-ventilated outdoor area away from neighbors.

Can I top or train Northern Lights Auto?

It’s best to avoid topping or FIM, as autoflowers have a fixed timeline and don’t recover well from stress. However, low-stress training (LST) is safe and effective for improving light exposure and yields.

Personal Experience of Pevgrow’s CEO (Alan)

I’ve grown a lot of strains, but Northern Lights Auto holds a special place. I first tried it during a rainy outdoor season in northern Spain, and I was blown away by how resilient it was. While other plants struggled with humidity, this one powered through, producing dense, sticky buds with that classic sweet-earthy punch. I’ve since used it in small indoor tents with 600W LEDs, and the yields were insane—over 500 g/m² with minimal effort. What I love most is how consistent it is: every grow delivers the same smooth smoke and deep relaxation. It’s my go-to for a quick, reliable harvest, especially when I want something potent but not overwhelming. If you’re looking for a strain that just works, this is it.