Autoflower Comparison

Blue Dream Auto vs Northern Lights Auto

Everything you need to know before buying seeds — THC, yield, difficulty, effects, and the best places to buy in 2026.

Updated June 2026 · Based on verified grow data and community reviews

Quick Comparison

Category
Blue Dream Auto
Northern Lights Auto
Type
Sativa-Dominant Auto
Indica Auto
THC
16–21%
14–19%
Difficulty
Easy
Easy
Yield (Indoor)
350–500 g/m²
350–450 g/m²
Seed to Harvest
9–11 weeks total
9–10 weeks total
Height
70–120 cm
60–100 cm
Effects
Uplifting, creative, gentle euphoria, functional
Relaxing, sleepy, calming, pain relief
Best For
Daytime
Evening
Flavors
Blueberry, sweet, vanilla, berry
Earthy, sweet, pine, spicy

Blue Dream Auto Overview

Sativa-Dominant Auto 16–21% THC Blue Dream × Ruderalis

Blue Dream Auto takes America's #1 selling strain and compresses it into a beginner-friendly autoflower format. The blueberry-vanilla flavor profile and uplifting, creative effects are preserved, while the autoflower genetics make it accessible to first-time growers who don't want to manage light schedules. Available from breeders like Fast Buds, NASC, and others, BD Auto produces slightly taller plants than most autos — inheriting Blue Dream's vigorous growth — while maintaining the ease and speed that make autos attractive. For first-time growers who want a daytime strain, Blue Dream Auto is one of the best choices available.

🌱 Growing Tips

BD Auto grows taller than most autos — use 5 gallon containers and expect 70–120cm height. Gentle LST is recommended to keep the canopy even and increase bud sites. Moderate feeder. The blueberry terpenes develop best with a proper 2–3 week cure. Great for outdoor grows in warm climates. 18/6 or 20/4 light schedule for best results.

Northern Lights Auto Overview

Indica Auto 14–19% THC Northern Lights × Ruderalis

Northern Lights Auto is the simplest path from zero growing experience to quality cannabis. The legendary NL genetics — compact growth, low odor, exceptional mold resistance, and a relaxing indica high — translate perfectly to the autoflower format. This is the strain that grow guides, subreddits, and forums recommend as THE first-ever grow. The plants are nearly impossible to kill, finish fast, and produce buds with the classic earthy-sweet NL flavor that's been winning awards for decades.

🌱 Growing Tips

The easiest auto available. Plant in final container, give 18+ hours of light, feed conservatively. No topping needed. Optional LST. Low odor. Mold-resistant. Fast finishing. Perfect for closets, small tents, and stealth grows.

Head-to-Head Comparison

This is the definitive 'what should I grow first?' comparison for autoflower beginners. The choice maps perfectly to one simple question: do you want a daytime strain or a nighttime strain? Blue Dream Auto provides uplifting, creative, functional effects that make it perfect for daytime use. Northern Lights Auto provides relaxing, sedating effects ideal for evening wind-down and sleep aid. Growing-wise, Northern Lights Auto is slightly easier — more compact, lower odor, and a touch more forgiving. Blue Dream Auto grows taller and yields slightly more but requires a bit more space management. Both are genuinely easy and well-suited for complete beginners. If you're growing your very first cannabis plant ever and want the absolute simplest experience, go NL Auto. If you want a more versatile plant with daytime utility and are comfortable with a slightly taller plant, BD Auto is the choice.

Where to Buy Blue Dream Auto & Northern Lights Auto Seeds

These are the seed banks we recommend based on breeder selection, reliability, and community trust. Affiliate links support this site at no extra cost to you.

OUR TOP PICK

North Atlantic Seed Co (NASC)

Reddit #1

Largest selection from 300+ breeders — the community #1 pick on Reddit

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Multiverse Beans

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ILGM

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Germination guarantee on every order — great for beginners

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Homegrown Cannabis Co

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Kyle Kushman-endorsed seeds with step-by-step growing guides

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Frequently Asked Questions

Northern Lights Auto is the safest recommendation for a very first grow — it's the most forgiving, most compact, and lowest-odor option. Blue Dream Auto is also excellent for first grows but grows slightly taller and benefits from basic LST training.
Northern Lights Auto is perfect for closets — compact plants (60–100cm) with low odor. Blue Dream Auto can work in closets but may get taller (up to 120cm), so make sure you have adequate vertical space and consider gentle LST to keep height manageable.
From a single plant under decent indoor lights: NL Auto produces 50–150 grams, BD Auto produces 60–200 grams. Multiple plants in a proper setup with good lighting will be at the upper range. Outdoor yields depend heavily on climate and sun exposure.
Any grow light works for autoflowers — they're not light-cycle dependent. LED panels in the 100–300W range work great for 1–4 auto plants. Keep lights on 18–20 hours per day for best results. Unlike photoperiod strains, you never need to switch to 12/12.

The Verdict

Choose Blue Dream Auto if…

you want daytime effects, higher yields, and the blueberry flavor of America's most popular strain in an easy auto format

Choose Northern Lights Auto if…

you want the absolute simplest first grow possible, nighttime relaxation effects, and the most compact, stealthy plant available

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