Big Devil 2 Auto® by Sweet Seeds – High-Yielding Autoflowering Feminized Seeds

Big Devil 2 Auto® by Sweet Seeds is a high-yielding, fast-flowering autoflowering strain that delivers dense, resinous buds with a sweet incense aroma and up to 20% THC—ready in just 9 weeks from germination.

Struggling to find an autoflower that actually packs a punch without sacrificing yield or quality?

Most autoflowers leave you with wispy buds, weak effects, or disappointing harvests—especially if you're growing in limited space or less-than-ideal conditions. You end up wasting time, nutrients, and energy on plants that don’t deliver.

Big Devil 2 Auto® isn’t like the rest. Bred by Sweet Seeds as the upgraded evolution of their original Big Devil Auto®, this 3rd-generation autoflower hits harder, smells richer, and produces more. With compact yet tall structure (1–1.5 m) and a flowering time of only 9 weeks, it’s built for growers who want big results without the long wait or complex light schedules.

Massive Harvests Without the Wait

Whether you're growing indoors or outdoors, Big Devil 2 Auto® delivers impressive yields with minimal effort. Its robust genetics thrive in a variety of environments, making it a go-to for both beginners and experienced growers looking for consistency and power.

How to Grow Big Devil 2 Auto® for Maximum Results

1. Start with a final pot of 18–27 L to support its tall growth and vigorous root system.
2. Use a light cycle of 18/6 or 20/4 throughout the entire cycle—no changes needed.
3. Keep humidity at 60–70% during seedling stage, then reduce to 50–60% in veg and 40–50% in flowering.
4. Provide balanced nutrients, but avoid overfeeding—this strain prefers a light hand during flowering.
5. Use LST (low-stress training) early to control height and expose more bud sites to light.
6. Monitor trichomes: harvest when mostly milky with some amber for a balanced, creative-to-relaxing high.

Key Advantages and Benefits of Big Devil 2 Auto®

• Because it’s a 3rd-generation autoflower, you get faster, more stable growth with fewer surprises, which means a smoother, more predictable grow from seed to harvest.
• With THC levels reaching 19–20%, you can enjoy a potent, psychoactive effect that starts creative and uplifting before easing into deep relaxation—perfect for daytime inspiration or evening chill.
• Its sweet, incense-like aroma with skunky undertones delivers a rich sensory experience, which means every session feels premium and satisfying.
• Indoor yields of 400–600 g/m² (1.4–2.1 oz/ft²) and outdoor harvests of 50–300 g/plant (1.8–10.6 oz/plant) mean you’ll fill your jars fast, even in small spaces.
• Standing 1–1.5 m (3.3–4.9 ft) tall, it offers the size of a photoperiod plant with the ease of an autoflower, giving you big yields without the long wait.
• The compact, resin-covered buds are ideal for smoking, vaping, or extraction, which means more ways to enjoy your harvest.

Care, Maintenance and Storage

After harvest, dry your buds slowly at 18–22 °C (64–72 °F) and 50–60% humidity to preserve terpenes and avoid mold. Cure in glass jars for 2–4 weeks, opening daily for the first week to release moisture. Store in a cool, dark place to maintain freshness and potency for months.

• Always flush your plants 7–10 days before harvest to improve flavor and smoothness.
• Use a carbon filter if growing indoors—this strain has a medium-to-high smell during flowering.
• Keep your grow space clean and well-ventilated to prevent mold, especially in humid climates.
• For organic growers, consider using natural amendments like bat guano to boost flowering.

Technical specifications

• Breeder / Brand: Sweet Seeds
• Type: Autoflowering, feminized
• Dominance: Balanced hybrid (48.4% Indica, 48.5% Sativa, 3.1% Ruderalis)
• Genetics / Cross: Evolution of Big Devil Auto® (SWS15)
• Autos: 9 weeks from germination to harvest
• Yield: 400–600 g/m² (1.4–2.1 oz/ft²) indoors; 50–300 g/plant (1.8–10.6 oz/plant) outdoors
• Height: 1–1.5 m (3.3–4.9 ft) indoors and outdoors
• Difficulty: Low to medium
• Structure and vigour: Tall, bushy, with dense lateral branching and high resin production
• Ideal climate: Temperate, Mediterranean; tolerates mild fluctuations
• Resistance: Moderate resistance to mold and pests
• Training: Suitable for LST; avoid topping or FIM due to autoflowering nature
• Recommended pot / substrate: 18–27 L final pot; soil or coco with good drainage
• Light: 18–20 hours of light per day throughout the entire cycle
• Temperature: 22–26 °C (72–79 °F) in veg; 20–25 °C (68–77 °F) in flowering
• Humidity: 60–70% seedling; 50–60% veg; 40–50% flowering
• pH: 6.0–6.5 in soil; 5.8–6.2 in coco/hydro
• Smell in grow: Medium to high—carbon filter recommended
• THC: 19–20%
• CBD: 1.1%
• Aromatic profile: Dominant terpenes include myrcene, limonene, and caryophyllene
• Flavour: Sweet, incense, skunk, with spicy and citrus undertones
• Effect: Balanced—starts cerebral and creative, transitions to relaxed and calming

Frequently Asked Questions

How long does Big Devil 2 Auto® take to grow?

From seed to harvest, Big Devil 2 Auto® takes approximately 9 weeks, making it ideal for fast, successive grows.

Is Big Devil 2 Auto® good for beginners?

Yes, it’s beginner-friendly thanks to its resilience, autoflowering nature, and forgiving growth pattern—just avoid overfeeding.

What does Big Devil 2 Auto® taste like?

It has a rich, sweet flavor with notes of incense and skunk, complemented by spicy and citrus undertones for a complex, memorable smoke.

Can I grow Big Devil 2 Auto® outdoors?

Absolutely. It thrives outdoors in temperate to Mediterranean climates, producing up to 300 g/plant when grown in optimal conditions.

Personal Experience of Pevgrow’s CEO (Alan)

I grew Big Devil 2 Auto® in my 1.2 x 1.2 m tent with a 600W LED and 20/4 light cycle. I used a 20L pot with a soil-coco mix and kept nutrients light—this strain doesn’t like heavy feeding. By week 6, it was already forming dense, sticky buds. I harvested at week 9 with mostly milky trichomes and dried slowly. The high is smooth: first energizing, then deeply relaxing. Compared to other autos, this one stands out for its potency and aroma. My only tip? Train it early with LST—those long side branches turn into monster colas.