Big Devil F1 Fast Version by Sweet Seeds – Fast-Flowering Sativa Hybrid for High Yields

Big Devil F1 Fast Version by Sweet Seeds is a photoperiod feminized powerhouse that delivers massive harvests of dense, resin-coated buds in record time, perfect for growers who want top-tier sativa effects without the long wait.

Are you tired of waiting months for your sativa to finish flowering?

Most sativa-dominant strains take forever to mature, leaving you in a cycle of endless waiting, uncertain yields, and inconsistent results. You plan your grow, invest your time and energy, only to end up with underwhelming harvests or plants that stretch out of control.

What if you could get the same cerebral punch and aromatic complexity in half the time?

That constant delay kills momentum. It means fewer harvests per year, more risk of mold or pests, and a lot of wasted potential. You start doubting your setup, your nutrients, even your skills—when the real issue is the genetics. Most sativas just aren’t built for speed and stability.

Big Devil F1 Fast Version gives you fast, predictable, high-yielding harvests without sacrificing quality

This photoperiod feminized hybrid cuts the flowering time down to just 8–9 weeks while delivering up to 650 g/m² of dense, trichome-rich buds. It keeps the legendary sweet, incense-laced flavor of the original Big Devil Auto but with better structure, higher yields, and full control over your light cycle.

Why Big Devil F1 Fast Version delivers faster, more reliable results

Bred from elite Big Devil Auto genetics crossed with a top-shelf photoperiod clone, this strain combines speed with stability. It develops a strong central stem and long lateral branches, creating a perfect canopy for even light distribution. The flowering phase kicks in fast and finishes clean, so you’re not left guessing when to harvest.

Factors that influence your harvest and how to control them

• Light cycle: Use 18/6 during veg and switch to 12/12 to trigger flowering—full control over timing.
• Pot size: Use 11–20 L containers depending on space to balance growth and manageability.
• Training: Responds well to LST and SCROG—maximize yield without stress.
• Climate: Prefers 22–26 °C in veg and 20–25 °C in flower with 40–50% humidity.
• Nutrients: Feed progressively—start light, increase during flowering, especially with bloom boosters.
• Support: Use stakes or trellis netting early—this plant gets tall and heavy.
• Smell control: High odor output—pair with a carbon filter from our grow shop for discretion.

Recommended routine for consistent, top-shelf harvests

1. Start with high-quality seeds and germinate in a moist, warm environment.
2. Transplant carefully into airy soil or coco—consider Premium Coco Substrate Pre-Fertilized Plagron for strong roots.
3. Apply gentle LST during early veg to shape the plant and improve light access.
4. Switch to 12/12 lighting to initiate flowering after 4–6 weeks of growth.
5. Monitor trichomes—harvest when mostly milky for a cerebral high, or amber for relaxation.
6. Flush nutrients 7–10 days before harvest to improve flavor and smoothness.
7. Cure buds slowly in airtight jars for 2–4 weeks to enhance aroma and potency.

Advantages of growing a fast, high-yielding sativa

• More harvests per year—up to 3–4 indoor cycles possible.
• Higher yields: 500–650 g/m² (1.76–2.30 oz/ft²) indoors, more outdoors with optimal conditions.
• Better control over plant shape and size with training techniques.
• Superior resin production—great for extracts and concentrates.
• Distinctive sweet-skunk-incense aroma that fills the room at harvest.
• Powerful, creative sativa effect—perfect for daytime or social use.
• Consistent phenotypes—less guesswork, more reliability.

Technical specifications

• Breeder / Brand: Sweet Seeds
• Type: Feminized photoperiod
• Dominance: Sativa-dominant hybrid (65% sativa / 35% indica)
• Genetics: Selected Big Devil Auto × Elite photoperiod clone
• Flowering time: 8–9 weeks
• Indoor yield: 500–650 g/m² (1.76–2.30 oz/ft²)
• Outdoor yield: Maximum production (approx. 600–800 g/plant or 21.17–28.22 oz/plant)
• Indoor height: 80–110 cm (31.50–43.31 in)
• Outdoor height: 1.10–1.60 m (3.61–5.25 ft)
• Difficulty: Medium
• Structure: Strong central stem, long side branches, moderate stretch
• Climate: Temperate, Mediterranean
• Resistance: Moderate resistance to mold and pests
• Training: Suitable for LST, SCROG, topping
• Substrate: Soil or coco with good aeration
• Light cycle: 18/6 (veg), 12/12 (flower)
• THC: 15–25%
• CBD: 1.5%
• Aroma: Sweet, skunk, incense
• Flavor: Sweet, incense, citrus
• Effect: Cerebral, creative, energizing—ideal for daytime use

How to grow Big Devil F1 Fast Version for maximum yield

Quick overview: feminized photoperiod from Sweet Seeds, 8–9 week flower, medium difficulty, ideal for indoor and outdoor in temperate climates.

Safe start: Germinate in a moist paper towel at 22–25 °C. Transplant once the taproot is ~1 cm long.

• Use a well-draining seedling mix to prevent damping off.
• Keep humidity at 60–70% for the first week.
• Provide gentle light (LED or CFL) to avoid stretching.
• Consider Root Riot Sponges for faster, stress-free rooting.
• Avoid overwatering—let topsoil dry slightly between waterings.

Directed growth: Use 18/6 light cycle and train early for maximum yield.

• Apply LST to spread the canopy and expose lower buds.
• Use 11–20 L pots depending on space and desired plant size.
• Feed with balanced nutrients—Soil Nutrition A+B supports healthy green growth.
• Ensure good airflow to strengthen stems and prevent mold.
• Top once if you want multiple main colas.

Efficient flowering: Switch to 12/12 and boost bloom with the right additives.

• Support heavy branches with stakes or netting early.
• Reduce humidity to 40–50% to prevent bud rot.
• Incorporate a bloom booster like Bloom Stimulator B'Cuzz for denser buds.
• Monitor trichomes weekly—harvest when milky to amber.
• Flush with plain water 7–10 days before harvest.

Frequently Asked Questions

What should I do if my plant stretches too much during flowering?

Some stretch is normal, especially in sativas. Use LST or trellis netting during pre-flower to control height. Avoid topping during flowering as it can stress the plant.

How do I know when to harvest Big Devil F1 Fast Version?

Check the trichomes with a jeweler’s loupe. Harvest when most are milky white for a cerebral high, or wait until some turn amber for a more relaxing effect.

Can I grow this strain outdoors in a colder climate?

Yes, but aim for a spring or early summer start. It thrives in Mediterranean or temperate zones. In cooler areas, use a greenhouse for protection and warmth.

Why are my buds not as dense as expected?

Density depends on light, nutrients, and airflow. Ensure your plant gets strong light, use a bloom booster, and maintain proper humidity to avoid airy buds.

Personal Experience of Pevgrow’s CEO (Alan)

Big Devil F1 Fast Version is one of those rare strains that just clicks. I’ve tested dozens of sativas, but this one delivers consistent, high-yielding results every single time. I grew it indoors under LEDs with a 12/12 cycle, and it finished in exactly 9 weeks—no guesswork. The buds were rock-hard, dripping with resin, and smelled like sweet incense and citrus. I used LST and a SCROG net, which doubled my yield. The high is super clear and creative—perfect for writing or social vibes. I’ve shared it with friends who usually prefer indicas, and they were blown away. If you want a fast, powerful sativa that doesn’t cut corners, this is it.