Emerald Fire OG Auto · Humboldt Seeds · Premium Autoflowering Cannabis Seeds

The Emerald Fire OG Auto from Humboldt Seeds is your express ticket to harvesting legendary OG Kush genetics without waiting for light cycles to change. This autoflowering powerhouse combines the iconic West Coast lineage with the convenience of automatic flowering, delivering dense, frosty buds packed with that signature fuel and pine aroma you crave.

Ever feel like you're stuck waiting forever for your photoperiod plants to finally flip into flower? That endless vegetative stretch, the constant light schedule monitoring, and the patience required can test even the most dedicated grower. It's frustrating when you want results, not a months-long commitment just to see buds form.

This waiting game not only delays your harvest but also complicates your grow setup, requiring strict light control and more space for that extended veg period. You miss out on quick turnarounds and the simplicity of a set-it-and-forget-it approach, leaving you with a more complex, time-consuming project than you bargained for.

Emerald Fire OG Auto solves this by cutting straight to the chase. Its autoflowering genetics trigger flowering based on age, not light, shaving weeks off your total grow time. You get the same potent, aromatic OG experience in a compact, fast-finishing package that's perfect for continuous harvests or limited spaces.

Master the Quick Turnaround Grow

Growing Emerald Fire OG Auto is about embracing efficiency. Its autoflowering nature means you can run multiple cycles per year, especially indoors. The plant stays manageable, typically reaching 80–100 cm (31.50–39.37 in) indoors, making it ideal for discreet setups or sea of green (SOG) methods.

1. Start Smart: Germinate seeds directly in their final pots (18–25 L / 4.76–6.60 gal recommended) to avoid transplant shock. A light, airy substrate like our premium soil mixes provides the perfect foundation.
2. Light It Up: Run an 18/6 or 20/4 light schedule from day one. Consistent light fuels its rapid lifecycle.
3. Feed for Speed: Use a balanced, light nutrient regimen from the start. Autoflowers have a short veg phase, so don't overdo nitrogen. A simple two-part base nutrient is often enough.
4. Low-Stress Training (LST): Gently bend and tie down main branches early to open up the canopy and promote multiple colas. Avoid topping or heavy defoliation, which can stunt autos.
5. Monitor Transition: Flowering begins automatically around weeks 3-4. Increase phosphorus and potassium feeds to support bud development.
6. Finish Strong: In the final weeks, watch trichomes closely. Flush with plain water for 7-10 days before harvest for a cleaner taste.
7. Harvest & Cure: Chop when most trichomes are milky with some amber. Dry slowly at 16-20°C (60-68°F) and 50-60% RH, then cure for 2-4 weeks for peak flavor.

Why Your Garden Needs This Strain

Choosing Emerald Fire OG Auto isn't just about growing weed; it's about upgrading your entire cultivation experience with tangible benefits.

• Time is Everything: Its autoflowering gene means you're harvesting in about 9-10 weeks from seed, not 4+ months. This lets you run more cycles per year or get a quick harvest before seasons change.
• Potency Meets Convenience: You get the heavy, relaxing body high and cerebral buzz of classic OG Kush without the long wait. It's perfect for unwinding after a long day.
• Discreet and Manageable: With a moderate indoor height, it fits in tents, closets, or on balconies without towering over your fence, offering greater grow-site flexibility.
• Forgiving for Beginners: The automatic flowering removes the most common timing mistake for new growers—missing the flip to 12/12. It's more resilient to minor light schedule hiccups.
• Aroma Containment: While it carries that classic OG fuel and pine scent, its compact size and faster cycle can make managing odors with a carbon filter more straightforward than a large, long-flowering photoperiod.
• Consistent Results: Humboldt Seeds' stable genetics ensure predictable growth patterns and reliable outcomes, harvest after harvest.

Technical Specifications

• Breeder / Brand: Humboldt Seeds
• Type: Autoflowering
• Dominance: Indica-dominant hybrid
• Genetics: Emerald Fire OG (Fire OG x SFV OG Kush) x Ruderalis
• Cycle: Approximately 9-10 weeks from seed to harvest
• Yield Indoor: 400-550 g/m² (approx. 11.57-15.87 oz/ft²)
• Yield Outdoor: 60-100 g/plant (approx. 2.12-3.53 oz/plant)
• Height Indoor: 80-100 cm (31.50-39.37 in)
• Height Outdoor: 100-130 cm (39.37-51.18 in)
• Difficulty: Medium
• THC: High (Approx. 20-25%)
• CBD: Low (
• Aromatic Profile: Dominant notes of fuel, pine, earth, with hints of citrus and spice.
• Effect: Potent, relaxing body high coupled with a strong cerebral buzz. Ideal for evening use.

Frequently Asked Questions

How long does Emerald Fire OG Auto take to grow?

From seed to harvest, expect about 9-10 weeks under optimal conditions. This fast turnaround is a key advantage of autoflowering strains.

Can I grow this strain outdoors?

Absolutely. It performs well in a sunny, Mediterranean-like climate. Plant in spring or early summer for a harvest before autumn rains. Its moderate height helps with discretion.

Is topping recommended for this auto?

Topping is generally not recommended for autoflowers as it can stress the plant and reduce final yield during its short lifecycle. Low-Stress Training (LST) is a much better technique to maximize light exposure and cola development.

What nutrients work best?

A balanced nutrient line designed for autoflowers or cannabis is ideal. Start at 1/4 strength and increase gradually. Avoid overfeeding, especially nitrogen, during flowering. For robust growth, consider a root stimulator like RhizoBeta from Agrobeta early on.

When should I harvest for the best effect?

For a more energetic, cerebral high, harvest when trichomes are mostly milky white. For a heavier, more sedative effect, wait until 20-30% of the trichomes have turned amber. Use a jeweler's loupe to check.

Personal Experience of Pevgrow’s CEO (Alan)

I've run a few cycles of Emerald Fire OG Auto in my personal tent, and it's become a favorite for testing new autoflowering techniques. What strikes me first is how faithfully it captures the OG Kush aroma—that intense fuel and pine scent fills the room during the last few weeks of flowering, so a good carbon filter is non-negotiable. The plant structure is robust and bushy, responding incredibly well to gentle LST. I like to start bending the main stem early to create an even canopy, which it handles without slowing down.

Compared to other autos, its bud density is impressive; the colas harden up nicely and don't get airy. The yield for an auto is very respectable. In terms of feeding, I found it prefers a lighter touch. I use a simple base nutrient and only add a PK booster during weeks 5-6 of flowering, which seems to maximize resin production without risking nutrient burn. The final smoke is exactly what you'd hope for: a potent, long-lasting stone that's deeply relaxing but not couch-locking if harvested at the right time. It's a fantastic choice for someone who loves classic OG effects but values speed and simplicity.