Sensi Supreme Jack Autoflowering Seeds – F1 Hybrid Power with XXL Yields & Balanced 50/50 Effects

Sensi Supreme Jack Autoflowering Seeds are a game-changing F1 hybrid that delivers massive yields, rock-solid genetics, and a perfectly balanced high—all in an easy-to-grow autoflowering package.

Stuck using regular seeds that give you inconsistent plants and endless phenotype hunting? You’re not alone. Most growers waste time and space on unstable genetics that never reach their full potential. That means wasted nutrients, wasted light, and wasted harvests.

What if you could grow seeds that perform like clones—but from seed? That’s exactly what Sensi Supreme Jack Autoflowering offers. This F1 hybrid eliminates guesswork with uniform growth, explosive vigor, and XXL harvests in just 55–65 days. Whether you're growing indoors or outdoors in cooler climates, this strain adapts effortlessly and delivers top-shelf results every time.

Indoor Powerhouse: Big Yields in Tight Spaces

When space is limited but quality isn’t, Sensi Supreme Jack Autoflowering shines. It grows tall—up to 1.30 m (4.27 ft)—but stays manageable thanks to its autoflowering nature. Indoors, you’ll get dense, trichome-coated colas that pack a serious punch.

With yields reaching 325–400 g/m² (11.5–14.1 oz/ft²), this strain dominates under LED or HPS lighting. Its sativa-leaning structure fills the canopy, but the single main cola makes training simple. Use low-stress techniques like LST to spread the top and maximize light exposure without stressing the plant.

Keep humidity around 50% during flowering and maintain temperatures between 20–25 °C. For best results, start in a final 18–27 L pot to avoid transplant shock. Pair it with Plagron Power Roots at germination to supercharge early root development and set the stage for explosive growth.

Outdoor Warrior: Cold-Resistant & Fast Finishing

Don’t let short summers stop you from growing premium genetics. Sensi Supreme Jack Autoflowering thrives in cool, damp climates where other strains would fail. Thanks to its Northern Lights and ruderalis heritage, it’s naturally mold-resistant and finishes fast—perfect for northern Europe or high-altitude grows.

Outdoors, expect plants to reach up to 1.40 m (4.59 ft) and produce 275–350 g (9.7–12.3 oz) per plant. The thick layer of trichomes protects against light rain and pests, while the compact flowering time avoids late-season humidity spikes.

Plant in well-draining soil rich in organic matter. A pH between 6.0–6.5 ensures optimal nutrient uptake. For added resilience, apply Proactive BAC during veg to strengthen root microbiology and boost natural defenses against fungi and stress.

How to Choose the Best Use for You

Whether you're a stealthy solo grower or a full-scale cultivator, Sensi Supreme Jack Autoflowering adapts to your style. Here’s how to pick your perfect setup:

• If you’re more of an indoor grower, go for a controlled environment with full-spectrum LEDs and precise climate control.
• If you’re outdoors, choose a sunny spot with good airflow and use natural mulch to regulate soil temperature.
• If you’re a beginner, start with a 20 L pot and a simple nutrient line—this strain forgives minor mistakes.
• If you’re advanced, experiment with SCROG or heavy LST to maximize yield potential.
• If you value consistency, F1 hybrids like this eliminate phenotype variation—every plant performs like the last.

Advantages and benefits that show up in every case

• Uniform growth—no more guessing which plant will be the winner
• 30% faster development thanks to F1 hybrid vigor
• XXL yields whether grown indoors or outdoors
• Natural resistance to mold and pests
• 55–65 day flowering time—harvest up to 3 times per year outdoors
• 20% THC for a potent, balanced high
• Pine-citrus aroma that evolves into spicy, herbal notes when smoked

Technical specifications

• Breeder / Brand: Sensi Seeds (Sensi Supreme)
• Type: Autoflowering, Feminized
• Dominance: 50% Indica / 50% Sativa Hybrid
• Genetics / Cross: (Jack Herer × Cinderella Jack) × Northern Lights
• Autos: 55–65 days from germination to harvest
• Yield: 325–400 g/m² indoors (11.5–14.1 oz/ft²); 275–350 g/plant outdoors (9.7–12.3 oz)
• Height: 1.00–1.30 m indoors (3.28–4.27 ft); up to 1.40 m outdoors (4.59 ft)
• Difficulty: Low – ideal for beginners
• Structure and vigour: Lanky with good internodal spacing, strong stem, high branching
• Ideal climate: Cool / Cold, Temperate, Mediterranean
• Resistance: High resistance to mold, mildew, and cold stress
• Training: Suitable for LST and SCROG; avoid topping or FIM
• Recommended pot / substrate: 18–27 L final pot; soil or coco with excellent drainage
• Light: 18–20 hours daily throughout the cycle
• Temperature: 22–26 °C (veg), 20–25 °C (flowering)
• Humidity: 60–70% (seedling), 50–60% (veg), 40–50% (flowering)
• pH: 6.0–6.5 (soil), 5.8–6.2 (coco/hydro)
• Smell in grow: High – use a carbon filter in enclosed spaces
• THC: 20% (average)
• CBD: approx. 1%
• Aromatic profile: Dominant terpenes: myrcene, pinene, caryophyllene
• Flavour: Pine, citrus, spicy, herbal, floral
• Effect: Balanced cerebral euphoria followed by mellow body relaxation – ideal for daytime or evening use

How to grow Sensi Supreme Jack Autoflowering Seeds

Get the most out of your Sensi Supreme Jack Autoflowering seeds with this expert grow guide.

Quick overview: F1 autoflower from Sensi Seeds, 55–65 day cycle, low difficulty, ideal for indoor and outdoor cool climates.

Safe start: Germinate in a moist, dark environment at 22–25 °C.

• Use jiffy pellets or paper towel method
• Transplant when radicle is ~1 cm long
• Avoid deep planting to prevent stem rot
• Plagron Power Roots boosts early root growth

Stable seedling: Protect young plants from overwatering and light stress.

• Water lightly every 2–3 days
• Keep humidity at 60–70%
• Use low-intensity lighting (CFL or T5)
• Apply Proactive BAC to strengthen root microbiome

Directed growth: Maximize structure with proper pot size and training.

• Start in final 18–27 L pot to avoid transplant shock
• Use LST to spread the canopy early
• Maintain 18–20 h light cycle
• Feed with mild nutrients—autos hate excess N

Flowering by stages: Support bud development and prevent mold.

• Keep RH at 40–50% to avoid botrytis
• Ensure strong airflow with oscillating fans
• Add bloom booster at peak flowering
• Use SensiZym to break down dead roots and improve nutrient uptake

Harvest, drying and curing: Lock in flavor and potency.

• Harvest when trichomes are milky white with slight amber
• Flush 7–10 days before harvest
• Dry at 18–22 °C and 50–60% RH for 10–14 days
• Cure in glass jars for 2–4 weeks, burping daily

Frequently Asked Questions

Are Sensi Supreme Jack Autoflowering seeds good for beginners?

Yes, they’re perfect for beginners. They’re easy to grow, don’t require light cycle changes, and are naturally resistant to mold and pests. Just keep watering consistent and avoid overfeeding.

What kind of high does Sensi Supreme Jack give?

It delivers a balanced 50/50 high: starts with a clear, uplifting cerebral buzz that’s great for creativity or socializing, then gently transitions into a relaxed, mellow body stone—without couch-lock.

Can I grow this strain outdoors in a cold climate?

Absolutely. Thanks to its Northern Lights and ruderalis genes, it’s highly resistant to cold and damp conditions. It finishes fast, so it avoids late-season mold issues common in cooler regions.

How much yield can I expect outdoors?

You can harvest 275–350 g (9.7–12.3 oz) per plant outdoors under good conditions. Maximize yield by planting in full sun and using organic soil amendments.

Does this strain smell strong during flowering?

Yes, it has a high odor profile with pine, citrus, and spicy notes. If growing indoors or in a discreet space, use a carbon filter to control smell.

Personal Experience of Pevgrow’s CEO (Alan)

I’ve tested a lot of autoflowers, but Sensi Supreme Jack stands out. I grew it both indoors and outdoors last season, and every single plant was identical—no weaklings, no hermies, just pure vigor. Indoors, I used 20 L pots under LEDs and got 380 g/m². Outdoors, in my garden in northern Spain, I got 310 g per plant despite a rainy August.

The flavor is next-level: fresh pine up front, then a spicy herbal kick. The high is smooth—perfect for daytime use when you want to stay active but relaxed. I wouldn’t recommend aggressive pruning—autos don’t bounce back—but LST works great.

My tip? Start with Plagron Power Roots and finish with SensiZym. It makes a real difference in root health and final yield. This one’s a keeper.