Skywalker OG Runtz XL Auto® by Sweet Seeds – 7th Gen Autoflower with OG Kush Power & Runtz Sweetness

Skywalker OG Runtz XL Auto® by Sweet Seeds is a powerhouse 7th generation autoflower that delivers top-shelf resin, flavor, and yield in just 8 weeks — no timing the light cycle, no stress, just pure performance.

Overwhelmed by complicated grows and underwhelming results?

Let’s be real: not everyone has the time or patience to babysit photoperiod plants for months, tweaking lights and nutrients just to end up with mediocre buds. And when you’re dealing with autoflowers, the fear of stunted plants or weak yields is real — especially if you don’t know the right rhythm.

That hesitation? It leads to half-hearted grows, wasted time, and the frustrating feeling that your setup just isn’t working. But what if the problem wasn’t your skills — it was your strain?

Skywalker OG Runtz XL Auto® flips the script. This isn’t just another fast-flowering compromise — it’s a precision-engineered hybrid built for growers who want big results without the hassle. With a solid 8-week turnaround and forgiving genetics, it’s designed to thrive even if you’re not perfect. Just plant, feed, and watch it explode into dense, trichome-coated colas.

Technical specifications

• Breeder / Brand: Sweet Seeds
• Type: Autoflowering
• Dominance: 63.5% Indica / 36.3% Sativa / 0.2% Ruderalis
• Genetics: Skywalker OG (OG Kush x Skywalker) × Runtz XL Auto® (Runtz x Sweet Gelato Auto®)
• Cycle: 8 weeks from germination (indoor/outdoor)
• Indoor Yield: 450–600 g/m² (15.87–21.16 oz/ft²)
• Outdoor Yield: 65–200 g/plant (2.29–7.05 oz/plant)
• Height: 0.60–1.20 m (1.97–3.94 ft)
• Difficulty: Low to medium
• Structure and vigour: Compact, bushy, excellent branching, moderate stretch
• Climate: Temperate, Mediterranean, continental; good heat tolerance
• Resistance: Moderate resistance to mold and pests
• Training: Suitable for LST; avoid topping or FIM
• Pot size: 18–27 L recommended for autos
• Light: 18–20 h 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
• THC: 18–21%
• CBD: 0.2%
• Aromatic profile: Limonene, myrcene, caryophyllene
• Flavour: Sweet, fruity, earthy, spicy, cypress
• Effect: Balanced — creative, stimulating, and relaxing; ideal for evening use

Grow guide: How to get the most from Skywalker OG Runtz XL Auto®

Quick overview: Autoflowering · Sweet Seeds · 8-week cycle · low to medium difficulty · perfect for indoor tents or stealthy outdoor grows.

Safe start: Germinate in a moist paper towel or starter cube at 22–25 °C. Transplant gently once the taproot is 1–2 cm long. For a faster start, Alga C boosts root development and reduces shock.

Stable seedling: Use a well-aerated soil mix with moderate nutrients. Water lightly and maintain high humidity (60–70%). Keep lights at a safe distance to avoid stress.

Directed growth: Provide 18–20 hours of light daily. Use a final pot of 18–27 L to avoid transplanting. Apply Soil Grow to support strong, balanced growth without overfeeding.

Efficient flowering: Lower humidity to 40–50% and ensure strong airflow. Support heavy colas with stakes if needed. At peak flowering, Top Bloom enhances resin production and bud density.

Harvest and refinement: Harvest when trichomes turn milky to amber. Flush 7–10 days before harvest. Dry at 18–22 °C and 50–60% RH, then cure for 2–4 weeks to maximize flavor and smoothness.

Why this strain outperforms the average autoflower

• Massive yields in record time — no waiting months
• Resilient genetics forgive minor mistakes
• Explosive terpene profile with sweet, gassy depth
• Perfect for extracts — trichomes cover every surface
• Compact size fits small spaces without sacrificing output
• Consistent performance across indoor and outdoor setups
• Smooth, balanced high — creative but calming

Frequently Asked Questions

How long does Skywalker OG Runtz XL Auto® take to harvest?

From seed to harvest, it takes approximately 8 weeks. No need to change light cycles — it flowers automatically.

Is this strain good for beginners?

Absolutely. Its forgiving nature, resistance to stress, and fast cycle make it ideal for first-time growers.

Does it smell strong during flowering?

Yes, it has a powerful aroma. Use a carbon filter like those in premium grow tents to control odor.

Can I grow it outdoors in a cold climate?

It handles temperate climates well, but avoid extreme cold. Best grown in spring or early summer for optimal results.

What’s the best way to maximize yield?

Use a final pot of at least 18 L, avoid pruning, and feed consistently. LST (Low Stress Training) helps open up the canopy for better light penetration.

Personal Experience of Pevgrow’s CEO (Alan)

I grew Skywalker OG Runtz XL Auto® in my 60x60x120 cm tent with a 400W HPS. Four plants in 18L pots, full soil mix — no hydro, no fuss. What blew me away was the speed: by week 5, the smell was already knocking me out — sweet diesel with a syrupy twist. At week 8, I harvested 58 grams per plant dry. The buds were rock-hard, dripping in resin. I pressed some into rosin — golden, flavorful, and smooth. No stretch drama, no nutrient burns. I’ve tried fancier strains, but this one? It just works. My only tip: don’t overthink it. Plant, feed lightly, and let the genetics do the talking.