Runtz Auto by Barneys Farm – 27% THC Autoflowering Feminized Seeds

Runtz Auto by Barneys Farm is a high-THC autoflowering cannabis seed that brings the iconic Runtz experience to growers who want speed, flavor, and power in one compact plant.

Are you still waiting months for average buds?

Most autoflowers sacrifice flavor and potency for speed. You end up with bland, weak harvests that don’t live up to the hype. You invest time, space, and energy only to be underwhelmed by the final result.

What if your grow could deliver top-shelf quality in just 10 weeks?

Imagine harvesting dense, resin-coated buds with a mouthwatering candy-sweet aroma—without the long wait or complex training. No more compromises between speed and quality. No more settling for mediocre yields or forgettable effects.

Runtz Auto delivers the full Runtz legacy—faster than ever

Thanks to its Runtz x BF Super Auto #1 genetics, this feminized autoflower packs 27% THC, a tropical fruit terpene profile, and up to 600g/m² indoors—all in just 63–70 days from seed. Whether you're in a small tent or growing outdoors in the USA, Runtz Auto adapts easily and performs consistently.

Why Runtz Auto outshines your current autoflower

You don’t need a PhD in plant science to see the difference. From day one, Runtz Auto shows vigorous growth, compact structure, and a resilience that makes it ideal for beginners and experts. It thrives in soil, coco, or hydro, responds well to LST, and fills your space with a sweet, gassy aroma that hints at the flavor to come. Unlike finicky photoperiods, it flowers automatically—no light schedule changes needed.

Key features you’ll notice from the first grow

• 27% THC for a powerful, mood-boosting high that starts cerebral and melts into full-body calm
• Sweet, tropical fruit and candy-like flavor that lingers on the palate with every hit
• Compact size: 0.80–1.20 m (2.62–3.94 ft) indoors, perfect for stealth grows and small tents
• Heavy yields: up to 600 g/m² (2 oz/ft²) indoors, 230–300 g (8.11–10.58 oz) per plant outdoors
• Fast turnaround: harvest-ready in just 9–10 weeks, ideal for back-to-back grows
• Resin-rich buds that sparkle under light and deliver a smooth, flavorful smoke
• 70% indica dominance for stress relief and evening relaxation without heavy sedation

Who this strain is perfect for

Whether you're upgrading from a basic autoflower or trying cannabis cultivation for the first time, Runtz Auto fits seamlessly into your routine.

• Growers who want legendary Runtz quality without the long wait
• Beginners looking for a forgiving, high-yielding autoflower
• Urban growers with limited space or need for discretion
• Vapers and concentrate lovers who appreciate rich terpene profiles
• Medical users seeking mood elevation and tension relief (non-prescriptive)

How to grow Runtz Auto like a pro (without the stress)

Start in a 3–5 L pot and transplant once to a final container of 18–27 L to avoid root shock. Use well-draining soil or coco with Barneys Farm’s recommended feeding schedule. Keep light cycles at 18/6 or 20/4 for maximum growth. Apply gentle LST early to open up bud sites, but avoid topping—autoflowers don’t recover well. Monitor humidity (50–60% veg, 40–50% flower) and use a carbon filter if needed. For stronger roots, consider Clonex Rooting Hormone Gel during germination. In late flowering, boost resin with Voodoo Juice for denser, more aromatic buds.

Frequently Asked Questions

Is Runtz Auto indica or sativa?

Runtz Auto is a 70% indica, 30% sativa hybrid, offering a balanced effect that starts uplifting and ends relaxing—perfect for evening use.

How long does it take to grow Runtz Auto?

From seed to harvest, Runtz Auto takes 63–70 days. No light cycle changes are needed—just plant and wait.

What’s the best way to store the seeds?

Keep them in a cool, dark place, ideally in an airtight container in the fridge. Avoid freezing and label with the date.

Can I grow Runtz Auto outdoors in the USA?

Absolutely. It thrives in warm, sunny climates. Plant after the last frost and expect harvest in late summer to early fall.

Does Runtz Auto need special nutrients?

No. It performs well with standard cannabis nutrients. Use a balanced grow formula early and switch to a bloom booster in flowering for best results.

Personal Experience of Pevgrow’s CEO (Alan)

I’ve grown dozens of autoflowers, but Runtz Auto stood out immediately. I used to stick with photoperiods for flavor, but this one changed my mind. I grew it in a 2x2 ft tent with a 250W LED, 18/6 cycle, in FFOF mix. By week 6, the smell was unreal—like fruit candy and diesel. I didn’t top it, just lightly bent the branches. Harvested on day 68. After curing for three weeks, the high was smooth, euphoric, and long-lasting. The buds were dense, frosty, and tasted exactly like the original Runtz. If you want quality without the wait, this is it. I’d recommend it to anyone—from first-timers to connoisseurs.

Technical specifications

• Breeder / Brand: Barneys Farm
• Type: Feminized Autoflowering
• Dominance: 70% Indica, 30% Sativa
• Genetics: Runtz × BF Super Auto #1
• Life cycle: 63–70 days (seed to harvest)
• Indoor yield: 500–600 g/m² (1.76–2.12 oz/ft²)
• Outdoor yield: 230–300 g/plant (8.11–10.58 oz/plant)
• Indoor height: 80–100 cm (31.50–39.37 in)
• Outdoor height: 110–140 cm (3.61–4.59 ft)
• Difficulty: Low
• Structure: Compact, bushy, short internodes
• Climate: Temperate to warm, tolerates mild fluctuations
• Resistance: Moderate resistance to mold and pests
• Training: Suitable for LST, SCROG; avoid topping or FIM
• Recommended pot: 18–27 L final pot
• Light cycle: 18–20 hours of light daily
• Temperature: 22–26 °C (71.6–78.8 °F) veg, 20–25 °C (68–77 °F) flower
• Humidity: 50–60% veg, 40–50% flower
• pH: 6.0–6.5 (soil), 5.8–6.2 (coco/hydro)
• Smell during grow: Medium to high – use carbon filter if needed
• THC: 27%
• CBD: 0.9%
• Aromatic profile: Limonene, myrcene, caryophyllene
• Flavour: Sweet, tropical fruit, candy, gassy undertones
• Effect: Euphoric, relaxing, mood-enhancing – ideal for evening use