Purple Punch Automatic by Royal Queen Seeds – Sweet Fruity Autoflower with 19% THC · Fast 10-Week Grow

Purple Punch Automatic by Royal Queen Seeds is a fast, flavorful autoflower that brings the legendary dessert taste of Purple Punch into an easy 10-week grow cycle, delivering relaxing effects and eye-catching purple buds with minimal effort.

Are You Still Waiting Months for a Harvest?

Most photoperiod strains keep you locked in a 3–4 month cycle, demanding light schedule changes, precise timing, and constant monitoring. That’s time, energy, and space you could be using for more frequent harvests and fresher buds. If you're tired of the long wait and complex routines, you're missing out on the simplicity modern growing offers.

What If You Could Harvest in Just 10 Weeks?

Imagine going from seed to stash in less than three months—no light switches, no stress about photoperiods, just plant and progress. With inconsistent or underwhelming yields from older autos, it’s easy to doubt their potential. But what if an autoflower could match photoperiod quality, potency, and flavor?

Purple Punch Automatic: Fast, Flavorful & Full-Powered

Meet Purple Punch Automatic—a 75% indica-dominant autoflower that delivers on all fronts. With up to 19% THC, dense rock-hard buds, and a mouthwatering blend of sweet berries and grapes, it’s built for flavor lovers and chill-seekers alike. Thanks to its Old Skunk Auto heritage, it’s tough, compact (0.80–1.20 m / 2.62–3.94 ft), and ready to harvest in just 9–11 weeks from germination. Whether you're growing in a closet or on a balcony, this strain fits perfectly and rewards generously—up to 400 g/m² (14 oz/ft²) indoors or 150 g (5.29 oz) per plant outdoors.

Before Growing Purple Punch Automatic

Setting up for success starts with the right foundation. This autoflower thrives in a stable environment with consistent light and well-aerated soil. Because it doesn’t forgive mistakes like nutrient burn or overwatering, starting clean and simple is key.

• Use a final pot of 18–27 L (6.76–10.20 gal) from the start
• Choose light, airy soil or coco with good drainage
• Keep pH at 6.0–6.5 (soil) or 5.8–6.2 (coco)
• Set lights to 18–20 hours daily—no changes needed
• Start with low EC and increase gradually

During Growth: Fast, Stable & Low Maintenance

Purple Punch Automatic grows with steady vigor, showing strong lateral branching and a bushy structure perfect for LST. It doesn’t stretch excessively, making it ideal for confined spaces. The real magic starts in week 4, when the terpene profile kicks in—your grow space will fill with a sweet, candy-like aroma that’s strong but manageable with a carbon filter. By week 6, pre-flowers appear, and flowering begins in earnest. Avoid topping or aggressive pruning—this auto rewards gentle training and consistency. For stronger roots from the start, RootFast by Atami boosts early development and resilience.

After Harvest: Big Yields, Big Flavor

By week 10, you’ll be trimming dense, trichome-covered buds in vibrant shades of purple and green. Drying takes 7–10 days at 18–21 °C (64–70 °F) and 50–60% RH, followed by a 3–4 week cure to enhance flavor. The result? Smooth, resinous smoke with a sweet, fruity punch and a deeply relaxing body high—perfect for unwinding at night. For a cleaner finish and improved resin production, Final Part supports late-stage maturation and trichome development.

Short- and Long-Term Advantages and Benefits

• Harvest in just 9–11 weeks—no light cycle changes
• Sweet, candy-like flavor with notes of grape and berry
• Up to 19% THC for a strong, relaxing body high
• Compact size fits discreet indoor or balcony grows
• Resilient to stress and common growing mistakes
• Consistent yields, even for beginner growers
• Minimal training needed—great for SCROG or SOG
• Builds confidence for future, more complex grows

Technical specifications

• Breeder / Brand: Royal Queen Seeds
• Type: Autoflowering
• Dominance: 75% Indica, 20% Sativa, 5% Ruderalis
• Genetics: Purple Punch × Old Skunk Auto
• Flowering time: 50–55 days (7–8 weeks)
• Total cycle: 9–11 weeks from seed to harvest
• Indoor yield: 350–400 g/m² (12–14 oz/ft²)
• Outdoor yield: 100–150 g/plant (3.53–5.29 oz/plant)
• Indoor height: 80–100 cm (31.50–39.37 in)
• Outdoor height: 80–120 cm (31.50–47.24 in)
• THC: Up to 19%
• CBD: Medium
• Difficulty: Low
• Structure: Bushy, compact, dense branching
• Resistance: High resistance to mold and pests
• Training: Suitable for LST, SCROG; avoid topping
• Smell in grow: High – use carbon filter recommended
• Flavor: Sweet, fruity, candy, grape, berry
• Effect: Physically relaxing, calming, ideal for nighttime

Frequently Asked Questions

How long does Purple Punch Automatic take to harvest?

From seed to harvest, it takes 9–11 weeks. Flowering lasts 7–8 weeks, with harvest possible as early as week 9 depending on conditions.

Is Purple Punch Auto good for beginners?

Yes. It’s low-maintenance, forgiving of minor errors, and doesn’t require advanced techniques—perfect for first-time growers.

Does it really turn purple?

Yes, especially under cooler nighttime temperatures. The cooler the nights during flowering, the more vibrant the purple hues become.

Can I grow it outdoors in a cold climate?

Yes. Thanks to its ruderalis and Old Skunk genetics, it tolerates cooler temperatures and shorter summers, making it suitable for temperate and continental climates.

How many plants per m² should I grow?

For SOG: 16 plants in 11 L pots. For SCROG: 4–6 plants in 18–27 L pots. Adjust based on available space and training method.

Personal Experience of Pevgrow’s CEO (Alan)

I grew Purple Punch Automatic in my 1.20×1.20 m (4×4 ft) tent with a 600W LED and a carbon filter—no smell issues. I used 20 L pots with living soil and started with Pro Roots to supercharge early root development. No topping, just light LST in week 3. By week 5, the smell was unreal—like grape candy in a grow room. I flushed for 7 days and harvested at 10 weeks. After curing for 4 weeks, the flavor exploded: sweet, smooth, and deeply relaxing. I got 380 g/m²—solid for an auto. If you want flavor, ease, and consistency, this one’s a no-brainer.