Purple Punch OG XL Auto® by Sweet Seeds – High-Yielding, Aromatic Autoflower with Purple Hues

Purple Punch OG XL Auto® by Sweet Seeds is a powerful, fast-finishing autoflower that produces aromatic, resin-drenched buds in just 8 weeks from seed, delivering a sweet, spicy flavor and deeply relaxing effects.

Still stuck with slow, low-yielding autos that barely smell like anything? You’re not growing wrong — you’re just growing outdated genetics.

Most autoflowers fizzle out before they develop real flavor, leaving you with bland buds and wasted time. They stretch too much, yield little, and barely hint at that legendary OG punch. You end up with harvests that look okay but taste like air — and barely kick in.

Meet Purple Punch OG XL Auto® — the 5th-gen upgrade that finally brings connoisseur-level quality to the autoflower world. Bred from elite Purple Punch OG® and Killer Kush Auto®, this strain doesn’t just grow fast — it grows right. Juicy buds, rich terpenes, and that unmistakable OG spice, all in a compact, beginner-friendly package.

Why This Auto Delivers What Old-School Strains Can’t

Forget the autos that barely make a dent in your stash jar. Purple Punch OG XL Auto® is built for flavor, resin, and real results. It doesn’t just finish fast — it finishes full. With a terpene profile that sings and yields that stack up, it turns your grow from a side project into a serious supply line.

From the first whiff to the final cure, this strain feels like a win. It grows steady, resists stress, and rewards you with thick, purple-kissed colas that glisten with resin. Whether you’re chasing flavor, potency, or just a reliable harvest, this one checks every box — without the fuss.

Key Features You’ll Notice from the First Grow

• High terpene content for intense, sweet-spicy OG aroma and flavor — perfect for extracts.
• Compact yet sturdy structure (60–120 cm / 2.0–3.9 ft) — ideal for stealth grows and small spaces.
• Fast 8-week cycle from seed to harvest — no waiting, no guesswork.
• Produces 400–500 g/m² indoors or 60–180 g/plant outdoors — serious yield for an auto.
• Purple and reddish hues in leaves and buds — thanks to Grand Daddy Purple genetics.
• THC levels of 18–22% — strong, relaxing effects without overwhelming sedation.
• Easy to grow with low to medium difficulty — forgiving for beginners, reliable for experts.

Who This Strain Is Perfect For

Whether you’re upgrading your setup or starting fresh, Purple Punch OG XL Auto® fits like the missing piece.

• Growers who want fast, high-quality harvests without photoperiod hassle.
• Extract lovers looking for high-terpene material that’s easy to grow.
• Beginners seeking a forgiving, high-yielding auto that actually tastes good.
• Urban growers needing discreet, compact plants with big flavor.
• Evening users chasing a calm, relaxing experience with a sweet, spicy finish.

How to Grow Purple Punch OG XL Auto® for Best Results

Get the most out of your Purple Punch OG XL Auto® with this simple, proven grow guide — tailored to its genetics and cycle.

Quick Overview

Autoflowering · Sweet Seeds · 8-week harvest · Low to medium difficulty · Ideal for indoor tents or outdoor patios.

Safe Start

Begin strong with healthy roots and early vigor.

• Germinate seeds at 22–25 °C with high humidity (60–70%).
• Use a light, airy soil mix to prevent overwatering.
• Transplant once the radicle is ~1 cm long.
• Boost early root development with Clonex Rooting Hormone Gel.

Stable Seedling

Set the foundation for strong, resilient growth.

• Keep lights 30–50 cm (11.81–19.69 in) above canopy.
• Water lightly — let topsoil dry between waterings.
• Introduce mild nutrients after first true leaves appear.
• Enhance root resilience with Cancerbero Mycorrhizae.

Directed Growth

Guide structure and maximize yield potential.

• Provide 18–20 hours of light daily — no photoperiod switch needed.
• Use a final pot size of 18–27 L (5–7 gal) for optimal root space.
• Apply gentle LST to spread canopy and improve light penetration.
• Feed with balanced nutrients — avoid heavy nitrogen in late veg.
• Support branches early with soft ties if needed.

Efficient Flowering

Lock in resin, flavor, and dense bud development.

• Maintain humidity at 40–50% to prevent mold.
• Ensure steady airflow with inline and oscillating fans.
• Boost bud density with Brutal Bloom Flowering Booster.
• Monitor trichomes — harvest when milky with slight amber for balanced effects.
• Flush 7–10 days before harvest for smoother smoke.

Frequently Asked Questions

How long does Purple Punch OG XL Auto® take to harvest?

It’s ready to harvest in just 8 weeks from germination — one of the fastest high-yielding autos available.

Does it really turn purple?

Yes — thanks to its Grand Daddy Purple lineage, cooler nighttime temps (18–20 °C) during flowering enhance purple and reddish hues in buds and leaves.

Is it suitable for beginners?

Absolutely. It’s forgiving, resistant to stress, and doesn’t require advanced techniques — just consistent care and light.

Can I grow it outdoors in a rainy climate?

It has moderate resistance to moisture, but in humid or rainy areas, ensure excellent airflow and consider a greenhouse for protection.

What’s the best way to use the harvest?

Its high terpene content makes it ideal for concentrates, but it also rolls beautifully and delivers a smooth, flavorful smoke.

Personal Experience of Pevgrow’s CEO (Alan)

I’ve grown a lot of autos — some underwhelming, some impressive. But Purple Punch OG XL Auto®? That one stood out. I ran it alongside a few photoperiods in my 1.20 m x 1.20 m (3.94 ft x 3.94 ft) tent with a 600W LED. Planted three in 20L pots using Light Mix soil. No topping, just light LST to open the canopy.

What surprised me was how fast it packed on weight. By week 6, the trichomes were already thick, and the smell — sweet berries with that sharp OG kick — filled the room. I harvested at week 8. One plant gave me 520 g/m², slightly above average, but the quality was undeniable. The buds were rock-hard, coated in resin, and turned a deep violet on the tips.

I’ve smoked better strains, sure — but never one this fast. For a beginner or someone wanting reliable, flavorful stash without the wait, this is a no-brainer. I’d grow it again just for the ease and consistency. Pair it with Carboload in late flower, and you’ll see even denser buds.