AK 420 Auto by Seed Stockers – Sativa-Dominant Autoflower with Huge Yields & Citrus-Pine Flavor

AK 420 Auto by Seed Stockers is a high-yielding, sativa-dominant autoflowering strain that delivers potent, euphoric effects and a refreshing citrus-pine flavor in just 11 weeks from seed to harvest.

Are you struggling to grow a powerful sativa that actually finishes on time?

Most sativas take forever, need perfect conditions, and collapse under their own stretch. You end up with weak yields, mold issues, or buds that never fully ripen—especially if you're short on space or light control.

What if your plant could handle heat, cold, and beginner mistakes—without sacrificing potency?

Waiting 3–4 months for a finicky photoperiod strain? Dealing with nutrient burn or mold because your plant can’t handle stress? If you’re growing outdoors or in a less-than-ideal setup, traditional sativas can be a gamble. And if you're new to growing, the learning curve feels steep.

Meet AK 420 Auto: the no-stress sativa that grows like an indica and hits like a legend.

AK 420 Auto combines the legendary power of AK47 with rock-solid autoflower resilience. It thrives in hot or cold climates, resists mold and pests, and delivers dense, trichome-covered buds in just 11 weeks—no light cycle changes needed. Whether you're on a balcony, in a greenhouse, or a small indoor tent, this strain adapts and overperforms.

Enjoy a creative, long-lasting high without the anxiety

Feel the rush of euphoria and mental clarity that fuels your day. AK 420 Auto’s balanced sativa effect lifts your mood, boosts focus, and sparks creativity—perfect for artists, writers, or anyone tackling a long to-do list. It’s strong, but not overwhelming, with a smooth cerebral kick and a relaxing body touch that keeps you grounded.

How to grow AK 420 Auto for maximum yield and flavor

AK 420 Auto is beginner-friendly but rewards experience. It grows tall and bushy, so give it space and support in the final stretch. Start with a solid foundation and let this resilient plant do the rest.

1. Start with a 18–20 hour light cycle indoors or plant outdoors from March to October in warm climates.
2. Use a final pot of 18–27 L (5–7 gal) to allow full root development—avoid transplanting.
3. Keep nutrients low, especially in early stages; this strain prefers a light hand and thrives in organic mediums.
4. Support heavy side branches with stakes or a trellis net during flowering to prevent breakage.
5. Harvest after 11 weeks when trichomes turn milky to amber for peak potency and flavor.

Why AK 420 Auto delivers more bud, less hassle

• Because it’s a stabilized autoflower, you get 100% feminized plants that flower automatically—no guesswork or light timers needed.
• Thanks to its AK47 BCN lineage, it packs up to 22% THC and a complex terpene profile—expect waves of euphoria and creative energy.
• With a huge yield potential of up to 550 g/m² (1.2 oz/ft²), it’s one of the most productive sativa-dominant autos on the market.
• Its resistance to mold, pests, and temperature swings makes it ideal for outdoor grows in Mediterranean or challenging climates.
• Featuring high levels of limonene and caryophyllene, the aroma is sharp citrus-pine when fresh, turning fruity and spicy when cured—perfect for extracts.
• At 1.20–1.50 m (3.94–4.92 ft) tall, it’s manageable indoors with LST or SCROG, and thrives in a Sea of Green setup.
• With no need for repotting and low nutrient demands, it’s a low-maintenance grow that’s perfect for beginners.

Care and maintenance for long-term success

Keep your AK 420 Auto healthy with consistent watering and good airflow. Avoid overwatering—let the soil dry between sessions to encourage strong roots. Flush with plain water 7–10 days before harvest to improve taste and smoothness. For best results, cure buds for 2–4 weeks in glass jars at 18–22 °C (64–72 °F) and 55–60% humidity.

• Use a well-aerated soil mix with perlite to prevent compaction and root rot.
• Monitor pH: keep it between 6.0–6.5 in soil or 5.8–6.2 in coco.
• Install a carbon filter if growing indoors—while not overly stinky, the citrus-diesel aroma can be noticeable in late flowering.
• Prune lightly if needed, but avoid aggressive topping—autoflowers don’t recover well from stress.
• After harvest, store seeds in a cool, dark place to maintain viability for future grows.

Frequently Asked Questions

How long does AK 420 Auto take from seed to harvest?

AK 420 Auto completes its life cycle in approximately 11 weeks, making it ideal for fast, continuous harvests all year round.

Is AK 420 Auto good for beginners?

Yes, it’s highly recommended for beginners thanks to its resilience, low nutrient needs, and resistance to common growing issues like mold and pests.

Can I grow AK 420 Auto outdoors in colder climates?

Absolutely. This strain handles cold nights and temperature fluctuations well, making it suitable for outdoor grows in Northern Europe from May to September.

What’s the best way to maximize yield?

Use a large pot (18–27 L), provide strong light (600W HPS or equivalent), and support the plant with a trellis. Avoid overfeeding—this strain prefers a light nutrient touch.

Is AK 420 Auto suitable for making extracts?

Yes, its high trichome production and rich terpene profile make it excellent for hash, rosin, and BHO—save your trim!

Personal Experience of Pevgrow’s CEO (Alan)

I grew AK 420 Auto on my sunny terrace in Barcelona alongside a few photoperiods, just to compare. What shocked me was how little attention it needed—no light changes, no stress from late-season rain, and zero mold issues. I used Advanced Seeds soil and a simple organic feed. By week 11, I had dense, frosty colas that smelled like lemon cleaner and diesel. The high was clean, uplifting, and lasted for hours—perfect for evening hangs without couch-lock. My only tip? Give it space and support early. One plant hit 1.45 m and needed staking, but the yield was worth it. I’ll definitely grow it again, especially for outdoor summer cycles.