Auto Jack Herer Advanced Seeds – High-THC Autoflowering Sativa Hybrid, 350–400 g/m² Yield

Auto Jack Herer by Advanced Seeds is a high-THC, sativa-dominant autoflower that delivers a clear, euphoric high and impressive yields of 350–400 g/m² in just 10 weeks from seed to harvest.

Worried your auto won’t hit hard enough?

Let’s be real: most autoflowering strains promise big but end up delivering a weak, sleepy buzz that barely lifts your mood. You want something that actually does something — not just fills the room with smell and fluff.

What if you’re stuck with a lazy, flavorless plant?

Imagine waiting 10 weeks only to find out your buds smell like hay, taste like paper, and leave you couch-locked instead of inspired. That’s the risk with unstable autos — wasted time, wasted space, wasted money. You don’t want a plant that grows fast just to disappoint.

Auto Jack Herer hits different — and grows smarter

This isn’t your average auto. Born from the legendary Jack Herer and Lowryder, it packs 15–20% THC, a complex spicy-woody aroma, and a soaring sativa high that’s energizing, not anxious. It finishes in 10 weeks, hits hard, and covers itself in trichomes — no compromises.

Why Auto Jack Herer actually delivers what sativa lovers want

It’s the rare auto that keeps the soul of its photoperiod parent. You get the speed and simplicity of an autoflower with the cerebral punch and aromatic depth of a Cup-winning sativa. Whether you’re short on time or space, this strain doesn’t make you choose between quality and convenience.

Key features and benefits

• From seed to harvest in just 10 weeks — perfect for fast rotations and discreet grows.
• Yields up to 400 g/m² (1.41 oz/ft²) indoors — massive output for an auto.
• Reaches 0.75–1.00 m (2.46–3.28 ft) — compact enough for small spaces, tall enough to produce.
• Packs 15–20% THC — delivers a strong, clear-headed, euphoric high.
• Develops dense, resin-coated buds — ideal for extracts or premium flower.
• Thrives in soil or coco — adapts easily to your setup.
• Resistant to mold and stress — great for beginners and outdoor growers.

Common doubts — and why they don’t apply here

You might think this is just another overhyped auto. Think again.

• You think that autos lack flavor. In reality, Auto Jack Herer bursts with spicy, woody notes and a clean finish — a true Jack Herer experience.
• You think that sativa autos stretch too much. In reality, it stays under 1 meter (3.28 ft) and responds well to LST for maximum light exposure.
• You think that high-THC means anxiety. In reality, the high is uplifting and focused — not jittery or overwhelming.

How to grow Auto Jack Herer for best results

Simple, stable, and forgiving — this auto thrives with minimal intervention. Just give it good light, proper airflow, and a final pot of 18–27 L (5–7 gal) from the start.

1. Germinate seeds in a moist paper towel or starter cube at 22–25 °C (71.6–77 °F).
2. Transplant carefully when the taproot is 1–2 cm (0.39–0.79 in) long.
3. Use a well-draining soil or coco mix — add perlite for aeration.
4. Keep lights on 18–20 hours daily — no light cycle changes needed.
5. Water when the top inch of soil feels dry — avoid overwatering.
6. Support branches late in flowering if needed — the buds get heavy.
7. Harvest when trichomes turn milky to amber — around 10 weeks.

Technical specifications

• Breeder / Brand: Advanced Seeds
• Type: Autoflowering
• Dominance: Sativa-dominant hybrid (Ruderalis x Sativa x Indica)
• Genetics: Jack Herer × Lowryder
• Flowering time: 10 weeks from seed
• Yield (indoor): 350–400 g/m² (1.23–1.41 oz/ft²)
• Height (indoor): 0.75–1.00 m (2.46–3.28 ft)
• Difficulty: Low
• Structure: Medium internodal spacing, strong branching
• Ideal climate: Temperate to Mediterranean
• Resistance: Moderate resistance to mold and pests
• Training: Suitable for LST; avoid topping or FIM
• Recommended pot: 18–27 L (5–7 gal) final pot
• Light: 18–20 h daily
• Temperature: 22–26 °C (71.6–78.8 °F) veg, 20–25 °C (68–77 °F) flower
• Humidity: 60–70% seedling, 50–60% veg, 40–50% flower
• pH: 6.0–6.5 (soil), 5.8–6.2 (coco/hydro)
• THC: 15–20%
• CBD: Low (approx.)
• Aromatic profile: Spicy, woody, earthy (dominant terpenes: myrcene, pinene, caryophyllene)
• Flavour: Complex blend of spices, wood, and subtle citrus
• Effect: Cerebral, uplifting, energizing — ideal for daytime use

Frequently Asked Questions

Is Auto Jack Herer good for beginners?

Absolutely. It’s low-maintenance, resistant to stress, and doesn’t require complex training. Just keep it watered and lit — it’ll do the rest.

Can I grow this outdoors?

Yes. It thrives in warm, sunny climates and finishes by late summer. Just protect it from heavy rain to avoid mold.

Does it smell strong during flowering?

Yes, it has a medium to high odor. Use a carbon filter like the Abbaton if you’re growing indoors or need discretion.

How many seeds should I start with?

One plant per pot. Since they’re feminized and stable, you can count on nearly 100% success — no guesswork.

Can I use regular fertilizers?

Yes, but go easy. Autos don’t need as much food. Start with half doses and increase slowly. A balanced Weed fertilizer kit Tripack Flora GHE works perfectly.

Personal Experience of Pevgrow’s CEO (Alan)

I was skeptical at first — another “Jack Herer auto”? Come on. But after growing it side-by-side with the original photoperiod version, I was shocked. The high is almost identical: clear, creative, and motivating. The plant stayed under a meter, finished in 10 weeks, and coated itself in crystals. I didn’t top it — no need. I used a simple soil mix with some perlite and fed it lightly with the Flora series. The smell when I opened the jar? Spicy, sharp, unmistakably Jack. If you want a fast, potent sativa that doesn’t cut corners, this is it. My only tip: don’t overwater. These hate wet feet. Let the soil dry between waterings, and you’ll be golden.