Original Auto Jack Herer
Cannabis seeds
by Fast Buds
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Original Auto Jack Herer Cannabis Seeds
Original Auto Jack Herer is an autoflowering feminised cannabis seed from FastBuds that packs the legendary Jack Herer genetics into a compact, fast-finishing plant. She delivers 21% THC, yields up to 500g/m², and wraps up seed-to-harvest in just 9 weeks — making her one of the best autoflowering seeds for growers who want serious potency without a long wait.
Pack Size
Original Auto Jack Herer is available in packs of 3 seeds (SKU: CSFB0046). Each seed is feminised and autoflowering — no need to sex plants or manage light schedules.
| Specification | Detail |
|---|---|
| Seed Bank | FastBuds |
| Genetics | Jack Herer Auto (Sativa-dominant) |
| Type | Autoflowering, Feminised |
| THC Content | 21% |
| Life Cycle | 9 weeks (seed to harvest) |
| Height | 70–90 cm |
| Yield (Indoor) | Up to 500g/m² |
| Growing Difficulty | Beginner-friendly |
| Best Environment | Indoor (SOG) / Outdoor (warm climate preferred) |
| Aroma | Spicy pepper, mango, citrus |
| Flavour | Earthy, sweet, peppery, citrus, floral |
| Resin Production | Very high |
| Seeds per Pack | 3 |
Growing indoors? Pair Original Auto Jack Herer with a complete grow tent kit — she thrives in Sea of Green setups where a proper light and ventilation system make the difference between a good harvest and a great one. If you're planning to make the most of that phenomenal resin production, grab a set of pollen screens or a dry sift kit alongside your seeds.
Why Original Auto Jack Herer Is Worth Growing
The original Jack Herer is a name that needs no introduction — named after the cannabis activist and author of The Emperor Wears No Clothes, it's a strain that's won awards for decades. The catch with the photoperiod version has always been time and space: she can stretch tall and demands a specific light schedule to flower. FastBuds took those legendary genetics and bred them into an autoflowering format that stays between 70 and 90 cm, finishes in 9 weeks flat, and still hits 21% THC. That's genuinely impressive for an auto.
We'd pick this over most autoflowering sativas for one reason: she actually delivers on the yield promise. Up to 500g/m² in good conditions isn't marketing fluff — it's achievable if you give her decent light, proper nutrients, and run a Sea of Green. The squat stature means you can fit more plants per square metre without them fighting for canopy space. And the resin production is properly heavy. If you're into hash making or extracts, this strain is a standout candidate.
The honest limitation? She's sativa-dominant, which means she can be a bit hungrier for nutrients than a stocky indica auto. Overfeeding is the most common mistake we see with this strain — start at 75% of your usual nutrient schedule and work up. She'll tell you if she wants more.
Aroma and Flavour Profile of Original Auto Jack Herer
Original Auto Jack Herer has a complex terpene profile that hits several notes at once. Crack open a cured bud and the first thing you get is spicy, peppery heat — think cracked black pepper, not chilli. Behind that sits a sweet mango fruitiness that rounds into a citrus brightness, almost like zesting a lime. It's the kind of jar you open and immediately want to show someone.
On the smoke, the flavour shifts. You get earthy, sweet notes up front with that peppery edge carrying through on the exhale. There are citrus and floral hints woven in — not perfumey, more like walking past a herb garden after rain. The complexity here is what keeps you coming back. Single-note strains get boring after a week. This one doesn't.
How to Grow Original Auto Jack Herer Seeds
- Germinate your seeds using the paper towel method or directly in a small pot of moist, light soil mix. Taproots typically emerge within 24–72 hours.
- Transplant seedlings into their final container early — autos don't love being repotted, so move them into a 7–11 litre pot as soon as the first true leaves appear. Fabric pots work brilliantly for aeration.
- Run a light schedule of 18/6 or 20/4 throughout the entire grow. Since she's autoflowering, there's no need to switch to 12/12 for flowering.
- Keep temperatures between 20–26°C during the day. Original Auto Jack Herer handles cooler nights better than most sativas, but don't let it drop below 15°C regularly.
- Begin nutrients at around 75% strength during the vegetative stage. Increase gradually once pre-flowers appear, usually around week 3–4.
- For indoor growing, set up a Sea of Green with 4–9 plants per square metre. Her compact 70–90 cm height makes this straightforward. Light penetration stays even across the canopy.
- Outdoor growers in warmer climates can time multiple runs in a single season — with a 9-week life cycle, you can realistically fit 2 harvests between spring and autumn.
- Watch the trichomes closely from week 7 onward. Harvest when most trichomes are milky white with a few turning amber for a balanced effect. Going full amber will push the effect more towards the body.
- Dry in a dark room at 18–21°C with 55–60% humidity for 7–10 days, then cure in glass jars for at least 2 weeks. The terpene profile on this strain really opens up with a proper cure.
Growing Original Auto Jack Herer Indoors vs Outdoors
Indoors, this strain is a Sea of Green specialist. Her compact 70–90 cm frame means you can pack plants tightly without losing airflow, and the uniform height keeps your canopy flat under the light. A 400W or 600W HPS, or a comparable LED panel, will drive her to that 500g/m² ceiling. She responds well to LST (low-stress training) too — gently bending the main stem outward in the first few weeks opens up lower bud sites to light.
Outdoors is where she genuinely shines, though. FastBuds bred her to handle cooler temperatures better than your average sativa, which is a real advantage for European growers who don't live in southern Spain. She'll still do best in warmth and direct sunlight, but a decent British or Dutch summer won't kill her. The 9-week cycle is the real outdoor advantage: start one batch in late April and another in mid-June, and you've got two harvests before October.
| Growing Environment | Key Advantage | Expected Yield |
|---|---|---|
| Indoor (SOG) | Maximum yield per m², controlled conditions | Up to 500g/m² |
| Indoor (single plant) | Simpler setup, less maintenance | 50–100g per plant |
| Outdoor (warm climate) | Multiple harvests per season, natural light | 50–150g per plant |
| Outdoor (cooler climate) | Better cold tolerance than most sativas | 40–100g per plant |
What Makes Original Auto Jack Herer Different from Other Autos
At 21% THC, Original Auto Jack Herer sits in the top tier of autoflowering potency. Most autos hover around 15–18%, so that extra punch is noticeable. But it's not just about the numbers — the balance between indica and sativa effects is what sets her apart. You get the cerebral clarity and uplift from the sativa side, tempered by a physical relaxation from the indica genetics. It's not a one-dimensional experience.
The resin production deserves its own mention. FastBuds specifically highlights this strain for hash making, and after seeing what she produces, we'd agree. The buds come out absolutely caked. If you've been looking for an autoflowering strain to run through bubble bags or a dry sift screen, Original Auto Jack Herer is the best auto for hash production we currently carry.
Compared to something like an Auto Northern Lights — which is a solid, reliable indica auto — Original Auto Jack Herer offers more complexity in both flavour and effect. Northern Lights is your dependable workhorse; Jack Herer is the one you grow when you want something with character. Both finish in a similar timeframe, but Jack Herer's terpene profile and resin output put her a step above for anyone who cares about quality over pure simplicity.
Frequently Asked Questions
How long does Original Auto Jack Herer take from seed to harvest?
Nine weeks. That's the full life cycle — germination through to chop day. Some phenotypes may run a few days longer, but 9 weeks is the standard with this FastBuds strain.
Is Original Auto Jack Herer good for beginners?
Yes. Her compact 70–90 cm size, autoflowering nature, and short life cycle make her forgiving for first-time growers. Just watch your nutrient levels — start at 75% strength and increase gradually.
Can I grow Original Auto Jack Herer outdoors in a cooler climate?
You can. Unlike many sativa-dominant strains, she handles cooler temperatures reasonably well. Best results come from warmer conditions, but a decent European summer will still produce solid harvests.
What yield can I expect from Original Auto Jack Herer?
Up to 500g/m² indoors under good conditions, particularly in a Sea of Green setup. Individual outdoor plants typically produce 50–150g depending on climate and care.
Is Original Auto Jack Herer suitable for making hash?
Absolutely — she's one of the best autos for it. FastBuds specifically notes her phenomenal resin production. The trichome coverage on mature buds is heavy enough to make dry sifting or bubble hash extraction very worthwhile.
How tall does Original Auto Jack Herer grow?
Between 70 and 90 cm. That's compact for a sativa-dominant strain, which is exactly why she works so well in indoor setups and Sea of Green configurations where vertical space is limited.
Can I get multiple outdoor harvests per season with this strain?
Yes. With a 9-week seed-to-harvest cycle, you can time two or even three runs in a single outdoor season if you're in a warm enough climate. Stagger your starts by 4–5 weeks for a continuous supply.
Last updated: April 2026
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Medical disclaimer. This content is for informational purposes only and does not constitute medical advice. Consult a qualified healthcare provider before use of any substance.