Super Lemon Haze Autoflowering
Cannabis seeds
by Greenhouse Seeds
Super Lemon Haze Autoflowering Cannabis Seeds
Super Lemon Haze Autoflowering is a feminised autoflowering cannabis seed from Greenhouse Seeds that packs award-winning genetics into a compact, fast-finishing plant. Bred by crossing the legendary Super Lemon Haze with ruderalis, this strain keeps the lemony sweetness and clear-headed sativa character of the original while cutting the grow cycle down to just 9 weeks from germination to harvest. If you want a proven genetic lineage without the fuss of photoperiod light schedules, this is where you start.
Choose Your Pack Size
Super Lemon Haze Autoflowering seeds come in three pack sizes. If you're running your first auto grow, the 3-seed pack gives you enough to learn the ropes without committing a full tent. The 5-seed pack is our pick for a single indoor cycle — it gives you a spare if germination doesn't go your way on one. The 10-seed pack makes sense if you're planning successive harvests or want to fill a larger canopy in one go.
| Pack | Seeds | Best For |
|---|---|---|
| 3 seeds | 3 | First-time growers, test runs |
| 5 seeds | 5 | Single indoor cycle with a backup seed |
| 10 seeds | 10 | Multiple cycles, larger setups, stocking up |
Specifications for Super Lemon Haze Autoflowering Seeds
Here are the key growing specs straight from Greenhouse Seeds — the numbers you actually need before committing space and resources to this strain.
| Specification | Detail |
|---|---|
| Seed Bank | Greenhouse Seeds |
| Seed Type | Feminised Autoflowering |
| Genetics | Super Lemon Haze x Ruderalis |
| Genetic Ratio | 50% Sativa / 30% Indica / 20% Ruderalis |
| Total Cycle (Seed to Harvest) | Approximately 9 weeks |
| Height (Outdoor) | 80–100 cm |
| Yield (Outdoor) | 70–80 g per plant |
| Yield (Indoor) | Up to 500 g/m² |
| Difficulty | Beginner-friendly |
| Available Pack Sizes | 3, 5, or 10 seeds |
Complete your setup: pair these seeds with a propagation kit for reliable germination rates, and if you're growing indoors, a Dark Box grow tent and LED panel will give Super Lemon Haze Autoflowering the consistent light it thrives under. A carbon filter is worth grabbing too — the lemon terpenes on this one are loud.
Why Super Lemon Haze Autoflowering Deserves a Spot in Your Grow
The original Super Lemon Haze is a multiple Cannabis Cup winner. That's not marketing fluff — it's a strain that built its reputation on flavour, potency, and a sativa effect profile that people genuinely seek out. The catch? Photoperiod sativas can be demanding. They stretch tall, they need careful light management, and flowering times can drag past 10 weeks before you even start counting from the flip. For growers working with limited vertical space, short summers, or simply less patience, the original can be a headache.
Greenhouse Seeds solved that by crossing Super Lemon Haze with ruderalis genetics. The result keeps 50% sativa and 30% indica in the mix, with 20% ruderalis providing the autoflowering trigger. That means no light schedule changes — the plant moves from vegetative growth to flowering on its own internal clock. You go from germination to harvest in around 9 weeks total. Outdoors, the plant stays between 80 and 100 cm, which makes it manageable on a balcony or in a small garden plot. Indoors, experienced growers have pulled up to 500 g/m², which is genuinely impressive for an auto.
The one honest limitation: autoflowering strains don't respond well to high-stress training techniques like topping or heavy defoliation. If you stress this plant hard during its short vegetative window, it won't have time to recover, and your yield drops. Stick to low-stress training (LST) — gently bending and tying branches to open the canopy. That's the single biggest tip we'd give anyone growing this strain for the first time.
What Super Lemon Haze Autoflowering Smells and Tastes Like
The terpene profile on this strain is the whole reason it won awards. When you crack open a cured bud, you get a sharp, zesty lemon hit first — proper citrus, not artificial. Underneath that there's a sweetness, almost like lemon curd, that rounds out the aroma. When smoked or vaporised, the lemon carries through on the inhale, and the exhale leaves a sweet, slightly tangy aftertaste that lingers. If you've ever had the original Super Lemon Haze, you'll recognise it immediately. The ruderalis addition hasn't dulled the flavour — Greenhouse Seeds kept this one true to its parent.
Compared to something like Lemon Skunk Autoflowering, which leans more earthy and skunky with a lemon undertone, Super Lemon Haze Autoflowering is brighter and sweeter. The sativa dominance shows in the flavour as much as the effect. It's a strain you actually look forward to tasting, not just growing.
How to Grow Super Lemon Haze Autoflowering Seeds
- Germinate your seeds using the paper towel method or directly in a small pot of moist, airy soil. Keep the temperature between 22–25°C. Taproots typically emerge within 24–72 hours.
- Transplant seedlings into their final container as early as possible — autos don't like root disturbance, so going straight into a 10–15 litre pot from the start is the safest approach. Use a light, well-draining soil mix with perlite.
- Provide 18–20 hours of light per day throughout the entire cycle. Autoflowering strains don't need a 12/12 flip, and the extra light hours drive bigger yields. A full-spectrum LED panel works well and keeps heat manageable.
- Water when the top 2–3 cm of soil is dry. Overwatering is the most common mistake with autos — their smaller root systems are more susceptible to waterlogging. Let the pot feel light before you water again.
- Begin low-stress training around week 2–3 by gently bending the main stem and securing it with soft plant ties. This opens up lower bud sites to light without stressing the plant. Avoid topping — the short vegetative phase doesn't leave enough recovery time.
- Switch to bloom nutrients when you see the first pre-flowers, usually around week 3–4. Don't overfeed — autos are smaller plants and burn easily at full-strength doses. Start at half the recommended concentration and increase gradually.
- Flush with plain water for the final 7–10 days before harvest. Trichomes should be mostly milky with a few turning amber. Harvest, dry slowly in a dark room at 18–20°C with 55–60% humidity for 7–10 days, then cure in glass jars for at least 2 weeks.
Super Lemon Haze Auto vs Other Autoflowering Strains
Choosing the right auto depends on your priorities — space, speed, flavour, or yield. Here's how Super Lemon Haze Autoflowering stacks up against two other popular autos from the Greenhouse Seeds and wider catalogue.
| Feature | Super Lemon Haze Auto | White Widow Auto | Big Bang Auto |
|---|---|---|---|
| Genetics | 50% Sativa / 30% Indica / 20% Ruderalis | Indica-dominant Auto | Indica-dominant Auto |
| Seed to Harvest | ~9 weeks | ~8 weeks | ~8 weeks |
| Outdoor Height | 80–100 cm | 60–100 cm | 60–90 cm |
| Indoor Yield | Up to 500 g/m² | Up to 400 g/m² | Up to 450 g/m² |
| Flavour Profile | Sweet lemon, citrus | Earthy, pine, spice | Sweet, fruity, hash |
| Effect Lean | Sativa — cerebral, uplifting | Indica — relaxing, physical | Indica — heavy, sedating |
If you want a clear-headed, daytime-oriented result with standout flavour, Super Lemon Haze Autoflowering is the better pick. If you're after a heavier, more physical result, White Widow Auto or Big Bang Auto will suit you better. We'd pick Super Lemon Haze Auto for flavour and yield combined — the 500 g/m² indoor potential is hard to beat in the auto category.
Frequently Asked Questions
How long does Super Lemon Haze Autoflowering take from seed to harvest?
Around 9 weeks total. That's germination through to chop day. It's one of the faster sativa-leaning autos available, since most sativa autos push 10–12 weeks.
Can I top Super Lemon Haze Autoflowering plants?
We'd advise against it. The vegetative phase is too short for the plant to recover properly. Stick to low-stress training — bending and tying — to open up the canopy without sacrificing growth time.
What yield can I expect from Super Lemon Haze Autoflowering indoors?
Greenhouse Seeds lists up to 500 g/m² under optimal indoor conditions. Realistically, first-time growers should expect less — 300–400 g/m² is solid. Proper lighting, training, and nutrition make the biggest difference.
Is Super Lemon Haze Autoflowering good for beginners?
Yes. It's a resilient plant that doesn't need light schedule changes. The compact size (80–100 cm outdoors) keeps it manageable. Just avoid overwatering and heavy training, and you'll do fine.
What light schedule should I use for Super Lemon Haze Autoflowering?
18 hours on, 6 hours off throughout the entire grow. Some growers run 20/4 for more yield. Unlike photoperiod strains, you never need to switch to 12/12 — the ruderalis genetics handle the flowering trigger automatically.
How tall does Super Lemon Haze Autoflowering grow?
Outdoors, expect 80–100 cm. Indoors it can stay shorter depending on pot size and training. It's compact enough for grow tents as small as 60x60 cm, though an 80x80 gives you more room to work.
Does Super Lemon Haze Autoflowering really taste like lemon?
It does — sharp citrus lemon on the inhale with a sweet, almost curd-like finish. The terpene profile carries over faithfully from the original photoperiod Super Lemon Haze. It's one of the most flavourful autos we've come across.
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.