How to Grow Auto Haze: A Fast Sativa Autoflower
Auto Haze is a fast, easy autoflowering version of the classic Haze, bringing that energetic, uplifting sativa character without the long wait. This 80% sativa pairs a high 18-24% THC with an earthy, herbal flavor and an energetic, euphoric, happy effect, finishing a whole crop in about 8-10 weeks from seed.
Classic Haze is famous for its soaring cerebral high but notorious for its very long flowering. By crossing it with a ruderalis line, Auto Haze keeps the bright, spicy-herbal Haze character and the uplifting effect, but delivers it in a quick, autoflowering package that needs no light-schedule changes.
Recommended Strains
Haze Autoflower
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THC | 18% - 24% (High) |
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Type | Autoflowering |
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Yield | High |
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Phenotype | 20% Indica / 80% Sativa |
Haze XL Auto
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THC | 21% (Medium) |
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Type | Autoflowering |
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Yield | High |
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Phenotype | 30% Indica / 70% Sativa |
Potent, lively and quick, it is a beginner-friendly way to grow a true Haze. You can see the full genetics and buy Auto Haze seeds on the strain page, and browse more of our autoflowering seeds alongside it.
Strain Profile at a Glance
| THC | High (18-24%) |
|---|---|
| Lineage | Haze x Ruderalis |
| Type | Autoflowering (feminized) |
| Genetics | 20% Indica / 80% Sativa |
| Climate | Dry |
| Life cycle | 8-10 weeks (seed to harvest) |
| Harvest | All season (multiple runs) |
| Height | 4.92 ft / 1.5 m |
| Yield indoor | 1.15-1.64 oz/ft² (350-500 g/m²) |
| Yield outdoor | 19.4-21.16 oz/plant (550-600 g/plant) |
| Grow difficulty | Beginner-friendly |
| Flavors | Earthy, Herbal |
| Effects | Energetic, Euphoric, Happy |
Promos & Deals
Growing an Autoflower
An autoflower does not need a change in light schedule to bloom. Instead of switching to 12/12 like a photoperiod plant, Auto Haze starts flowering on its own after a few weeks, purely on age, and runs its whole life cycle in about 8-10 weeks from seed to harvest. You can keep it under a long day of around 18-20 hours of light from start to finish.
Because the clock is always ticking, the golden rule is to avoid any check to its growth. Start the seed in its final pot rather than transplanting, since transplant shock costs an auto days it cannot make up. Keep any training gentle, low-stress tucking rather than heavy topping, and feed lightly. Being feminized, every seed grows into a flowering female, so there is no need to sex the plants.
Climate and Where to Grow It
Auto Haze does best in a dry climate with plenty of light and good airflow. A drier environment suits its Haze heritage and helps keep the airy, resinous buds clean, so in more humid regions a well-ventilated, dehumidified indoor tent is the safer bet. As an 80% sativa it has a taller, branchy structure, reaching around 1.5 m, so give it a little room to stretch.
Its biggest advantage outdoors is flexibility: because it flowers on age rather than daylight, you are not tied to one planting window and can run more than one crop across a warm, dry season. Indoors, aim for daytime temperatures around 68-80°F (20-27°C) with nights a little cooler, and keep airflow steady over and under the canopy.
Keep humidity low to protect the buds: around 55-60% early on, nearer 40% in flower, and down to about 30% by harvest. Good airflow matters on a tall, leafy sativa, so keep it well spaced and defoliate sensibly so light reaches the lower bud sites.
Feeding Schedule (EC Guide)
Autoflowers want a lighter touch than photoperiod plants. Feed gently, follow the plant’s lead, and taper off for the final flush so the earthy, herbal flavor comes through clean and the smoke finishes smooth. The ranges below are a guide; with an auto, err on the low side.
| Stage | EC (mS/cm) | Notes |
|---|---|---|
| Seedling | 0.4-0.6 | Very light feed, start in the final pot |
| Vegetative growth | 0.8-1.2 | Short veg, raise nitrogen gently |
| Early flower | 1.2-1.4 | Shift toward bloom nutrients (P and K) |
| Full flower | 1.4-1.6 | Peak bloom feed while the buds swell |
| Flush | 0.0-0.4 | Plain water for the final 1-2 weeks |
Flowering and Harvest
Auto Haze starts flowering on its own a few weeks in and finishes its whole cycle in 8-10 weeks from seed, which is remarkably fast for a Haze, a type that normally takes months to flower as a photoperiod plant. It fills in airy, resinous, spicy-herbal sativa buds over that short window, with no flip to manage, so you keep the light steady and let it run.
Yields are strong for an auto: around 350-500 g/m² indoors and 550-600 g per plant outdoors in a good, dry season, depending on light, pot size and canopy health. Give it a well-sized pot from the start so the roots never stall, keep the canopy open, and harvest when most trichomes have turned cloudy for the fullest expression.
Drying and Curing
Dry whole plants or branches in a dark room at around 60°F (15-18°C) and 55-60% humidity for 7-14 days, until the thin stems snap rather than bend. A slow, even dry keeps the airy sativa buds from drying out too fast on the outside, which protects both the spicy-herbal aroma and the trichome coat.
Then cure the trimmed buds in sealed jars, burping them daily for the first week and letting them settle for three to four weeks. A proper cure is what brings the earthy, herbal notes forward and smooths out this classic Haze smoke, which is well worth the patience even on a strain this quick to grow.
What to Do With Your Trim
Don’t bin the sugar leaves you remove while manicuring. Auto Haze is a resinous, trichome-coated plant, so its trim is excellent for making dry sift, bubble hash or rosin. That gives you a bonus run of spicy, herbal concentrate from material most growers would otherwise throw away.
Flavor and Terpenes
Auto Haze has a classic, clean Haze profile: an earthy, herbal flavor with the spicy, incense-like edge the Haze family is known for. It is a fresh, invigorating taste rather than a sweet or fruity one, and a good cure really brings that earthy-herbal character forward in the jar and on the inhale.
Its terpene profile is compact and focused on two players. Myrcene lays down an earthy, musky base, while pinene brings a crisp, fresh pine edge that lifts the herbal, spicy top notes. Together they give Auto Haze its clean, earthy-and-herbal character, the recognisable Haze scent that pairs naturally with its bright, energetic effect.
Effects and Best Use
With its high 18-24% THC and 80% sativa make-up, Auto Haze delivers a bright, lively experience. It is reported as energetic, euphoric and happy: a soaring, uplifting cerebral lift that sparks ideas, conversation and creativity, with little of the heavy body weight you get from an indica. This is a potent strain, so a little goes a long way, especially if you have a lower tolerance.
That makes it a true daytime strain, good for creative work, being active or a sociable afternoon when you want to feel clear, upbeat and engaged. The mix of a classic Haze head, a fast and simple autoflower grow and a clean, spicy-herbal flavor is exactly why this one stays popular.
Common Problems and Pro Tips
The single most important thing with any autoflower is to never stall its growth, because it cannot make up lost time on a fixed clock. Start the seed directly in its final pot instead of transplanting, keep it in healthy, living soil or a well-mixed medium, and don’t overfeed a fast plant. An auto that gets checked simply stays small and yields less.
Because its sativa side makes it tall and leafy, airflow and humidity matter. Auto Haze prefers a dry climate, so keep humidity low through flower, run good airflow over and under the canopy, and defoliate sensibly so light and air reach the lower buds on a stretchy plant. Keep training gentle, sticking to low-stress tucking rather than heavy topping.
As a pro tip, make its speed work for you: because it finishes in 8-10 weeks and flowers on age, you can run back-to-back crops or stagger plantings for a steady supply of a strain that would otherwise take months as a photoperiod Haze. Keep the feed light, run a clean plain-water flush at the end, then follow the trichomes and cure for three to four weeks.
FAQ
Is Auto Haze really an autoflower?
Yes. It is a true autoflower, crossing classic Haze with a ruderalis line, so it flowers automatically on age rather than on a light change. You do not switch to 12/12, and it runs its whole life cycle in about 8-10 weeks from seed, which is remarkably fast for a Haze.
How much THC does Auto Haze have?
It is a high-THC strain, testing at around 18-24%, which makes it genuinely potent. Combined with its 80% sativa genetics, it gives a bright, energetic, euphoric head with little heavy body weight. If you have a lower tolerance, start with a small amount, because this one is lively and strong.
How long does Auto Haze take to grow?
About 8-10 weeks from seed to harvest, since it flowers automatically on age. That is remarkably quick for a Haze, which normally takes months as a photoperiod plant. In a warm, dry climate you can run more than one crop a year, and indoors you can grow back-to-back.
What does Auto Haze taste like?
It has a classic, clean Haze flavor: earthy and herbal with a spicy, incense-like edge. Myrcene lays down the earthy, musky base and pinene adds a crisp, fresh pine lift, giving it a fresh, invigorating taste rather than a sweet or fruity one, which a good cure brings out fully.
Does Auto Haze need a dry climate?
It does best in a dry climate, which suits its Haze heritage and keeps the airy, resinous buds clean. In more humid regions, a well-ventilated, dehumidified indoor tent is the safer choice, with humidity kept low through flower and good airflow around its tall, leafy structure.
How much does Auto Haze yield?
Yields are strong for an auto: around 350-500 g/m² indoors and 550-600 g per plant outdoors in a good, dry season. Results depend on light, pot size and canopy health, so give it a good-sized pot from the start, plenty of light and an open, well-spaced canopy.
