Cannabis seeds
by Positronics Seeds
Northern Haze Auto is an autoflowering feminised cannabis seed that crosses two legendary parent strains — Northern Lights #5 and Haze — with Lowryder ruderalis genetics for a fast, fuss-reduced grow. Positronics Seeds engineered this sativa-dominant hybrid to deliver the resinous, flavourful buds of its champion lineage without demanding months of patience or a light-cycle babysitter. From seed to harvest in 10–11 weeks, it's one of the best autoflowering strains for growers who want serious potency without a serious time commitment.
Positronics made what amounts to a safe bet here: take two strains that have won more cups than most breeders' entire catalogues, cross them, then bolt on autoflowering genetics so the whole thing practically runs on autopilot. Northern Lights #5 brings the dense, resinous bud structure and that heavy body stone. Haze contributes the soaring cerebral side and that unmistakable sweet, spicy aroma. Lowryder handles the clock, flipping the plant into flower regardless of light schedule.
The result is a sativa-dominant hybrid that grows more like its Haze parent — tall, branchy, with multiple bud sites radiating off a thick central cola. For an autoflower, this plant gets big. We've seen growers underestimate it indoors and end up with branches pressing against their tent walls by week six. That's the honest limitation with Northern Haze Auto: it doesn't behave like a compact little auto. If you're working with a 60x60 tent, you'll want to apply some low-stress training (LST) early to keep the canopy flat and manageable. Outdoors, it stretches happily and rewards you for it.
The buds themselves are sticky, resin-caked things with a respectable 15–20% THC content. CBD sits at low to medium levels depending on the phenotype you get. Crack one open and you'll catch that classic Haze sweetness layered over a deeper, hashlike earthiness inherited from the Northern Lights side. It's a flavour profile that's instantly recognisable if you've spent any time around either parent strain.
This strain goes from seed to harvest in 10–11 weeks regardless of your light cycle, which is the whole point of autoflowering genetics. You don't need to switch to 12/12 — most growers run 18/6 or 20/4 throughout the entire lifecycle for maximum photosynthesis and yield.
Yield ranges from 50g to nearly 120g per plant. That's a wide spread, and where you land depends entirely on your setup. A plant in a small pot under a modest light will give you the lower end. Give it a 15-litre fabric pot, proper nutrients, and a decent LED, and you'll push toward that 120g ceiling. Outdoors in a warm, sunny climate with good soil, Northern Haze Auto really shows what it can do.
One thing we'd flag: because this strain grows tall and branchy for an auto, topping isn't recommended. Autoflowers don't have time to recover from high-stress training. Stick with LST — gently bend the main stem sideways and tie it down to open up the lower bud sites to light. This keeps the canopy even and prevents that one massive cola from shading everything below it.
| Specification | Detail |
|---|---|
| Seed Bank | Positronics Seeds |
| Genetics | Northern Lights #5 x Haze x Lowryder |
| Type | Autoflowering, Feminised |
| Dominance | Sativa-dominant hybrid |
| THC Content | 15–20% |
| CBD Content | Low to medium (phenotype dependent) |
| Seed to Harvest | 10–11 weeks |
| Yield per Plant | 50–120g |
| Growing Difficulty | Easy to moderate |
| Suitable Environment | Indoor and outdoor |
| Seeds per Pack | 5 |
The flavour is where Northern Haze Auto earns its keep. Expect a sweet, almost floral inhale that transitions into a denser, hashlike exhale — that's the Northern Lights #5 backbone coming through. The smoke is smooth and resinous, the kind that coats your lips and leaves a pleasant aftertaste. If you've ever smoked a well-grown Haze and thought "I wish this hit a bit heavier," that's essentially what Positronics was aiming for here.
Effects land somewhere in the middle of the spectrum. The Haze genetics deliver a clear, uplifting mental effect, while the Northern Lights side adds a warm, relaxing body component that settles in after 20–30 minutes. It's not a couch-lock strain by any stretch, but it's not pure racing-thoughts Haze either. According to research published in Frontiers in Plant Science, traditional consumer distinctions like "indica" and "sativa" don't always map neatly onto chemical profiles (Watts et al., 2019, PMC6396691) — but in this case, the balanced parentage does translate into a genuinely balanced effect.
At 15–20% THC, Northern Haze Auto sits in a comfortable potency range. Strong enough to be properly effective, not so strong that a single hit sends inexperienced users sideways. That said, the resin production on this strain is deceptive — those sticky buds pack more punch than they might look.
If you're weighing up Northern Haze Auto against other autos in the catalogue, here's how it stacks up:
| Feature | Northern Haze Auto | Typical Indica Auto | Typical Sativa Auto |
|---|---|---|---|
| Dominance | Sativa-dominant hybrid | Indica-dominant | Sativa-dominant |
| Seed to Harvest | 10–11 weeks | 8–9 weeks | 11–13 weeks |
| THC Range | 15–20% | 15–22% | 12–18% |
| Plant Height | Tall for an auto | Short and compact | Tall and stretchy |
| Yield per Plant | 50–120g | 40–80g | 30–90g |
| LST Recommended | Yes, indoors | Optional | Yes |
| Flavour Profile | Sweet, hash, floral | Earthy, skunky | Citrus, spicy |
Northern Haze Auto finishes faster than most sativa-leaning autos but takes a week or two longer than compact indicas. The trade-off is worth it — you get sativa-quality flavour and effects with yields that rival or beat most indica autos. If you want something even faster and don't mind sacrificing some height and yield, a compact indica auto might suit a very small grow space better. But for anyone with a bit of vertical room, Northern Haze Auto is the better choice.
Complete your setup with a propagation kit for reliable germination, and grab a set of soft plant ties for low-stress training — Northern Haze Auto responds well to it and you'll see noticeably better yields. If you're growing indoors, a carbon filter is worth adding to your basket; this strain gets properly fragrant once it hits flower.
This section is written for adults aged 18 and over. Cannabis affects everyone differently, and being informed is part of growing responsibly.
Common side effects associated with THC-containing cannabis include dry mouth, dizziness, and increased heart rate. At 15–20% THC, Northern Haze Auto sits in a moderate-to-strong potency band. According to pharmacological reviews, nervous system effects such as dizziness and somnolence are among the most frequently reported side effects of cannabis use, with number-needed-to-harm values as low as 3 in some clinical contexts (Jazz Pharmaceuticals, 2023). Psychiatric effects including anxiety and paranoia are more commonly associated with higher THC concentrations or overconsumption.
If you're new to cannabis or returning after a long break, the general principle observed in clinical literature is that lower doses tend to produce fewer adverse effects. Northern Haze Auto's balanced genetics — combining the Haze cerebral component with Northern Lights' body relaxation — may produce a less anxiety-prone experience than pure sativa strains, though individual responses vary based on personal tolerance and the specific phenotype grown.
Northern Haze Auto typically finishes in 10–11 weeks from germination. This is faster than most sativa-dominant autos, which often run 12–13 weeks. No light-cycle change is needed — the ruderalis genetics handle the flowering trigger automatically.
Yields range from 50g to nearly 120g per plant depending on growing conditions. Indoor growers in small setups will land closer to 50–70g, while outdoor plants or well-managed indoor grows with good lighting and nutrients can push toward 120g.
Low-stress training (LST) is the way to go. Bend the main stem sideways once the plant has 4–5 nodes and secure it with soft ties. Avoid topping or other high-stress techniques — autoflowers don't have enough vegetative time to recover properly.
Yes, but plan for height. This strain grows tall and branchy for an autoflower. In a tent under 1.2m, you'll need LST from early on. It performs well under 18/6 or 20/4 light schedules and doesn't need a light-cycle switch to flower.
The flavour combines sweet, almost floral Haze notes with a deeper, hashlike earthiness from the Northern Lights #5 side. The smoke is smooth and resinous. A proper 2-week cure in glass jars really brings out the sweetness.
The autoflowering version finishes faster and doesn't require light-cycle management, but photoperiod versions generally yield more and allow longer vegetative growth. For flavour and potency, Northern Haze Auto holds its own — the 15–20% THC range is competitive with many photoperiod strains.
Absolutely. It performs well outdoors in temperate to warm climates. Because it's autoflowering, you can plant it at almost any point in the growing season and it'll finish in 10–11 weeks regardless of daylight hours. Multiple outdoor harvests per season are possible in warmer regions.
Last updated: April 2026
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.
