Critical Neville Haze Auto

Critical Neville Haze Auto Cannabis Seeds

Critical Neville Haze Auto is an autoflowering feminised cannabis seed from Delicious Seeds that delivers a genuine 90% sativa profile without the headaches sativas usually bring indoors. Born from a cross between Neville Haze Auto (originally from World of Seeds) and Delicious Seeds' own Il Diavolo Auto, this strain packs 21% THC, yields up to 600 g/m² indoors, and finishes flowering in just 40-45 days. For indoor growers who've always wanted a proper sativa but couldn't justify the space or the wait — this is the one we'd point you towards.

Why Critical Neville Haze Auto Deserves Your Tent Space

Here's the problem with most sativa-dominant strains indoors: they stretch like mad, they flower for 12-14 weeks, and by the time you're done, your electricity bill looks like a mortgage payment. We've seen growers give up on sativas entirely after one lanky Haze took over a 120x120 tent and still wasn't ready after 90 days of bloom. It's enough to make you swear off sativas forever.

Critical Neville Haze Auto sidesteps all of that. The Il Diavolo Auto genetics keep the plant compact — genuinely manageable in an 80x80 or even a 60x60 if you're disciplined — while the flowering period clocks in at 40-45 days. That's closer to a fast indica than a traditional sativa. You get the full sativa character (the metallic-sweet taste that Neville Haze is famous for, the energising effects, the trichome coverage that looks like the plant's been dipped in sugar) without sacrificing your entire grow schedule.

And then there's the yield. 600 g/m² from an autoflower is not normal. Most autos top out around 350-450 g/m² if you're doing everything right. Critical Neville Haze Auto pushes well beyond that ceiling. Outdoors, 400 g/plant in roughly 3 months from seed is equally impressive. If you're after a sativa auto that actually produces, this is the best autoflowering sativa for indoor yield we've come across from Delicious Seeds.

Trichome Production and 21% THC — What to Expect

The resin production on Critical Neville Haze Auto is genuinely remarkable. Delicious Seeds describe it as "almost out of this world," and based on what growers report, that's not marketing fluff. The trichome density is what drives the 21% THC reading — a figure that puts this auto on par with many photoperiod strains. For context, the average autoflower sits somewhere between 15-18% THC. Critical Neville Haze Auto clears that by a comfortable margin.

The flavour is metallic and sweet, almost identical to the original Neville Haze. If you've ever had a proper Haze and remember that distinctive sharp, slightly metallic inhale followed by a sweet exhale — that's what you're getting here. It's not a fruity candy strain. It's old-school Haze character in a modern autoflowering package. The one honest limitation: if you're after a purely sweet or fruity terpene profile, this isn't it. The metallic edge is the signature, and it's there by design.

How to Grow Critical Neville Haze Auto Seeds

1. Germinate your seeds using the paper towel method or directly in a small pot of moist, lightly fertilised soil. Keep temperatures between 22-26°C and humidity around 70% during germination.
2. Once sprouted, the plant enters a short vegetative phase of roughly 2 weeks. During this window, give it 18-20 hours of light per day. Because it's an autoflower, you don't need to switch light cycles — but 18/6 or 20/4 works well throughout the entire life cycle.
3. Flowering begins automatically around week 3 and lasts 40-45 days. You'll notice preflowers forming without any change to your light schedule. This is where the Il Diavolo genetics keep vertical stretch in check, so you shouldn't need aggressive training — though a light LST (low stress training) in the first two weeks of veg can help open the canopy and boost light penetration.
4. Feed with a balanced nutrient schedule. Start light — autos are sensitive to overfeeding, especially in the first 2 weeks. Ramp up bloom nutrients once you see flower sites forming. With the heavy resin production on this strain, a PK booster in weeks 4-6 of flower can help the plant reach its full trichome potential.
5. Harvest when trichomes shift from clear to milky with a few turning amber. Given the 90% sativa genetics, harvesting with mostly milky trichomes (and fewer ambers) will preserve the energetic, uplifting character. Waiting too long pushes the effect towards a heavier, more sedative profile — which somewhat defeats the purpose of growing a sativa.
6. Dry 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. The metallic-sweet Haze flavour develops fully during a proper cure — rushing this step loses a lot of what makes the strain special.

Critical Neville Haze Auto vs Other Sativa Autoflowers

If you're comparing sativa autos, the field is smaller than you'd think. Most autoflower catalogues lean heavily indica. Critical Neville Haze Auto stands out on three fronts: the 90% sativa genetics (most "sativa autos" are closer to 60/40), the 21% THC (well above the auto average of 15-18%), and the 600 g/m² indoor yield (roughly 30-40% higher than a typical autoflower). The trade-off? It's not the fastest auto on the market — some indica-dominant autos finish in 55-60 days total from seed. Critical Neville Haze Auto takes about 55-60 days total (2 weeks veg + 40-45 days flower), which is still rapid for a sativa but not the absolute quickest if speed is your only priority.