Cannabis seeds
by Greenhouse Seeds
Neville's Haze is a near-pure sativa cannabis seed strain from Greenhouse Seeds that delivers one of the most intense cerebral highs you'll find in a seed catalogue. With 21% THC, a 14-week flowering period, and yields that can hit 1.2kg per plant outdoors, this is a grower's strain — built for patience, rewarded with abundance. If you want a seed that produces bud capable of sending your train of thought into overdrive, this is the one.
Greenhouse Seeds offers Neville's Haze feminized seeds in three pack sizes. Given the long flowering time, we'd suggest the 5-pack as the sweet spot — enough to select the strongest phenotypes without committing to a full 10-pack on your first run.
| Pack | Seeds | SKU | Best For |
|---|---|---|---|
| Small | 3 | CSGH0103 | Test run — see how she handles your setup |
| Standard | 5 | CSGH0104 | Our pick — room to select the best phenotypes |
| Large | 10 | CSGH0105 | Dedicated growers planning a full canopy |
| Spec | Value |
|---|---|
| Seed Bank | Greenhouse Seeds |
| Genetics | Near-pure Sativa with slight Indica influence |
| Sex | Feminized |
| THC Content | 21% |
| Flowering Time | 14 weeks (some phenotypes longer) |
| Indoor Yield | Up to 700 g/m² |
| Outdoor Yield | Up to 1.2 kg per plant |
| Outdoor Harvest | Mid-November |
| Bud Structure | Candle-shaped, dense, heavy trichome coverage |
| Awards | 2nd Prize, Sativa Category, Cannabis Cup |
| Available Packs | 3, 5, or 10 seeds |
Growing Neville's Haze indoors? Her 14-week flower cycle and heavy buds demand solid support and consistent environment control. A proper grow tent and plant support stakes or a SCROG net will keep those candle-shaped colas from snapping branches. If you're running a long-flower sativa for the first time, a complete grow kit takes the guesswork out of ventilation and lighting.
We get it — 14 weeks of flowering sounds like an eternity when most indica-dominant strains finish in 8 or 9. But there's a reason experienced growers keep coming back to Neville's Haze, and it's not nostalgia. This strain produces a cerebral, stimulating, creative, and deeply introspective effect profile that shorter-flowering hybrids simply don't replicate. The 21% THC content isn't just a number on a page; it's concentrated almost entirely into that classic sativa head-space that makes you want to write, paint, or have a three-hour conversation about the nature of consciousness.
The yield numbers speak for themselves. Indoors, 700 g/m² is genuinely impressive for any strain, let alone a sativa-dominant one. Outdoors, where she has room to stretch, 1.2 kg per plant is the kind of return that makes the long season worthwhile. The buds grow in candle-shaped formations, wear a hairdo of white, lime-green, and orange-to-rust-coloured pistils, and get so heavy with trichomes that you'll need to support the branches or watch them bow and snap. That's not a design flaw — that's abundance.
The honest limitation: this is not a beginner-friendly grow. The 14-week flowering period (some phenotypes push even longer) means more time for things to go wrong — pests, nutrient drift, humidity issues. You need patience and a stable environment. If you're on your first or second grow, something like a faster-finishing hybrid from Greenhouse Seeds' catalogue might be a better starting point. But if you've got a few harvests under your belt and you want to grow something genuinely special, Neville's Haze is the strain we'd point you toward.
The aroma profile on this strain is unmistakable. Greenhouse Seeds describes it as "a skunk got into your spice rack," and that's honestly the most accurate shorthand we've come across. There's a sharp, pungent skunk backbone layered with warm spice notes — think cumin, black pepper, and a hint of incense. When you break up the cured buds, a sweet, tart, damp smell hits your nose, almost like overripe fruit left in a humid greenhouse. It fills a room fast. If you're growing indoors, a carbon filter isn't optional — it's survival.
The trichome coverage is extraordinary. These buds look frosted, almost white under certain light, and they're sticky enough to gum up a cheap grinder in two sessions. If you're planning to process any of your harvest for concentrates, Neville's Haze is one of the best sativa strains for resin production.
If you're specifically after a long-flowering sativa with serious cerebral effects and you're comparing options, Neville's Haze sits at the top of Greenhouse Seeds' sativa lineup for a reason. The 2nd Prize in the Sativa Category at the Cannabis Cup isn't just a sticker on the packet — it's recognition from judges who've smoked hundreds of entries. Compared to shorter-flowering sativa-dominant hybrids, the extra weeks translate directly into more complex terpene development and a more layered, introspective effect profile. You're trading time for quality, and the 700 g/m² indoor yield means you're not sacrificing quantity either.
For growers who want sativa effects but can't commit to 14+ weeks, Greenhouse Seeds' Arjan's Haze or Super Silver Haze both finish faster. They're solid strains. But they don't hit the same depth. Neville's Haze is the one we'd grow if we had one shot at a sativa harvest and the patience to see it through.
Neville's Haze requires a minimum of 14 weeks of flowering. Some phenotypes push to 16 weeks. This is one of the longest flowering periods you'll encounter in commercially available cannabis seeds, and it's the trade-off for the strain's intense sativa-dominant effects and massive yields.
Neville's Haze tests at 21% THC. That's concentrated into an almost pure sativa genetic profile, which means the effect leans heavily cerebral — stimulating, creative, and introspective rather than sedating.
Honestly, no. The 14-week flowering period leaves a long window for problems like pests, nutrient issues, or humidity fluctuations. The branches also need physical support as buds develop. We'd recommend at least 2–3 successful harvests before taking on Neville's Haze.
Yes, and she performs well indoors — up to 700 g/m². The main challenge is height management. As a near-pure sativa, she stretches significantly during flowering. Use topping, low-stress training, or a SCROG net to keep the canopy manageable in a tent setup.
Sharp skunk layered with warm spice — cumin, black pepper, a hint of incense. Breaking up the buds releases a sweet, tart, damp aroma. It's pungent. If you're growing indoors, run a carbon filter or your entire building will know about it.
Mid-November in the Northern Hemisphere. This makes her best suited to warm, dry climates — Mediterranean, southern Spain, parts of California. In northern Europe, the late harvest date and autumn rain create a high risk of bud rot.
Up to 1.2 kg per plant outdoors, given a full season in a warm climate. That's an exceptional yield for a sativa-dominant strain. Indoor yields reach up to 700 g/m², which is equally impressive for a 14-week flower.
Yes. The Greenhouse Seeds Neville's Haze seeds we carry are feminized, meaning every seed produces a female plant. No need to sex your plants or worry about males pollinating your crop.
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.
