Mango Haze
Cannabis seeds
by Greenhouse Seeds
Mango Haze Feminised Cannabis Seeds by Greenhouse Seeds
Mango Haze (officially Arjan's Ultra Haze #2) is a feminised Sativa-dominant cannabis seed from Greenhouse Seeds that delivers forearm-length buds, 17–22% THC, and yields up to 800g/m² indoors. This triple-cross of Neville's Haze, Mango Haze, and Laos genetics took 2nd place at the 2005 High Times Cannabis Cup and 3rd at the Champions Cup the same year — two trophies from one phenotype tells you everything about the quality of this line. If you want a long-lasting, mood-elevating, uplifting Sativa high with a sweet, woodsy, fruity flavour profile, this is the seed to drop.
Which Mango Haze Pack Size Suits You
Greenhouse Seeds offers Mango Haze feminised seeds in three pack sizes. If you're running a single tent or testing the strain for the first time, the 3-pack gives you enough to find a strong pheno without overcommitting. The 5-pack is the sweet spot for a proper SOG or LST run — you'll have a spare if germination throws a wobble. The 10-pack is for growers who already know they love this genetics line and want to fill a room or keep mothers for cloning.
| Pack | Seeds | Best for |
|---|---|---|
| 3-pack | 3 feminised seeds | First-time growers, single-tent runs, pheno hunting on a budget |
| 5-pack | 5 feminised seeds | Full LST/SOG setup with a spare seed or two |
| 10-pack | 10 feminised seeds | Filling a room, selecting mothers, or multi-cycle planning |
Mango Haze Specifications
Mango Haze feminised seeds carry a specific genetic profile that shapes every aspect of the grow — from canopy height to flowering duration. Here are the numbers that matter.
| Specification | Detail |
|---|---|
| Seed bank | Greenhouse Seeds |
| Official name | Arjan's Ultra Haze #2 |
| Genetics | Neville's Haze x Mango Haze x Laos |
| Type | Feminised (photoperiod) |
| Dominant | Sativa |
| THC | 17–22% |
| Indoor flowering time | 12–16 weeks |
| Indoor yield | Up to 800g/m² |
| Outdoor yield | Up to 1,000g per plant |
| Outdoor harvest | End of October |
| Growth pattern | Tall, long branches — responds well to LST |
| Flavour profile | Sweet, woodsy, fruity |
| Awards | 2nd Place High Times Cannabis Cup 2005, 3rd Place Champions Cup 2005 |
| Available packs | 3, 5, or 10 seeds |
Running a Sativa this tall indoors? You'll want a tent with vertical headroom to match — the Dark Box 120x120x200 gives you the ceiling space Mango Haze demands once she stretches. Pair with a carbon filter and extraction fan setup to manage the fruity terps during late flower. If you're training these branches down with LST, a set of plant clips and soft garden wire saves you improvising with shoelaces at 2am.
Why Mango Haze Feminised Seeds Deserve a Spot in Your Grow
Most Sativa-dominant strains make you choose: potency or yield. You get one, maybe a hint of the other, and you live with the trade-off. Mango Haze doesn't ask you to compromise. At 17–22% THC with indoor yields reaching 800g/m², this is a Sativa that produces like an Indica — without the couch-lock. The genetics behind it explain why: Neville's Haze brings the cerebral potency, Mango Haze adds the tropical sweetness, and the Laos landrace contributes vigour and resin production. Three proven lines, blended by Greenhouse Seeds' Arjan Roskam, and validated by two Cannabis Cup placements in a single year.
The honest limitation? Patience. A 12–16 week flowering window is not for growers who want to flip and chop in 8 weeks. That's a full extra month (sometimes two) compared to a fast Indica hybrid. If you're running a perpetual cycle with staggered harvests, you'll need to plan around Mango Haze's timeline. But here's what you get for that wait: buds as long as your forearm, coated in a thick mat of trichomes and studded with almost-white pistils that look like they've been dusted with icing sugar. The visual alone makes this strain a showpiece. The smoke — sweet, woodsy, fruity — makes it a keeper.
We'd pick Mango Haze over Greenhouse Seeds' Super Silver Haze if you want a heavier yield and don't mind the longer flower. Super Silver Haze finishes faster (10–11 weeks) but tops out around 600g/m² indoors. Mango Haze pushes 800g/m² and delivers a more complex terpene profile. If you're growing outdoors in a warm climate and can let her run until end of October, the 1kg-per-plant outdoor yield is genuinely staggering for a Sativa.
How to Grow Mango Haze Feminised Seeds
- Germinate your Mango Haze seeds using the paper towel method or directly in a propagation plug. Keep the environment at 22–26°C with high humidity (70–80%). Taproots typically emerge within 24–72 hours.
- Transplant seedlings into their vegetative containers once the first true leaves appear. Use a well-aerated growing medium — coco/perlite mixes or light soil work well with Sativa-dominant genetics that don't like waterlogged roots.
- Veg for 3–5 weeks under 18/6 light. Mango Haze grows tall with long branches, so start Low Stress Training (LST) early — gently bend the main stem and tie it down to expose lower bud sites. This is critical for indoor growers who need to control canopy height before the stretch hits.
- Flip to 12/12 when the canopy fills roughly 60–70% of your grow space. Expect a significant stretch during the first 2–3 weeks of flower — Mango Haze can double or even triple in height. Keep tying down branches and consider a SCROG net to spread the canopy evenly.
- Monitor flowering closely from week 8 onwards. The 12–16 week range means you'll need to read the trichomes rather than rely on a calendar. Harvest when trichomes shift from clear to mostly milky with a few amber heads — this is where the uplifting, cerebral Sativa effect peaks.
- Outdoor growers: plant out after the last frost, in a spot with maximum sun exposure. Feed generously during veg and early flower. Expect harvest readiness at the end of October. In cooler climates, watch for late-season humidity and consider a rain cover to protect those massive, dense buds from mould.
- Dry in a dark, ventilated space at 18–22°C and 55–60% humidity for 7–14 days. Cure in glass jars for at least 2–4 weeks — the woodsy, fruity terpene profile develops significantly during a proper cure. Don't rush this step; you've already waited 16 weeks for flower.
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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.