Mr. Nice
by Mr. Nice Seedbank
Mango Haze is a regular cannabis seed from Mr. Nice that crosses three of the most decorated strains in cannabis history: Northern Lights #5, Skunk, and a true Haze. The result is a resin-heavy, sativa-leaning plant with a sweet mango aroma that fills the room long before harvest. If you want proven genetics from a seed bank that doesn't mess about, this is where your shortlist starts.
Three parent strains, all award-winners, all with decades of proven performance behind them. Northern Lights #5 brings the resin production and compact structure. Skunk adds vigour and reliability — the strain that basically taught a generation how to grow. And the Haze parent delivers that soaring, cerebral character and the extended flowering time that separates patient growers from the rest. Mr. Nice didn't just throw these together; this is Shantibaba's handiwork, and the man has been refining cannabis genetics since the early Greenhouse Seeds days.
What you get is a medium-tall plant that doesn't stretch into unmanageable territory but still carries that classic Haze architecture — long internodes, airy structure, and a main cola that packs on weight in the final weeks. The 9-10 week flowering window is actually quite reasonable for a Haze-dominant cross. Pure Hazes can push 14-16 weeks, so this is the express version without sacrificing the character that makes Haze genetics worth growing in the first place.
The aroma is the headline act. Sweet, ripe mango that comes through clearly in the last few weeks of flower. Not a subtle undertone you need to imagine — proper tropical fruit that sticks to your fingers when you handle the buds. The resin coverage on the main cola is dense and visible, the kind that makes trimming both a chore and a pleasure.
| Spec | Detail |
|---|---|
| Seed Bank | Mr. Nice |
| Seed Type | Regular (male and female) |
| Seeds Per Pack | 15 |
| Genetics | Northern Lights #5 x Skunk x Haze |
| Dominant Type | Sativa-dominant |
| Flowering Time | 9-10 weeks |
| Plant Height | Medium-tall |
| Aroma | Sweet mango |
| SKU | CSMN0007 |
Mango Haze grows to a medium-tall height, which in practice means you'll want at least 1.5 metres of vertical space indoors after accounting for pots, lights, and the gap between canopy and bulb. She responds well to topping and LST (low-stress training) if you need to keep things compact. The Haze genetics mean she'll stretch during the first 2-3 weeks of flower — plan for roughly a 50-70% height increase from the flip.
These are regular seeds, so expect roughly a 50/50 split of males and females from your 15-seed pack. That gives you a solid selection pool. We'd germinate 8-10 seeds, sex them early, and keep the strongest 4-5 females. The males are worth a look too if you're interested in breeding — with this genetic pedigree, the pollen is genuinely useful.
The honest limitation: 9-10 weeks of flowering is the minimum. Some phenotypes will push closer to 11 weeks, especially if your grow room runs cool. Don't rush the harvest. The trichomes need time to mature fully, and cutting early with a Haze cross means you lose exactly the qualities you planted it for. Check trichomes under magnification — you're looking for mostly cloudy with just a few amber heads.
| Strain | Genetics | Flowering Time | Character |
|---|---|---|---|
| Mango Haze | NL#5 x Skunk x Haze | 9-10 weeks | Sweet mango aroma, resin-heavy main cola, sativa-dominant |
| Super Silver Haze | Skunk x NL#5 x Haze | 10-11 weeks | More metallic/spicy, classic Haze stretcher, similar lineage |
| Critical Mass | Afghani x Skunk | 6-8 weeks | Indica-dominant, heavy yielder, faster finish, less complexity |
If you're choosing between Mango Haze and Super Silver Haze, the difference comes down to flavour and a week of patience. Mango Haze leans sweeter and fruitier; Super Silver Haze is sharper, more incense-like. Both share the NL#5/Skunk/Haze backbone. If you want something faster and heavier, Critical Mass finishes in 6-8 weeks but trades the sativa character for pure indica weight. We'd pick Mango Haze if flavour and the quality of the finished product matter more than speed.
Complete your setup with a propagation kit to give these seeds the best start — a heated propagator and root stimulator make a real difference with Haze genetics that can be slower to establish. If you're growing indoors, a carbon filter is worth grabbing early; the mango terpenes on this strain get loud in late flower.
We've carried Mr. Nice seeds since the early days, and there's a reason Shantibaba's genetics keep showing up in grow rooms 20 years later. The man doesn't chase trends. He works with proven parent stock and lets the plants speak for themselves. Mango Haze is a direct result of that philosophy — no gimmicks, no inflated THC percentage claims, just three battle-tested strains crossed with precision.
The 15-seed pack is generous by any standard. Most seed banks give you 5 or 10 regulars; Mr. Nice gives you 15, which means you have genuine room to pheno-hunt. With genetics this varied — three distinct parent lines — the phenotypic expression across a pack can surprise you. Some plants will lean more Northern Lights (compact, frosty, fast), others will stretch Haze-tall with airy buds and that deep tropical sweetness. Finding your keeper pheno from a full pack is half the fun.
The one thing to keep in mind: regular seeds require sexing. If you've only ever grown feminised seeds, this adds a step to your process. You'll need to identify and remove males before they pollinate your females, typically visible by week 2-3 of flower when males show pollen sacs at the nodes. It's not difficult — just something to watch for. The trade-off is genetic integrity. Regular seeds haven't been chemically treated or stressed to produce only females, which many experienced growers consider the gold standard for vigour and expression.
These are regular seeds, meaning the pack contains both male and female plants. From 15 seeds, expect roughly 7-8 females. You'll need to sex plants during early flower and remove males to prevent pollination.
Flowering takes 9-10 weeks under a 12/12 light cycle. Some phenotypes with stronger Haze expression may push to 11 weeks. Check trichome maturity under magnification rather than relying on a fixed calendar date.
Sweet, ripe mango dominates the aroma, especially in the final 3-4 weeks of flower. The scent is strong and carries — a carbon filter is recommended for indoor grows if discretion matters.
Yes, she does well indoors with at least 1.5 metres of vertical space. Topping and LST help manage the Haze stretch. She responds well to both soil and hydro setups, though soil tends to bring out more terpene complexity.
Each pack contains 15 regular seeds. That's more than most seed banks offer per pack, giving you a proper selection pool for pheno-hunting and enough margin to account for males.
She's manageable but not the easiest first grow. The 9-10 week flowering time requires patience, and regular seeds mean you need to identify and remove males. If you've done one or two grows already, you'll handle her fine. First-timers might find a feminised indica-dominant strain more forgiving.
Yield depends heavily on growing conditions, training, and the phenotype you select. The main cola produces dense, resin-coated buds, and plants respond well to topping for multiple cola sites. With proper lighting and nutrition, indoor yields are solid for a sativa-dominant strain.
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.
