Mango Haze cannabis seeds packaging — Royal King Seeds UK
Hybrid
THC 21%
🎨 Creative
HybridFeminisedIn Stock

Mango Haze Feminised

Feminised PhotoperiodSee Lab Report →

Grow Mango Haze Feminised in the UK. Hybrid genetics at 21% THC, known for happy, relaxed, uplifted effects.

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Royal King Genetics — first-party test batch

Figures below are from our internal seed-lot QC and verified UK grower submissions, not breeder marketing. Determined from a single batch tested 2026-09-21 on 300 seeds.

Germination rate: 99.2% (n=300)
Last QC test date: 2026-09-21
Indoor yield: 468-644 g/m² (avg across 16 verified grower reports)
Outdoor yield: 678-982 g/plant (avg across 3 verified grower reports)

About Mango Haze Feminised

Cured properly and opened cold, Mango Haze leads with caryophyllene: dry black pepper that catches at the back of the throat, clove and warm wood underneath it. Underneath it limonene adds a bright edge that keeps the nose from turning heavy, and it reads mid-palate rather than on the first pass. This 40/60 hybrid tests at 21% THC, but potency is the least interesting number here: what separates Mango Haze from the others on the same shelf is how the aroma behaves across a cure, and that is a question of storage and patience rather than genetics alone.

Growing it for the nose rather than the scales

Chasing terpene expression in Mango Haze pulls against chasing yield, and it is worth knowing which one you are doing before you start. The Caryophyllene/Limonene/Myrcene profile does its best work in living soil, where the microbial side produces secondary compounds a bottle cannot. That is easier here than it sounds: decent peat-free compost and worm castings are a garden centre purchase in most British towns.

Through the 8-11 weeks of bloom, stop foliar spraying after week two — anything landing on developing trichomes is still there at harvest and you will taste it. The final three weeks decide which terpenes dominate the cured flower: nights held at 16-18°C push caryophyllene forward, while a warmer finish protects the lighter myrcene notes at the top.

The cure is where most of the flavour is lost in this country, and the reason is the weather. A 10-14 day hang wants 15-18°C at 55-60% relative humidity, which a British autumn will not give you in a spare room — a temperature-controlled cupboard or a wine fridge set to 16°C solves it for the price of one wasted harvest. Then into glass, burped twice a day for the first fortnight. The limonene layer that makes this one worth growing does not appear until somewhere between weeks three and four in the jar.

Flowering: 8-11 weeks. Indoor yield: 450-550 g/m2. Outdoor yield: Up to 650 gr. Rated intermediate difficulty.

Flavour, aroma and effect

Mango Haze arrives in stages. The first draw at 21% THC brings dry pepper that registers at the back of the throat. The happy, relaxed, uplifted character follows within minutes, as a head and body effect at once. The mind stays clear while the muscles let go by degrees, which is what makes it adaptable — a small dose carries an afternoon, a larger one turns into an evening. The limonene underneath adds a lift that stops it turning heavy.

Terpene breakdown

Primary: Caryophyllene · Secondary: Limonene · Tertiary: Myrcene. How this profile survives the journey from flower to vapour depends on temperature. Low vaporisation, 180-188°C, keeps the limonene and myrcene audible over the caryophyllene base. Run it hotter, or burn it, and the three collapse into one note — pleasant enough, but none of the complexity that made it worth choosing.

Who it suits

Who does well with Mango Haze? Indoor growers who want the timeline under their own control. Outdoor growers who want to choose when flowering starts. Anyone with the room and the patience to veg it properly before flipping. Difficulty is rated intermediate, which means a moderate learning curve that rewards attention without demanding a laboratory.

Effects

😊Happy
72% of people reported feeling Happy
😌Relaxed
65% of people reported feeling Relaxed
😎Uplifted
58% of people reported feeling Uplifted
🤩Creative
56% of people reported feeling Creative
🤗Euphoric
47% of people reported feeling Euphoric
🤤Hungry
41% of people reported feeling Hungry
😴Sleepy
38% of people reported feeling Sleepy
😆Giggly
31% of people reported feeling Giggly
🧠Focused
21% of people reported feeling Focused

Strain Type

Indica 40%Sativa 60%

Strain Data Sheet

🧬THC21% - 26% (High)
🌿LineageNorthern Lights #5 × Haze × Skunk #1
🔬TypeFeminised Hybrid
🌡ClimateTemperate, adaptable
📅HarvestLate Sept – Oct, UK outdoor (typical)
📏Height100 – 160 cm (typical)
⚖️YieldHigh
🏠Yield Indoor450-550 g/m2
🌳Yield OutdoorUp to 650 gr
⏱Flowering Time8-11 weeks

Packaging

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Royal King Seeds
Photoperiod
Feminised Premium
Seeds
Premium Genetics
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Royal King Seeds supplies seeds as adult novelty collectibles and for genetic preservation. Purchasers must comply with all applicable United Kingdom legislation.
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Mango Haze Feminised
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Mango Haze Feminised — Breeder Information

Royal King Genetics

Bred and stabilised in-house by Royal King Genetics — our internal breeding team. Every batch is QC'd and germ-tested above 99% before it ships. Read the full breeding process and about page.

Stabilisation Level
F5 IBL
Generations
5+
Breeding Programme
Royal King Genetics IBL — heritage cultivar restabilisation
Stabilisation Notes — What This Means for Your Grow

A heritage cultivar that we have taken through five rounds of inbred selection. The 1990s heritage reference profile — terpene fingerprint, finishing window, plant frame — has been welded into the population. Every seed in the pack carries the trait set that put Mango Haze on the map.

Breeding Goal

Pin down the original 1990s heritage terpene profile in modern seed form.

Selection Focus

Chosen for hybrid frame, clean terpene expression and consistent yield across the population.

Pollen / Mother Source

Royal King Genetics breeding facility — pollen from internally selected sibling males of the recurrent parent.

Last Batch QC Verified
2 September 2026· 99%+ germination