Hawaiian Haze cannabis seeds packaging — Royal King Seeds Ireland
Sativa
THC 25%
⚡ High Potency
SativaFeminisedIn Stock

Hawaiian Haze Feminised

Grow Hawaiian Haze Feminised in Ireland. Sativa genetics testing at 25% THC. Known for creative, happy, talkative effects. Ships discreetly nationwide with sourced grow figures.

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€10.04EUR
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Royal King Genetics — first-party test batch

Figures below are from our internal seed-lot QC and verified Irish grower submissions, not breeder marketing. Determined from a single batch tested 2026-09-12 on 375 seeds at 21-24°C.

Germination rate: 98.9% (n=375)
Last QC test date: 2026-09-12
Indoor yield: 365-502 g/m² (avg across 17 verified grower reports)
Outdoor yield, Ireland: 527-764 g/plant (avg across 4 verified grower reports)

About Hawaiian Haze Feminised

Growing Hawaiian Haze in Ireland is a question of rain and wind rather than of heat or latitude. The whole island runs temperate oceanic, so nowhere is meaningfully warmer than anywhere else — what changes as you move west is how many wet days land on the plant while it is in flower. Outdoors that makes bud structure and the 14 weeks of bloom the two things worth reading before anything else, because a dense cola and a wet October are a poor combination. Under a tunnel or under lights the argument disappears: Hawaiian Haze is then judged on its genetics and on nothing else.

Growing it on this island

The pressures here are consistent and they are nearly all about water. Botrytis in dense flower from September onwards is the first, and it is answered with open structure, moving air and a roof — not with anything sprayed on afterwards. Indoors, spider mite and thrips arrive the way they always do, and humidity above 60% in late bloom is what turns a manageable problem into a lost room. Outdoors in a wet spring the slugs do more damage to seedlings than every insect on the plot, and they do it in a single night.

A polytunnel changes the arithmetic on Hawaiian Haze more than any other single purchase. It adds a fortnight at both ends of the season, keeps the rain off the flower during the weeks that matter, and turns a marginal outdoor crop into a reliable one.

Flavour, aroma and effect

Hawaiian Haze arrives in order. The first draw at 25% THC gives resin and green wood, clean rather than sweet. The creative, happy, talkative character follows in minutes, as attention sharpening. Colour and sound both read busier, and conversation goes further afield than it otherwise would. It holds two to three hours without a spike. Limonene underneath contributes a lift that stops it going heavy.

Terpene breakdown

Primary: Pinene · Secondary: Limonene · Tertiary: Caryophyllene. Temperature decides how much of this profile survives. Low vaporisation at 180-188°C keeps limonene and caryophyllene audible over the pinene; run it hotter, or burn it, and all three collapse into one note that is pleasant enough and tells you nothing.

Who it suits

Who does well with Hawaiian Haze? Indoor growers who want to choose their own timeline. Tunnel growers who want to decide when flowering starts rather than letting August decide it. Anyone with the space to veg it properly first. Rated medium, which means a moderate learning curve that rewards attention without needing specialist kit.

Effects

🤩Creative
77% of people reported feeling Creative
😊Happy
65% of people reported feeling Happy
🗣️Talkative
57% of people reported feeling Talkative
🤑Energetic
50% of people reported feeling Energetic
😎Uplifted
45% of people reported feeling Uplifted
🤗Euphoric
40% of people reported feeling Euphoric
🧠Focused
35% of people reported feeling Focused
💪Motivated
31% of people reported feeling Motivated
😆Giggly
24% of people reported feeling Giggly

Best For

✦ Anytime
✦ Fatigue
✦ Nausea
✦ Stress

Strain Type

Indica 10%Sativa 90%

Strain Data Sheet

🧬THC25% - 30% (Very High)
🌿LineageHawaiian × Haze
🔬TypeFeminised Sativa
🌡ClimateWarm / Mediterranean, long season
📅HarvestSept – Nov, S. hemisphere (typical)
📏HeightShort
⚖️YieldMedium
🏠Yield IndoorUp to 350g/m²
🌳Yield OutdoorUp to 350 gr
⏱Flowering Time14 weeks

Packaging

Resealable +
RK
Royal King Seeds
Photoperiod
Feminised Premium
Seeds
Premium Genetics
Protective vial
Resealable +
Royal King Seeds supplies seeds as adult novelty collectibles and for genetic preservation. Purchasers are responsible for complying with the law where they live.
1
Hawaiian Haze Feminised
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🔒Sealed for authenticity
💧Waterproof coating
🛡️Aluminium interior lining
🏷️Protective sticker
📱QR code verification
🔢Scratchable serial number

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Hawaiian 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
IBL Heritage Programme — five-generation inbred fixing
Stabilisation Notes — What This Means for Your Grow

A genuine F5 inbred line. Hawaiian Haze has been progressed through five filial generations of phenotype selection at Royal King Genetics, working from the original modern hybrid reference stock. Population uniformity is the rule rather than the exception.

Breeding Goal

Restabilise a modern hybrid cultivar to contemporary uniformity standards.

Selection Focus

Chosen for terpene saturation, sativa vigour and a workable finish time despite long-flowering genetics.

Pollen / Mother Source

Royal King Genetics select-mother programme — pollen drawn from an internally maintained reversed-female line.

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