Haze XL cannabis seeds packaging — Royal King Seeds Ireland
Indica
THC 17%
🎨 Creative
IndicaFeminisedIn Stock

Haze XL Feminised

Grow Haze XL Feminised in Ireland. Indica genetics testing at 17% THC. Known for euphoric, creative effects. Ships discreetly nationwide with sourced grow figures.

Select Pack Size
€12.78EUR
1
🇮🇪Free Irish Delivery
🌱Germination Promise
🔒Unmarked Packaging
⚗

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 2026-09-10 on 175 seeds at 21-24°C.

Germination rate: 96.9% (n=175)
Last QC test date: 2026-09-10
Indoor yield: 423-534 g/m² (avg across 11 verified grower reports)
Outdoor yield, Ireland: 393-592 g/plant (avg across 10 verified grower reports)

About Haze XL Feminised

Everything about Haze XL at harvest follows from one decision, which is when you stop. The figures are 400-600 g/m2 indoors and 600 g/plant outdoors, with resin filling towards 17% THC. Weight arrives late on a plant this indica-leaning — the 67/33 split stacks calyxes hard through the middle weeks and then thickens them. Growers who cut on the calendar rather than the glass lose that last stage, and it is the most valuable one.

Where the weight is won

Three parts of the 8-10 weeks of bloom account for most of the difference between a good result and an average one on a plant rated 400-600 g/m2 indoors and 600 g/plant outdoors.

The stretch, days 1-10 after the flip. Canopy height set here decides how evenly light lands for the rest of the run. Twenty to thirty per cent is typical; taking the lowest fans around day seven pushes energy up to the sites that will finish.

Weeks three to five. Caryophyllene production climbs through this stretch and responds to a 6-8°C gap between lights-on and lights-off. Outdoors an Irish September provides that without help; indoors it has to be built, at roughly 25°C by day and 18-20°C at night. Bloom feed goes potassium-forward around EC 1.6-1.8.

The final fortnight. Feeding stops, plain pH-corrected water goes on, and the loupe comes out daily. Fifteen to twenty per cent amber suits the weight of effect this one is grown for. Outdoors, that falls between late September and mid-October, and the forecast gets a say.

Flowering: 8-10 weeks. Indoor yield: 400-600 g/m2. Outdoor yield: 600 g/plant. Plant height: Small (0-120 cm). Rated easy difficulty.

Flavour, aroma and effect

Haze XL arrives in order. The first draw at 17% THC gives peppercorn heat that lands at the back of the throat. The euphoric, creative character follows in minutes, as weight behind the eyes that works down through the shoulders. By a quarter of an hour it reads as physical stillness rather than sedation — a strong disinclination to stand up. Two to three hours at a sensible dose. Myrcene underneath contributes depth beneath the rest.

Terpene breakdown

Primary: Caryophyllene · Secondary: Myrcene · Tertiary: Bisabolol. This is a combination that turns up repeatedly in cultivars people rate, and it is usually what gets commented on when a jar is opened for the first time after a proper cure. Caryophyllene anchors it, myrcene holds the middle, and bisabolol sits behind both — the last of those being what separates this from other strains leading on the same terpene.

Who it suits

Who does well with Haze XL? 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 easy, which means a moderate learning curve that rewards attention without needing specialist kit.

Effects

🤗Euphoric
74% of people reported feeling Euphoric
🤩Creative
70% of people reported feeling Creative
😌Relaxed
58% of people reported feeling Relaxed
😴Sleepy
58% of people reported feeling Sleepy
😊Happy
45% of people reported feeling Happy
🤤Hungry
41% of people reported feeling Hungry
🧘Calm
33% of people reported feeling Calm
🌿Stress Relief
20% of people reported feeling Stress Relief
💆Body High
17% of people reported feeling Body High

Best For

✦ Evening
✦ Relaxation
✦ Sleep Support

Strain Type

Indica 67%Sativa 33%

Strain Data Sheet

🧬THC17% - 21% (Medium-High)
🌿LineageIndica-Dominant Hybrid (Undisclosed Lineage)
🔬TypeFeminised Indica
🌡ClimateCool–temperate / continental
📅HarvestSept – Nov, S. hemisphere (typical)
📏HeightSmall (0-120 cm)
⚖️YieldHigh
🏠Yield Indoor400-600 g/m2
🌳Yield Outdoor600 g/plant
⏱Flowering Time8-10 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
Haze XL Feminised
royalkingseeds.ie
IG
FB
X
🔒Sealed for authenticity
💧Waterproof coating
🛡️Aluminium interior lining
🏷️Protective sticker
📱QR code verification
🔢Scratchable serial number

Related Strains

Alien Technology cannabis seeds packaging — Royal King Seeds Ireland
Indica
THC 15%
🎨 Creative

Alien Technology Feminised

EuphoricCreativeCalm
▼
€11.41EUR
Amazonian cannabis seeds packaging — Royal King Seeds Ireland
Indica
THC 18%
🎨 Creative

Amazonian Feminised

RelaxedEuphoricCreative
▼
€10.04EUR
Anonymous OG cannabis seeds packaging — Royal King Seeds Ireland
Indica
THC 20%
🎨 Creative

Anonymous OG Feminised

EuphoricCreative
▼
€12.78EUR
Badazz Cheese cannabis seeds packaging — Royal King Seeds Ireland
Indica
THC 18%
🎨 Creative

Badazz Cheese Feminised

EuphoricCreativeCalm
▼
€14.60EUR

Haze XL 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 heritage cultivar that we have taken through five rounds of inbred selection. The recent-era 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 Haze XL on the map.

Breeding Goal

Bring the original Haze XL reference profile back to true-to-type seed stock.

Selection Focus

Chosen for resin density, indica-leaning frame and tight internodes that suit indoor production.

Pollen / Mother Source

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

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