Opal OG Kush cannabis seeds packaging — Royal King Seeds Ireland
Indica
THC 23%
🌙 Sleep Aid
IndicaFeminisedIn Stock

Opal OG Kush Feminised

Opal OG Kush Feminised cannabis seeds for Irish growers. Indica strain · 23% THC · relaxed, creative, calm. Discreet packaging, nationwide delivery, sourced grow figures.

Select Pack Size
€10.95EUR
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 2026-09-06 on 425 seeds at 21-24°C.

Germination rate: 97.3% (n=425)
Last QC test date: 2026-09-06
Indoor yield: 491-640 g/m² (avg across 11 verified grower reports)
Outdoor yield, Ireland: 483-658 g/plant (avg across 6 verified grower reports)

About Opal OG Kush Feminised

Growing Opal OG Kush 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 55-65 days 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: Opal OG Kush 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 Opal OG Kush 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

Opal OG Kush arrives in order. The first draw at 23% THC gives earth and musk, coating rather than sharp. The relaxed, creative, calm 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. Caryophyllene underneath contributes warmth that keeps it anchored.

Terpene breakdown

Primary: Myrcene · Secondary: Caryophyllene · Tertiary: Linalool. 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. Myrcene anchors it, caryophyllene holds the middle, and linalool 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 Opal OG Kush? 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 intermediate, which means a moderate learning curve that rewards attention without needing specialist kit.

Effects

😌Relaxed
72% of people reported feeling Relaxed
🤩Creative
70% of people reported feeling Creative
🧘Calm
60% of people reported feeling Calm
😴Sleepy
58% of people reported feeling Sleepy
😊Happy
45% of people reported feeling Happy
🤤Hungry
41% of people reported feeling Hungry
🤗Euphoric
33% of people reported feeling Euphoric
🌿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 80%Sativa 20%

Strain Data Sheet

🧬THC23% - 27% (High)
🌿LineageFrankenstein × Lemon OG Kush
🔬TypeFeminised Indica
🌡ClimateCool–temperate / continental
📅HarvestSept – Nov, S. hemisphere (typical)
📏Height90-120 cm. Medium
⚖️YieldMedium – High
🏠Yield Indoorup to 400 g/m2
🌳Yield Outdoorup to 400 g/plant
⏱Flowering Time55-65 days

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
Opal OG Kush Feminised
royalkingseeds.ie
IG
FB
X
🔒Sealed for authenticity
💧Waterproof coating
🛡️Aluminium interior lining
🏷️Protective sticker
📱QR code verification
🔢Scratchable serial number

Related Strains

OG’s Pearl cannabis seeds packaging — Royal King Seeds Ireland
Indica
THC 17%
🌙 Sleep Aid

OG’s Pearl Feminised

RelaxedCalm
▼
€10.95EUR
Sweet Lafayette cannabis seeds packaging — Royal King Seeds Ireland
Indica
THC 19%
🌙 Sleep Aid

Sweet Lafayette Feminised

RelaxedSleepyHappy
▼
€10.95EUR
OG's Pearl cannabis seeds packaging — Royal King Seeds Ireland
IndicaAuto
THC 17%
😊 Beginner Pick

OG's Pearl Auto

RelaxedCalm
▼
€10.95EUR
Cascadia Kush cannabis seeds packaging — Royal King Seeds Ireland
Indica
THC 24%
📈 High Yield

Cascadia Kush Feminised

EuphoricCalm
▼
€11.41EUR

Opal OG Kush 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
BX3
Generations
4+
Breeding Programme
Royal King Genetics Backcross Line — BX3 clone-only restabilisation
Stabilisation Notes — What This Means for Your Grow

Three rounds of backcrossing to the parental line have welded the Opal OG Kush cut into the population. The compact internode spacing that made the original mother famous now expresses across the whole pack — not just in one or two lucky phenos.

Breeding Goal

Translate a clone-only recent-era cultivar to seed without losing the mother profile.

Selection Focus

Chosen for purple/dark expression where it shows, dense bud structure and a true indica relaxation profile.

Pollen / Mother Source

Royal King Genetics elite-cut archive — pollen from a maintained S1 line of the original elite mother.

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