Sour Dubble cannabis seeds packaging — Royal King Seeds Ireland
Hybrid
THC 26%
⚡ High Potency
HybridFeminisedIn Stock

Sour Dubble Feminised

Sour Dubble Feminised — premium hybrid cannabis seeds suited to Irish growing conditions. 26% THC with relaxed, happy, euphoric effects. Discreet delivery across Ireland, with sourced grow figures on every strain page.

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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 2026-09-13 on 325 seeds at 20-23°C.

Germination rate: 96.5% (n=325)
Last QC test date: 2026-09-13
Indoor yield: 458-594 g/m² (avg across 6 verified grower reports)
Outdoor yield, Ireland: 398-640 g/plant (avg across 9 verified grower reports)

About Sour Dubble Feminised

Does Sour Dubble finish outdoors in Ireland? It does, planted out at the end of May and cut by early October. The 61/39 balance handles an Irish season without special treatment, which is most of the reason to choose it. Bloom takes ±58 days, so the harvest date is set by the calendar far more than by your technique.

What should I expect to take off it? 275–475 g/m² indoors and 450–650 g/plant outdoors are the published figures, and both assume a full light or a full season plus a root run to match. A tunnel gets you most of the way to the outdoor number; a windowsill will not. At 26% THC the effort is well spent either way.

Is it a sensible first grow? Reasonably. Anyone who has finished one grow will manage this one; it asks for consistency rather than expertise.

Other questions that come up about Sour Dubble

Soil or coco? Coco with fertigation at EC 1.4-1.8 through bloom if you are there daily and want speed. Peat-free soil with slow amendments — fish, blood and bone, seaweed meal, rock phosphate — if you are not, and want flavour. Both suit this hybrid; the deciding factor is your week, not the plant.

How does it handle the weather here? Hybrid vigour covers most of what an Irish summer does. Keep the root zone under 28°C and do not transplant into a warm spell.

When does bloom feed start? Within a week of the first pistils. The 61/39 balance shifts demand quickly at the transition — phosphorus and potassium up, nitrogen down. Soil growers top-dress; coco and hydro switch formula immediately.

Tunnel, outdoors or indoors? A tunnel is the best value of the three here. Indoors you own the ±58 days of bloom completely; outdoors the plant gets light no lamp matches and can reach 450–650 g/plant, and pays for it in rain. Flowering: ±58 days. Indoor yield: 275–475 g/m². Outdoor yield: 450–650 g/plant. Plant height: 120–160 cm. Rated easy difficulty.

What Sour Dubble is like in practice

The catalogue lists relaxed, happy, euphoric, and that matches what growers here report back. At 26% THC this hybrid sits where the balance is the argument for it. Small doses stay functional, larger ones relax properly, and the 61/39 split means the direction is set by the amount rather than fixed by the plant. The Caryophyllene and Myrcene together leave warmth and spice, drying on the exhale.

Suited to most occasions, with the dose doing the steering.

Terpene breakdown

Primary: Caryophyllene · Secondary: Myrcene · Tertiary: Humulene. The three shift relative to each other across the cure. Straight off the dry the caryophyllene dominates; three or four weeks sealed in glass at 16-18°C and the humulene underneath comes up to meet it. Vaporising between 180°C and 195°C catches the widest span, because heat takes the lighter humulene molecules first.

Who it suits

Sour Dubble suits growers with the fundamentals in place. Understand pH, rough nutrient ratios and a light cycle before committing to it; it asks for competence rather than expertise. Photoperiod genetics leave plant size and harvest date under your control — veg longer for a bigger plant, or flip early when the ceiling is low. A bloom of ±58 days fits inside the season here for outdoor growers, with a tunnel making it comfortable rather than tight.

Effects

😌Relaxed
72% of people reported feeling Relaxed
😊Happy
65% of people reported feeling Happy
🤗Euphoric
60% of people reported feeling Euphoric
🤩Creative
56% of people reported feeling Creative
😎Uplifted
45% of people reported feeling Uplifted
🤤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

Best For

✦ Anytime
✦ Relaxation
✦ Stress Relief

Strain Type

Indica 61%Sativa 39%

Strain Data Sheet

🧬THC26% - 31% (Very High)
🌿LineageBalanced Hybrid (Undisclosed Lineage)
🔬TypeFeminised Hybrid
🌡ClimateTemperate, adaptable
📅HarvestSept – Nov, S. hemisphere (typical)
📏Height120–160 cm
⚖️YieldMedium – High
🏠Yield Indoor275–475 g/m²
🌳Yield Outdoor450–650 g/plant
⏱Flowering Time±58 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.
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Sour Dubble Feminised
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🛡️Aluminium interior lining
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🔢Scratchable serial number

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Sour Dubble 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
F3
Generations
3+
Breeding Programme
Filial Stabilisation (F3) — advanced refinement
Stabilisation Notes — What This Means for Your Grow

Sour Dubble sits in advanced filial refinement (F3). Trait expression is consistent across the pack with the minor pheno-to-pheno variation that is typical at this stage. Active selection continues toward F4.

Breeding Goal

Cull off-type phenos in Sour Dubble at F3 to lock the cross profile.

Selection Focus

Chosen for terpene profile, vigour, structure and finish-time consistency.

Pollen / Mother Source

Royal King Genetics in-house mother stock — pollen taken from a sibling male drawn from the same selected pheno population.

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