Chem Valley Kush cannabis seeds packaging — Royal King Seeds Ireland
Sativa
THC 20%
🎨 Creative
SativaFeminisedIn Stock

Chem Valley Kush Feminised

Grow Chem Valley Kush Feminised in Ireland. Sativa genetics testing at 20% THC. Known for euphoric, creative, calm effects. Ships discreetly nationwide with sourced grow figures.

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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 2026-09-06 on 100 seeds at 21-24°C.

Germination rate: 98.8% (n=100)
Last QC test date: 2026-09-06
Indoor yield: 375-552 g/m² (avg across 7 verified grower reports)
Outdoor yield, Ireland: 407-610 g/plant (avg across 6 verified grower reports)

About Chem Valley Kush Feminised

Does Chem Valley Kush finish outdoors in Ireland? It does, planted out at the end of May and cut by early October. At 23/77 it will want height, and height outdoors here means wind. Stake it earlier than you think you need to. Bloom takes 9-11 weeks, so the harvest date is set by the calendar far more than by your technique.

What should I expect to take off it? Up to 550g/m² indoors and Up to 650 gr 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 20% 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 Chem Valley Kush

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 sativa; the deciding factor is your week, not the plant.

How does it handle the weather here? The open structure sheds heat and, more usefully, dries out quickly after rain. Wind is the real problem for a plant this shape — stake it properly before it needs it.

When does bloom feed start? Within a week of the first pistils. The 23/77 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 9-11 weeks of bloom completely; outdoors the plant gets light no lamp matches and can reach Up to 650 gr, and pays for it in rain. Flowering: 9-11 weeks. Indoor yield: Up to 550g/m². Outdoor yield: Up to 650 gr. Plant height: Medium. Rated medium difficulty.

Flavour, aroma and effect

Chem Valley Kush arrives in order. The first draw at 20% THC gives resin and green wood, clean rather than sweet. The euphoric, creative, calm 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. 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. Pinene anchors it, limonene holds the middle, and caryophyllene 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 Chem Valley 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 medium, 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
🧘Calm
60% of people reported feeling Calm
😊Happy
51% of people reported feeling Happy
🤑Energetic
44% of people reported feeling Energetic
😎Uplifted
38% of people reported feeling Uplifted
🧠Focused
35% of people reported feeling Focused
🗣️Talkative
23% of people reported feeling Talkative
💪Motivated
24% of people reported feeling Motivated

Best For

✦ Daytime
✦ Creative Projects
✦ Social Activities

Strain Type

Indica 23%Sativa 77%

Strain Data Sheet

🧬THC20% - 23% (High)
🌿LineageChem D × SFV OG Kush
🔬TypeFeminised Sativa
🌡ClimateWarm / Mediterranean, long season
📅HarvestSept – Nov, S. hemisphere (typical)
📏HeightMedium
⚖️YieldHigh
🏠Yield IndoorUp to 550g/m²
🌳Yield OutdoorUp to 650 gr
⏱Flowering Time9-11 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.
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Chem Valley Kush Feminised
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🛡️Aluminium interior lining
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Chem Valley 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
Backcross Stabilisation (BX3) — clone-to-seed restoration
Stabilisation Notes — What This Means for Your Grow

Three rounds of backcrossing to the parental line have welded the Chem Valley Kush cut into the population. The controlled stretch that made the original mother famous now expresses across the whole pack — not just in one or two lucky phenos.

Breeding Goal

Reproduce the original Chem Valley Kush mother in pack-to-pack seed stock.

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
15 September 2026· 99%+ germination