
Blue Haze Auto
Blue Haze Auto cannabis seeds for UK growers. Indica · 20% THC · focused, happy, relaxed. Discreet UK delivery, priced in GBP.
Royal King Genetics — first-party test batch
Figures below are from our internal seed-lot QC and verified UK grower submissions, not breeder marketing. Determined from a single batch tested 2026-09-08 on 225 seeds.
About Blue Haze Auto
Cured properly and opened cold, Blue Haze leads with myrcene: a heavy damp-earth note with something sweet and overripe sitting behind it. Underneath it caryophyllene adds a dry peppery floor, and it reads mid-palate rather than on the first pass. This 80/20 indica tests at 20% THC, but potency is the least interesting number here: what separates Blue Haze from the others on the same shelf is how the aroma behaves across a cure, and that is a question of storage and patience rather than genetics alone.
Growing it for the nose rather than the scales
Chasing terpene expression in Blue Haze pulls against chasing yield, and it is worth knowing which one you are doing before you start. The Myrcene/Caryophyllene/Linalool profile does its best work in living soil, where the microbial side produces secondary compounds a bottle cannot. That is easier here than it sounds: decent peat-free compost and worm castings are a garden centre purchase in most British towns.
Through the 55-65 days of bloom, stop foliar spraying after week two — anything landing on developing trichomes is still there at harvest and you will taste it. The final three weeks decide which terpenes dominate the cured flower: nights held at 16-18°C push myrcene forward, while a warmer finish protects the lighter linalool notes at the top.
The cure is where most of the flavour is lost in this country, and the reason is the weather. A 10-14 day hang wants 15-18°C at 55-60% relative humidity, which a British autumn will not give you in a spare room — a temperature-controlled cupboard or a wine fridge set to 16°C solves it for the price of one wasted harvest. Then into glass, burped twice a day for the first fortnight. The caryophyllene layer that makes this one worth growing does not appear until somewhere between weeks three and four in the jar.
Flowering: 55-65 days. Indoor yield: up to 500 g/m2. Outdoor yield: up to 400 g/plant. Rated intermediate difficulty.
Flavour, aroma and effect
Blue Haze arrives in stages. The first draw at 20% THC brings a musky earthiness that coats rather than cuts. The focused, happy, relaxed character follows within minutes, starting as weight behind the eyes and working down through the shoulders and chest. By about a quarter of an hour it has become a physical stillness — not sedation so much as a strong disinclination to get up. Two to three hours at a moderate dose. The caryophyllene underneath adds a warmth that keeps the whole thing anchored.
Terpene breakdown
Primary: Myrcene · Secondary: Caryophyllene · Tertiary: Linalool. This combination turns up often in cultivars that win things, and it is usually the one growers comment on when a jar is opened for the first time after curing. Myrcene anchors the aroma, caryophyllene occupies the middle, and linalool sits behind both — which is the part that separates this strain from others sharing its primary terpene.
Who it suits
Who does well with Blue Haze? Balcony growers in flats from Brighton to Glasgow. Anyone wanting one quick outdoor crop rather than a long project. Indoor growers short of headroom. The autoflowering genetics run on their own clock, so there is no light schedule to manage, no anxiety about light leaks, and harvest comes 10-12 weeks from germination whatever the season is doing. Difficulty is rated intermediate, which means a moderate learning curve that rewards attention without demanding a laboratory.
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Blue Haze Auto — Breeder Information
Royal King GeneticsBred 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.
Blue Haze is an autoflowering line that has been progressed through five rounds of Royal King Genetics autoflower stabilisation. The autoflower trait is recessive — fixing it takes multi-generation work — and at F5 the auto trigger and finish window are welded across the pack.
Stabilise the recessive ruderalis trait in Blue Haze for uniform auto-trigger.
Chosen for purple/dark expression where it shows, dense bud structure and a true indica relaxation profile.
Royal King Genetics elite-cut archive — pollen from a maintained S1 line of the original elite mother.