Harle-Tsu CBD cannabis seeds packaging — Royal King Seeds UK
Cbd
THC 30%
⚡ High Potency
CBDFeminisedIn Stock

Harle-Tsu CBD Feminised

Feminised PhotoperiodSee Lab Report →

Harle-Tsu CBD Feminised cannabis seeds for UK growers. Cbd · 30% THC · focused, calm. Discreet UK delivery, priced in GBP.

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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 2026-09-24 on 200 seeds.

Germination rate: 97.0% (n=200)
Last QC test date: 2026-09-24
Indoor yield: 384-510 g/m² (avg across 10 verified grower reports)
Outdoor yield: 414-632 g/plant (avg across 9 verified grower reports)

About Harle-Tsu CBD Feminised

Read Harle-Tsu CBD backwards from the harvest: 350-400 g/m2 under lights, 550-600 g/plant outdoors, with resin filling out towards 30% THC. Weight goes on evenly across the 8-9 weeks of bloom, with a clear surge in the last two weeks that rewards leaving the plant alone. The 47/53 split gives you calyx density and an even spread of resin rather than one at the cost of the other. Outdoors, late September to mid-October is the window that misses the wettest of the finish across most of the country while still letting the myrcene arrive.

Getting the weight out of this plant

Three stretches of the 8-9 weeks of bloom decide whether you reach the top of this strain's range (350-400 g/m2 indoors, 550-600 g/plant outdoors). The rest is maintenance.

The first ten days of flower. What the plant does during the stretch sets canopy height, and canopy height sets how evenly the light lands. Somewhere around a third is typical. One pass of low-stress training over the tallest shoots keeps the top flat.

Weeks three to five. Myrcene production climbs through here, and it responds to a day-night temperature gap of 6-8°C. British autumn nights hand that to outdoor growers for free from September; indoors you have to build it, at roughly 25-26°C lights-on and 18-20°C lights-off. Bloom feed goes potassium-heavy around EC 1.6-1.8.

The last ten to fourteen days. Stop feeding and run pH-corrected water. Check trichomes daily under a 60x loupe — cut at 10-15% amber for the middle of the range. Outdoors that lands between late September and mid-October across most of Britain, and the weather forecast should get a vote.

Flowering: 8-9 weeks. Indoor yield: 350-400 g/m2. Outdoor yield: 550-600 g/plant. Rated intermediate difficulty.

Flavour, aroma and effect

Harle-Tsu CBD arrives in stages. The first draw at 30% THC brings a musky earthiness that coats rather than cuts. The focused, calm character follows within minutes, as a head and body effect at once. The mind stays clear while the muscles let go by degrees, which is what makes it adaptable — a small dose carries an afternoon, a larger one turns into an evening. The bisabolol underneath adds a complementary note that fills out the middle.

Terpene breakdown

Primary: Myrcene · Secondary: Bisabolol · Tertiary: Linalool. These three build an aroma that keeps moving through the cure. Fresh off the dry it leads with myrcene; after three or four weeks sealed in glass at 16-18°C the linalool underneath comes up and the whole thing gains a layer. Vaporising between 180°C and 195°C catches the widest span of them, since the lighter linalool molecules are the first thing heat destroys.

Who it suits

Who does well with Harle-Tsu CBD? Indoor growers who want the timeline under their own control. Outdoor growers who want to choose when flowering starts. Anyone with the room and the patience to veg it properly before flipping. Difficulty is rated intermediate, which means a moderate learning curve that rewards attention without demanding a laboratory.

Effects

🧠Focused
76% of people reported feeling Focused
🧘Calm
67% of people reported feeling Calm
😌Relaxed
58% of people reported feeling Relaxed
🌿Stress Relief
47% of people reported feeling Stress Relief
💊Pain Relief
44% of people reported feeling Pain Relief
😊Happy
38% of people reported feeling Happy
😴Sleepy
38% of people reported feeling Sleepy
💆Body High
24% of people reported feeling Body High
✨Tingling
16% of people reported feeling Tingling

Strain Type

Indica 47%Sativa 53%

Strain Data Sheet

🧬THC30% - 35% (Very High)
🌿LineageHarlequin × Sour Tsunami
🔬TypeFeminised Cbd
🌡ClimateTemperate, adaptable
📅HarvestLate Sept – Oct, UK outdoor (typical)
📏Height100 – 160 cm (typical)
⚖️YieldMedium – High
🏠Yield Indoor350-400 g/m2
🌳Yield Outdoor550-600 g/plant
⏱Flowering Time8-9 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 must comply with all applicable United Kingdom legislation.
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Harle-Tsu CBD Feminised
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🛡️Aluminium interior lining
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🔢Scratchable serial number

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Harle-Tsu CBD 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
F4
Generations
4+
Breeding Programme
CBD-Stabilised Line (F4) — recessive cannabinoid fixing
Stabilisation Notes — What This Means for Your Grow

CBD-dominance does not stabilise in one or two generations. Harle-Tsu has been progressed through four cycles of selection at Royal King Genetics until the CBD:THC ratio expressed uniformly across the population.

Breeding Goal

Stabilise the CBD:THC ratio in Harle-Tsu for uniform pack expression.

Selection Focus

Chosen for CBD:THC ratio expression, low-THC consistency and a bud structure suited to medical production.

Pollen / Mother Source

Royal King Genetics breeding facility — pollen from internally selected sibling males of the recurrent parent.

Last Batch QC Verified
31 August 2026· 99%+ germination