China Yunnan Auto

Here is what China Yunnan delivers at harvest: 250 grams per square metre indoors, 250 grams per plant per plant outdoors in Irish conditions, with resin production peaking at 15% THC. Those numbers tell a story when you work backwards through the Approximately 8–9 Weeks window. The bulk of your final weight accumulates during weeks 5 through 8 — a period where the 65/35 genetics stack calyxes rapidly and trichome coverage shifts from scattered to frosted. Outdoor growers targeting an early-October harvest should count backwards from there, aiming for buds to enter this critical fattening stage through September while there is still usable light and before the wettest weeks arrive.

To reach the upper end of this strain's yield potential (250 grams indoors, 250 grams per plant outdoors), focus your efforts on three critical windows during the Approximately 8–9 Weeks period.

Window 1: The first 10 days after flowering begins. Stretch management determines canopy uniformity, which directly impacts light distribution and final yield. Expect modest stretch of 20-30% — a quick defoliation of lower fan leaves at day 7 redirects energy to developing bud sites.

Window 2: Weeks 3-5 of bloom. Myrcene terpene biosynthesis ramps up during this period. Maintain a day/night temperature differential of at least 6-8°C to encourage terpene accumulation. Outdoors in Ireland the sea keeps that swing narrow — a maritime climate has a smaller diurnal range than a continental one, and the midland counties away from the coast are the only places that reliably deliver it. Indoor cultivators should target 25-26°C during lights-on and 18-20°C during lights-off. Supplement with potassium-heavy bloom nutrients at EC 1.6-1.8.

Window 3: Final 10-14 days before harvest. Cease all nutrient input and flush with pH-adjusted water. Monitor trichomes daily with a 60x jeweller's loupe — harvest at 15-20% amber for the full-bodied effect this genetics is known for. Outdoor growers: this window typically falls through the second half of September.

Flowering: Approximately 8–9 Weeks. Indoor yield: 250 grams. Outdoor yield: 250 grams per plant. Plant height: 90-120 cm. Medium. Rated moderate difficulty.

The sensory arc of China Yunnan unfolds in stages. Initial inhalation at 15% THC brings a deep, musky earthiness that coats the palate. The euphoric, calm effects emerge within minutes, beginning as a pleasant heaviness behind the eyes that migrates downward through the shoulders, chest, and limbs. By the fifteen-minute mark, a deep physical stillness sets in — not sedation exactly, but a reluctance to move that makes the couch remarkably appealing. Duration runs 2-3 hours at moderate doses. The caryophyllene secondary terpene adds a distinct layer: a grounding warmth that prevents the experience from feeling unanchored.

Primary: Myrcene · Secondary: Caryophyllene · Tertiary: Linalool. This particular terpene trio appears frequently in award-winning cultivars and produces a nose that most growers find immediately appealing when jars are first opened after curing. The myrcene dominance anchors the aroma, caryophyllene provides mid-range character, and linalool contributes a subtle background note that distinguishes this strain from others sharing the same primary terpene.

Who grows China Yunnan successfully? Balcony and back-garden growers in Dublin, Cork and Galway. Rural cultivators wanting a crop that is finished and dry before the autumn weather closes in. Indoor growers with limited headroom in small tents. The autoflowering genetics run on their own internal clock — no light schedule adjustments, no stress about light leaks, and harvest arrives 10-12 weeks after germination regardless of the season. Difficulty is rated moderate, meaning a moderate learning curve that rewards attention without demanding laboratory-grade conditions. Delivered nationwide in discreet, unbranded packaging with sourced grow data on every strain page.