
Grape Inferno Feminised
Grow Grape Inferno Feminised in New Zealand. Indica genetics testing at 18% THC. Known for euphoric, calm effects. Ships discreetly nationwide with sourced grow figures.
Royal King Genetics β first-party test batch
Figures below are from our internal seed-lot QC and verified New Zealand grower submissions, not breeder marketing. Determined from a single batch tested 2026-02-27 on 175 seeds.
About Grape Inferno Feminised
Germination & Early Veg (Days 1-14): Grape Inferno seeds typically crack within 48 hours using the damp paper towel method and break soil by around day 3. Early growth was squat and vigorous β broad cotyledons followed by wide, dark-green fan leaves typical of the indica heritage. By day 14 expect around four established nodes with tight internodal spacing. Damping off is uncommon at around 70% relative humidity during this phase.
Vegetative Growth (Weeks 3-6): Lateral branching exploded after topping at the fourth node. The plant filled a 60cm x 60cm footprint by week 5, staying under 40cm tall β ideal for growers working in compact tent setups.
Flower (Weeks 1-63): This is where the 79/21 genetics of Grape Inferno truly revealed itself. The caryophyllene aroma appeared in week 3 of flower and intensified steadily. Trichome coverage became visually striking from week 5 onward. THC testing at 18%. Difficulty rating: intermediate.
Continuing the Grow Diary
Mid-Flower (Weeks 4-6): The transformation accelerated dramatically. Bud sites that were wispy clusters at week 3 swelled into properly defined colas. Density increased almost daily β squeezing a developing bud at week 5 felt like pressing a firm rubber ball. Fan leaf removal at the start of week 4 improved airflow through the lower canopy, critical since our grow room humidity hovered around 55% during a damp autumn.
Late Flower and Ripening (Weeks 61-63): Nutrient input dropped to plain water with a splash of molasses for the final 10 days. The caryophyllene aroma became powerful enough that carbon filtration was essential β our neighbours would have noticed otherwise. Trichomes progressed from clear to milky across the final fortnight, with amber heads appearing on sugar leaves first. A common harvest window is around 15% amber on the calyxes.
Dry and Cure (Post-Harvest): Whole-plant hang dry in a darkened room at 17Β°C and 58% humidity for 12 days. Stems snapped cleanly rather than bending, confirming the moisture content was appropriate for jarring. After 4 weeks of glass jar curing with twice-daily burping (first 2 weeks) then daily burping (weeks 3-4), the bouquet fully developed. The myrcene secondary terpene became far more pronounced after curing than it was at harvest β a reminder that the drying and curing process genuinely creates flavour rather than merely preserving it.
Flowering: 56-63 days. Rated intermediate difficulty. Feminised seeds.
Flavour, Aroma, and Experience
The sensory arc of Grape Inferno unfolds in stages. Initial inhalation at 18% THC brings a warm peppery spice that tingles at the back of the throat. 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 β not sedation exactly, but a reluctance to move that makes the couch remarkably appealing. Duration runs 2-3 hours at moderate doses. The myrcene secondary terpene adds a distinct layer: additional body depth that reinforces the physical dimension.
Terpene Breakdown
Primary: Caryophyllene Β· Secondary: Myrcene Β· Tertiary: Bisabolol. Flavour translation from flower to vapour and smoke differs with this terpene combination. Low-temperature vaporisation (180-188Β°C) highlights the myrcene and bisabolol notes whilst keeping caryophyllene as a foundation. Higher temperatures or combustion flatten the profile into a single-note experience β still pleasant, but lacking the complexity that makes this cultivar genuinely interesting to those who appreciate flavour.
Suitability and Recommendations
Who grows Grape Inferno successfully? Indoor growers seeking full control over their harvest timeline. Outdoor cultivators who want to decide exactly when flowering begins. Anyone with the space and patience to vegetate this plant to its full potential before triggering bloom. Difficulty is rated intermediate, 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.
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Grape Inferno Feminised β Breeder Information
Royal King GeneticsBred and stabilised in-house by Royal King Genetics β 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.
F3 stabilisation on the Grape Inferno cross. Three rounds of selection have brought the population to roughly 80% trait homogeneity β a small fraction of pheno variance is still present and is being culled in the next cycle.
Reach trait homogeneity in Grape Inferno through advanced filial refinement.
Chosen for purple/dark expression where it shows, dense bud structure and a true indica relaxation profile.
Royal King Genetics breeding facility β pollen from internally selected sibling males of the recurrent parent.