
Extreme OG Feminised
Extreme OG Feminised cannabis seeds for New Zealand growers. Indica strain Β· 27% THC Β· relaxed, sleepy, happy. Discreet packaging, nationwide delivery, 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 2026-03-09 on 500 seeds.
About Extreme OG Feminised
Here is what Extreme OG delivers at harvest: up to 350 g/m2 per square metre indoors, up to 400 g/plant per plant outdoors in New Zealand conditions, with resin production peaking at 27% THC. Those numbers tell a story when you work backwards through the 55-65 days window. The bulk of your final weight accumulates during weeks 5 through 8 β a period where the 70/30 genetics stack calyxes rapidly and trichome coverage shifts from scattered to frosted. Southern Hemisphere outdoor growers targeting a late-March harvest should calculate their flip date (or natural light trigger) accordingly, aiming for buds to enter this critical fattening stage during February when daylight hours are still generous.
Maximising Your Harvest
To reach the upper end of this strain's yield potential (up to 350 g/m2 indoors, up to 400 g/plant outdoors), focus your efforts on three critical windows during the 55-65 days 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% β a quick defoliation of lower fan leaves at day 7 redirects energy to developing bud sites.
Window 2: Weeks 3-5 of bloom. Caryophyllene terpene biosynthesis ramps up during this period. Maintain a day/night temperature differential of at least 6-8Β°C to encourage terpene accumulation β New Zealand autumn evenings (March-April) naturally provide this swing for outdoor growers. Indoor cultivators should target 25-26Β°C during lights-on and 18-20Β°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 β harvest at 15-20% amber for the full-bodied effect this genetics is known for. Southern Hemisphere outdoor growers: this window typically falls in late March through mid-April.
Flowering: 55-65 days. Indoor yield: up to 350 g/m2. Outdoor yield: up to 400 g/plant. Rated intermediate difficulty.
Flavour, Aroma, and Experience
The sensory arc of Extreme OG unfolds in stages. Initial inhalation at 27% THC brings a warm peppery spice that tingles at the back of the throat. The relaxed, sleepy, happy 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. Together these three compounds construct an aromatic signature that evolves throughout the curing process. Freshly dried flower leads with caryophyllene presence, but after three to four weeks in sealed glass jars at 16-18Β°C, the bisabolol undertone strengthens and the overall bouquet develops a layered complexity. Vaporisation between 180Β°C and 195Β°C captures the broadest spectrum of these terpenes β higher temperatures degrade the more volatile bisabolol molecules first.
Suitability and Recommendations
Who grows Extreme OG 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.
Effects
Best For
Strain Type
Strain Data Sheet
Packaging
Feminised Premium
Seeds
authenticity
lining
number
Related Strains

Night Nurse Feminised
Order Night Nurse Feminised seeds online. A quality indica cultivar at 20% THC delivering relaxed, sleepy, happy. Suited across the range of conditions found here. Fast shipping and guaranteed germination.

Animal Cookies Feminised
Animal Cookies Feminised β premium indica cannabis seeds suited to New Zealand growing conditions. 23% THC with euphoric, calm effects. Discreet delivery across New Zealand. sourced grow figuresd.

FPOG Feminised
FPOG Feminised β premium indica cannabis seeds suited to New Zealand growing conditions. 18% THC with relaxed, euphoric, creative effects. Discreet delivery across New Zealand. sourced grow figuresd.

Dark Side of the Moon Feminised
Order Dark Side of the Moon Feminised seeds online. A quality indica cultivar at 16% THC delivering focused, energetic, calm. Suited across the range of conditions found here. Fast shipping and guaranteed germination.
Extreme OG 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.
A recent-era clone-only original brought to seed via a three-generation backcross programme. Vigour, terpene character and tight finish window are all locked. The pack runs true to the cut your mate grew off a clone last season.
Reproduce the original Extreme OG mother in pack-to-pack seed stock.
Chosen for indica vigour, compact bud formation and a reliable finish window.
Royal King Genetics in-house mother stock β pollen taken from a sibling male drawn from the same selected pheno population.