Master OG S1 feminized seeds produce an indica-dominant hybrid carrying THC levels measured between 27 and 30%, making this one of the more potent photoperiod strains in any serious collection. This strain is a selfed (S1) feminization of Master OG, preserving the original genetic expression in an all-female seed format with strong phenotypic consistency across a pack.
Genetics & Lineage
Master OG descends from two pillars of the OG family: Master Kush and OG Kush. Master Kush brings compact, resinous structure and deep sedative qualities rooted in Hindu Kush landrace genetics. OG Kush contributes the sharp citrus-fuel terpene signature and the cerebral front-end that prevents the high from flattening out entirely. The resulting hybrid leans heavily indica — roughly 80% indica, 20% sativa — and the S1 feminization means growers are working with seeds produced by reversing a female Master OG plant to pollinate itself, which preserves the original phenotype rather than introducing a second parent. Greenpoint Seeds selected this line for trichome density, terpene intensity, and yield structure.
Aroma, Flavour & Effects
The terpene profile is led by Myrcene, followed by Limonene and Caryophyllene. Myrcene establishes the dominant note — a thick, dank earthiness with hash undertones that becomes more pronounced as the cure develops. Limonene cuts through with sharp citrus brightness on the mid-note, while Caryophyllene adds a peppery, diesel finish that lingers on the exhale. On the palate, expect an earthy pine base with a citrus-fuel overlay; the smoke is dense and resinous rather than light or floral.
Effects onset within minutes and arrive in two stages. The first is a weighted mental calm that reduces anxiety without producing confusion or racing thoughts. The second, which settles in over 20 to 30 minutes, is a full-body relaxation consistent with high-Myrcene indica profiles. At 27 to 30% THC, portion control matters — this is not a strain suited to casual daytime use for most consumers. Evening and late-night sessions, stress relief, and appetite stimulation are its most practical applications.
Growing Profile
Master OG S1 feminized seeds perform well both indoors and outdoors in temperate or Mediterranean-style conditions. Indoors, flowering concludes in 63 to 70 days, with indoor yields ranging from 450 to 550 grams per square meter under optimized light and canopy management. Outdoors, harvest falls in early to mid-October, with per-plant yields reaching 500 grams under full sun in a long growing season.
Plant structure is classically indica — wide nodes, lateral branching, and a tendency toward dense, heavy colas that benefit from support during late flower. Low-stress training (LST) or a screen-of-green (SCROG) setup improves light penetration and evening out the canopy. Humidity management during the final two weeks of flower is important given the bud density; maintaining relative humidity below 45% reduces the risk of mold in tightly packed colas. Difficulty is rated intermediate — accessible to growers with one or two previous grows completed.
Who This Strain Is For
This strain suits home growers who prioritize potency and terpene-forward cured flower over novelty. Medical consumers seeking consistent, measurable sedation or pain relief will find the high THC content and Myrcene-dominant profile directly relevant. Cultivators comfortable with managing dense canopies and late-flower humidity will get the most from this genetics. A basic indoor tent setup or a warm outdoor season is sufficient — no highly specialized equipment is required.
Six feminized seeds per pack makes this a practical option for a dedicated run with room for phenotype selection across the full pack.
