G13

G13 is one of cannabis culture's most legendary strains with an origin steeped in urban legend. The most persistent story claims it was secretly developed at a US government research facility at the University of Mississippi during the late 1960s and '70s, with a single cutting later smuggled out and passed along among trusted growers until it entered wider circulation. 

No verified pedigree has ever been released, so its exact parentage remains unknown, tracing back only to unspecified pure Afghani landrace genetics.

G13 Strain at a Glance

G13 is classified as either a 100% pure indica landrace selection or indica-dominant hybrid sitting closer to 70% indica and 30% sativa, largely because so many modern G13-branded cuts have been crossed and re-stabilized over the decades. THC levels commonly range from 20% to 28%. Its dominant terpenes include myrcene, caryophyllene, and limonene, contributing to an earthy, hash-like aroma layered with pungent skunk, berry, and a touch of citrus. Reported effects include a heavy, sedating body high paired with a brief, energizing initial lift. 

A Closer Look at G13 Strain

THC on G13 typically falls between 20% and 28%, a potent range that has helped cement its reputation. The plants themselves grow short, bushy, and compact with broad, dark green fan leaves and tight nodal spacing (hallmarks of Afghani landrace indica structure) and produce dense, resin-heavy buds valued for their yield.

Myrcene dominates the terpene profile, providing the earthy, musky base behind G13's heavy, sedating stone, while caryophyllene contributes peppery warmth and limonene brightens the finish with a subtle citrus lift that helps counterbalance the deeper hash-sweet notes. 

Many describe the effects as opening with a short burst of euphoric energy before giving way to a grounding, full-body calm that's made G13 a favorite anchor parent for hybrids like G13 Haze and G13 Skunk. How quickly and how heavily the effects will land depends on individual tolerance, dosage, and method of consumption.

Find your nearest dispensary location and check out our current G13 selection.