Jet Fuel is a sativa-dominant hybrid from 303 Seeds, the Colorado breeder behind Aspen OG, built by crossing an elite Aspen OG mother with a High Country Diesel male. It also sells as G6, Jet Fuel OG, Jet Fuel G6, Jet Fuel Kush and G6 Kush.
In 2020, High Times named Jet Fuel OG among its top strains of the year, alongside 303 Seeds' Jabberwocky.
An Aspen OG mother from BudPatch
The mother is an Aspen OG cut sourced from BudPatch, a cross of SFV OG and DNA Genetics' Sour Cream. 303 Seeds bred Aspen OG itself, and Leafly gives it a 4.3 rating across 15 reviews, with most reviewers reporting a focused, energetic and creative effect.
Leafly describes Aspen OG as sweet like Aspen in the summer and coated white like Aspen in the winter. Leafly reviewers call it a potent, classic OG, built for fans of older, dank varieties rather than modern exotics.
The SFV OG Kush in that mother also appears in Motorbreath, the Chemdog cross LIT Farms used to build Los Muertos. DNA Genetics, the Amsterdam company behind Sour Cream, took its own OG Kush work in another direction with Lemon OG.
High Country Diesel on the male side
High Country Diesel is 303 Seeds' diesel line, descended from New York Diesel and OG Kush. Seed sellers list the cross as Aspen OG × High Country Diesel F3, which places the diesel male in the third filial generation of that line.
That split shows up in the garden. Phenotypes vary between the Aspen and High Country sides, and the plants run pungent and stretchy. Seed sellers carry 303 Seeds' Jet Fuel in regular packs of 12 and feminized packs of 6, suited to both indoor and outdoor grows.
Nine to ten weeks and a heavy harvest
Jet Fuel flowers in 63–72 days indoors, or roughly 9–10 weeks. One grower catalog lists it at 70% sativa, with indoor yields of 450–550 g/m² and outdoor plants reaching 750–850 g each.
The plants reach medium height indoors and grow tall outside. Cannaconnection calls Jet Fuel high yielding, super resinous and very resilient, with vigorous growth and strong side branches that take well to training.
The same catalog describes conical buds with orange and red pistils under white trichomes. It recommends trimming broad fan leaves to push light and air to lower branches, and it flags temperature and humidity as the main things to manage. Plants need support late in flower, and the seed listing recommends some growing experience before taking it on.
How Jet Fuel tests and lands
Leafly lists Jet Fuel at 20% THC, with limonene as its dominant terpene, and gives it a 4.5 rating across 815 reviews. The grower catalog puts THC at 17–20% and adds beta-caryophyllene and beta-myrcene behind limonene.
Reviewers most often report feeling focused, energetic and uplifted. Leafly describes a high-energy jolt that later levels off into a dream-like, relaxed state, and many consumers treat it as a morning strain. The flavor leans toward diesel with a sharp chemical edge.