Purple Octane is Seed Junky Genetics' Biscotti crossed with Sherb BX1, then run into Jealousy F2 — the grape-and-gas branch of the same breeding run that produced Permanent Marker. Deep purple flower, an aggressive fuel lead over ripe grape, and an arc that opens euphoric and lands heavy. It is also the easier one of the pair to actually find.
Where It Comes From
Seed Junky's JBeezy ran that population and pulled more than one keeper out of it. Permanent Marker is the famous one. Purple Octane is the sibling that came out prettier in purple with a stronger grape and gas character, and it reached shelves in volume while the award winner stayed scarce.
Two more named selections came from the same cross. Adios MF is a phenotype of Purple Octane on the identical lineage, skewing skunkier and more mint-forward. Gunnpowwder is a third pull, selected by Berner for the Cookies-affiliated Minntz brand and carrying the same bag appeal with a turpentine edge.
One seed population, four commercial identities. It is a useful reminder that a strain name usually labels a selection somebody kept, not a fixed genotype — and that two jars with different names can be closer relatives than two jars carrying the same one.
The Cross
Seed Junky Genetics gets breeder credit, and the genetics read Biscotti crossed with Sherb BX1, then crossed onto Jealousy F2. Biscotti is commonly traced to Gelato #25 with a South Florida OG, bringing dense dessert structure, earth and dark coloring. Sherb BX1 is a backcross into the Sherbert side, reinforcing cream and sugar.
Jealousy pushes the candy-and-fuel character further, and the F2 generation opens the population up to real variation between siblings. That is why the four selections above all read differently while sharing a family tree. An F2 scatters, and a breeder's job is deciding which part of the scatter deserves a name.
Fuel leads on the finished plant. Grape and diesel come up over and over, with something close to grape soda soaked in solvent when a jar is running well. The sweetness never erases the gas, it darkens it. Visually it earns the name: deep purple on compact, heavily resinous flower.
Cold finishing weather deepens that pigment, but purple is not a quality standard and never has been. Cure and storage decide whether the grape stays distinct or collapses into flat gas, which is the whole difference between a memorable jar and an expensive one.
What It Left Behind
Purple Octane's standing comes from the company it keeps — a breeding run that produced one of the most talked-about cultivars of the decade — and from availability, which is not nothing.
Plenty of people met this profile through Purple Octane because the more famous sibling was never on the shelf when they were looking. A plant that shows up is worth more to a buyer than one that only exists in photos, and that has quietly done more for its reputation than any placement would have.
The High Rise Take
Seed Junky's grape-forward pull from the Permanent Marker cross: purple, gassy, euphoric into heavy, and it settles sleepy and relaxed at the back end. Treat it as an evening jar. Start with Biscotti if you want to hear where the dessert structure underneath it comes from.