Permanent Gas

Breeder: Seed Junky Genetics

Lineage & Genetics

Cross: Sour Diesel x Permanent Marker

Sour Diesel: Legendary sativa-dominant diesel strain known for energizing cerebral effects, sharp fuel aroma, and vigorous stretchy growth structure. A foundational building-block cultivar in East Coast cannabis genetics. Permanent Marker: Seed Junky Genetics three-way cross of Biscotti x Jealousy x Sherbert BX1. Leafly Strain of the Year 2023, tests 28–35% THC, known for its signature soapy 'permanent marker' chemical-candy aroma driven by caryophyllene, limonene, and linalool. Dense, frost-heavy buds with strong indica-leaning relaxation.

Terpene Profile

Aroma: Piercing sour diesel fuel on the open, with sweet grape-marker candy, chemical fruit undertones, and overripe berry funk. The jar crack hits like fuel vapor and grape bubblegum simultaneously. Heavier on gas than candy per Leafly reviewers, with a hearty dose of funk and zesty spice.

Flavor: Sharp diesel on the front that transitions into creamy sweetness and earthy pine. The spice comes forward mid-draw, then gassy notes return in full force with a chemical bite. Finish is sweet and floral with lingering fuel.

Effects & Experience

Onset: Instant cerebral lift with diesel clarity and energizing euphoria. Users report old-school sativa-style euphoric rush. Creative spark and uplifted mood within minutes.

Heavy eyelids and body relaxation set in around 30 minutes. Creative calm and functional focus persist. Strong euphoria melts into tranquil body relaxation by the one-hour mark. THCA testing at 31%+ batches produce noticeably sedating results.

Duration: Long-lasting — effects described as sustained and slow-building. The body relaxation phase extends well beyond the initial cerebral peak.

Growing Characteristics

Grow Tips: Run lower temps in weeks 7–9 to lock in color expression and terp retention. Topping and LST recommended to manage stretch and improve canopy balance. Keep RH below 50% in flower to prevent moisture trapping in dense, resinous buds. Do not harvest early — the Permanent Marker parent's signature chemical-candy terp note develops most fully in the final 10–14 days. Wait for predominantly cloudy trichomes with 10–20% amber. WASH DATA: Fresh-frozen wash yield 4.5–5.2%; dry-cured rosin return 20–22%; optimal press temp 115–120°F; best texture is wet batter or glossy cold-cure jam.

History & Origin

Bred by Seed Junky Genetics (JBeezy / Anthony Hart), Permanent Gas was released as a 2025 seed drop with feminized and regular seed packs. It represents Seed Junky's strategy of crossing their modern Cookies-family hits with proven old-school genetics — pairing their Leafly 2023 Strain of the Year Permanent Marker with the legendary Sour Diesel. The strain made Leafly's Hot Strains 2026 list. Lifted (Tacoma, WA) has been noted as an early commercial cultivator. CULTA in Maryland grows a separate version using Permanent Marker x Gassy Taffy genetics that shares the Permanent Gas name.