Jet Puft

Jet Puft Cannabis Seeds by Compound Genetics

Jet Puft is a feminised cannabis hybrid from Compound Genetics that crosses Marshmallow OG #9 with The Menthol to produce flowers testing up to 27–30% THC. That kind of potency paired with a terpene profile this unusual — petrol, burnt rubber, and sweet marshmallow — makes it one of the more memorable strains we've come across in a while. If your palate is bored, this is the wake-up call.

This product is intended for adults aged 18 and over.

Why Jet Puft Feminised Seeds Stand Out

Compound Genetics built their reputation on flavour-forward breeding, and Jet Puft is a clear example of that approach. The parent strains — Marshmallow OG #9 and The Menthol — each bring something distinct to the table. Marshmallow OG contributes that soft, sweet, almost confectionery sweetness, while The Menthol injects a sharp, fuel-drenched edge with a cooling menthol undertone. The result is a terpene blend that genuinely catches you off guard: imagine cracking open a jar and getting hit with petrol fumes, a whiff of burnt tyres, and then — right at the back — a marshmallow sweetness that somehow ties it all together. There's even a faint ammonia sharpness in there. It shouldn't work, but it absolutely does.

We'd pick Jet Puft over a more conventional OG or Kush cross if you're the kind of grower who's already run a dozen strains and wants something that'll actually surprise you. If you prefer clean, fruity terps, this probably isn't your first choice — and that's fine. But for anyone chasing unusual flavour, this is a proper standout.

Jet Puft Grow Guide: What to Expect

Jet Puft feminised seeds grow well both indoors and outdoors, so you've got flexibility regardless of your setup. Indoor flowering takes approximately 9 weeks, which sits in a comfortable middle ground — not the fastest finisher, but you won't be waiting around either. Plants produce medium to high yields when given proper attention, and by harvest time you'll see dense green clusters threaded with orange pistils and a thick, glistening layer of trichomes.

One honest note: strains pushing 27–30% THC tend to be hungrier feeders. Keep your nutrient schedule dialled in, particularly during mid-to-late flower when resin production ramps up. Overfeeding is the more common mistake we see — start conservative and adjust upward. The resin coating on these buds is genuinely impressive, which also means humidity control during the final weeks of flowering is critical. Keep your RH below 50% in late flower to protect those sticky colas from mould.

Terpene Profile and Flavour: Petrol Meets Marshmallow

The flavour is where Jet Puft really earns its keep. After a careful dry and cure — and do take your time here, rushing the cure will flatten these complex terps — you're left with buds that smell like a petrol station crossed with a campfire treat. The initial inhale is heavy: fuel, rubber, something almost chemical. Then the exhale softens into that marshmallow sweetness, rounded out by a subtle ammonia bite that keeps things interesting. It's layered in a way that most strains simply aren't.

If you've smoked a lot of cookie crosses and fruit-forward hybrids, Jet Puft is a genuine palate reset. The terpene intensity is high enough that even experienced smokers tend to pause and pay attention. We'd recommend using a clean glass piece or a dry herb vaporiser set around 185–195°C to get the full spectrum of flavour — rolling papers can mask the subtler notes.

Potency and Effects: 27–30% THC Demands Respect

With THC levels reaching up to 30%, Jet Puft is not a casual smoke. This is the kind of strain where a single hit from a vaporiser can set the tone for your entire evening. The potency means you should genuinely pace yourself — take a hit, wait 10–15 minutes, and see where you land before going back for more. We've seen growers underestimate strains in this THC range and end up glued to the sofa wondering where the last two hours went.

The hybrid genetics mean you're getting influence from both sides of the spectrum. Expect a full-bodied effect that settles in quickly thanks to that high cannabinoid concentration. The watch-out here is straightforward: if you're newer to high-THC strains, Jet Puft can overwhelm. Start small. There's no rush.

How to Grow Jet Puft Feminised Seeds

1. Germinate your Jet Puft seeds using the paper towel method or directly in a starter plug. Keep temperatures between 22–26°C and maintain moisture without waterlogging.
2. Transplant seedlings into your chosen medium once taproots are 1–2 cm long. Jet Puft performs well in soil and coco coir alike.
3. Maintain 18/6 light during the vegetative phase. These plants respond well to low-stress training (LST) to open up the canopy and improve light penetration.
4. Switch to 12/12 light to trigger flowering. The 9-week flowering period begins from the flip — mark your calendar.
5. Monitor humidity closely from week 5 onward. The dense, resinous buds are susceptible to mould if RH climbs above 50%.
6. Harvest when trichomes show a mix of milky white and amber under magnification. Dry slowly in a dark room at 18–20°C with 55–60% RH for 10–14 days, then cure in glass jars for at least 2 weeks to develop the full terpene complexity.

Jet Puft vs Other Compound Genetics Strains

Compound Genetics has a solid catalogue of flavour-driven hybrids, but Jet Puft occupies a specific niche. Where strains like their Apples and Bananas lean into fruity, dessert-style profiles, Jet Puft goes the opposite direction — into industrial, fuel-soaked territory softened by that marshmallow backbone. If you want something sweet and approachable, Jet Puft isn't it. If you want something that makes you stop mid-exhale and think "what on earth was that?" — you're in the right place.