Fullgas! is a sativa-dominant cannabis seed from Greenhouse Seeds that crosses Exodus Cheese with Sherbert OG to produce a fast-flowering, high-yielding plant with THC levels around 28%. If you've been looking for a strain that races through flowering without compromising on bud weight or flavour, this is the one we'd put in the tent.
Why Fullgas! deserves a slot in your grow
This is one of the more grower-friendly releases Greenhouse have put out in recent years. Fullgas! finishes indoors in 8–9 weeks, hits roughly 170cm in height, and pushes 600g/m² indoors or up to 800g/plant outdoors with a late-September harvest. The structure is clean — no weird phenos hiding in the pack — and the vigour means she powers through basic feeding schedules without throwing tantrums.
The parents do a lot of the talking here. Exodus Cheese brings that unmistakable fermented, funky cheese profile that UK growers have been chasing since the '90s. Sherbert OG adds a resinous backbone and rounds the edges with a touch of wood and gas. You end up with buds that stink out a drying tent properly — sensory warning: neighbours will notice without a carbon filter.
At around 28% THC, Fullgas! sits near the top end of what Greenhouse currently offers. The high itself leans uplifting and mentally buoyant at first, then settles into a body-relaxing glow — not couch-lock, but enough to loosen a tight back after a long day.
Which pack size should you pick?
Fullgas! ships as feminised seeds in three pack sizes. Pick based on how much tent space you're filling and whether you want room to pheno-hunt.
| Pack | Best for |
|---|---|
| 3 seeds (CSGH0281) | First-time trial in a 60x60 or 80x80. Enough to see what she does without overcommitting. |
| 5 seeds (CSGH0282) | The sweet spot. Fills a 100x100 nicely with room to pick the best pheno for cloning. |
| 10 seeds (CSGH0283) | Serious growers running back-to-back cycles or larger outdoor plots. Best value per seed. |
Fullgas! strain specifications
Here's the technical data sheet from Greenhouse Seeds, all in one place.
| Breeder | Greenhouse Seeds |
| Genetics | Exodus Cheese x Sherbert OG |
| Type | Feminised, photoperiod |
| Sativa/Indica | Sativa-dominant |
| THC | ~28% |
| Flowering time | 8–9 weeks indoors |
| Harvest outdoors | Late September |
| Height | ~170cm |
| Yield indoor | 600g/m² |
| Yield outdoor | Up to 800g/plant |
| Flavour profile | Cheese, wood, gas |
| Effect profile | Uplifting, relaxing, physically easing |
How to grow Fullgas! indoors and out
Fullgas! rewards basic, consistent care more than fancy techniques. She's vigorous enough to handle a light topping or LST session, but you don't need to SCROG her to hit the yield numbers.
- Germinate using the paper towel method or straight into a lightly moist starter plug. Expect tap roots within 2–4 days.
- Veg for 3–5 weeks in an 80x80 or larger. Given she stretches to ~170cm, give her less veg time in shorter tents.
- Flip to 12/12 and expect a stretch of roughly 1.5x during the first three weeks of flowering.
- Feed moderate nitrogen in veg, switch to a bloom-heavy schedule once stretch slows. She's not a heavy feeder — go lighter than you think.
- Run a carbon filter from week 3 of flowering onwards. The cheese genetics don't hide.
- Harvest at 8–9 weeks indoors when trichomes are mostly cloudy with a few amber. Outdoors, aim for the last week of September.
- Dry slow at 18–20°C and 55–60% humidity for 10–14 days, then cure in jars for at least 3 weeks. The cheese notes deepen significantly with proper cure.
Pairs well with a carbon filter and inline fan setup — the Exodus Cheese lineage is properly pungent from mid-flower onwards. For drying and curing, grab a set of quality glass jars and a hygrometer to nail that 62% RH sweet spot.
Frequently Asked Questions
What is the Fullgas! strain?
Fullgas! is a sativa-dominant feminised cannabis seed from Greenhouse Seeds, bred from Exodus Cheese crossed with Sherbert OG. It produces plants with roughly 28% THC, an 8–9 week flowering time, and cheese-forward flavours with wood and gas undertones.
How long does Fullgas! take to flower?
8–9 weeks indoors under 12/12. Outdoors she finishes in late September across most of Europe. Don't rush the harvest — trichomes should read mostly cloudy with some amber before chop.
Is Fullgas! suitable for beginners?
Yes. Greenhouse Seeds classify her as an accessible grow, and we agree. She's vigorous, forgiving of minor feeding mistakes, and has a clean structure. The main beginner pitfall is underestimating her height — plan for ~170cm.
What does Fullgas! taste like?
Robust fermented cheese on the inhale, followed by wood and a light gas note on the exhale. The cheese character intensifies with a proper 3+ week cure. Exodus Cheese fans will recognise the lineage immediately.
How much does Fullgas! yield?
Up to 600g/m² indoors under decent lighting and up to 800g per plant outdoors in a sunny spot. Hitting the higher end requires proper feeding, adequate pot size (minimum 20L outdoors), and some basic training.
What are the effects of Fullgas!?
Uplifting and mentally energising at first, followed by a relaxing body settle. At ~28% THC she's potent, so experienced users will feel at home. Start with a small amount if you're new to high-THC sativas.
Last updated: April 2026
