Gelato 33 Fast
Cannabis seeds
by Advanced Seeds
Gelato 33 Fast Cannabis Seeds by Advanced Seeds
Gelato 33 Fast is a feminised photoperiod cannabis seed that delivers authentic Gelato genetics — the Sunset Sherbet x Thin Mint GSC cross — with a flowering time of just 55 days. Advanced Seeds bred this one for growers who want that famous resin-caked, dessert-scented bud without spending 9-10 weeks waiting for it. Compact indoors (80-110cm), stretchy outdoors (up to 240cm), and capable of pulling 500-550g/m² under lights. If Leafly called Gelato "the best strain ever" in 2021, this fast-flowering version is the shortcut to growing it yourself.
Pack Size
Gelato 33 Fast is available in a pack of 3 feminised seeds. Every seed is female — no sexing required, no wasted tent space on males.
Why Gelato 33 Fast Seeds Deserve a Spot in Your Grow Room
We've seen plenty of "fast" versions of popular strains come through over the years, and honestly, some of them sacrifice too much in the process — diluted terpene profiles, lower resin production, or that vague "it's almost like the original but not quite" feeling. Gelato 33 Fast by Advanced Seeds doesn't fall into that trap. The genetics are solid: Sunset Sherbet brings a complex, sweet-and-sour aroma with a strong body component, while Thin Mint GSC layers in that minty, cookie-dough funk and a more cerebral edge. Both parents descend directly from Girl Scout Cookies, so the lineage is tight and well-documented.
The real selling point is what happens in the grow room. At 55 days of flower, you're shaving a full 1-2 weeks off what most Gelato cuts need. That's not just a convenience thing — it's a practical advantage. Shorter flowering means less time for mould, pests, or environmental problems to ruin a run. It means lower electricity costs. And if you're running multiple cycles per year, you can squeeze in an extra harvest. The plant itself stays manageable at 80-110cm indoors, which makes it a strong pick for anyone working in a small tent or a converted wardrobe.
One honest note: like most Gelato phenotypes, this one develops a dense canopy. If you don't open it up with some light stress training (LST) and selective defoliation, the lower bud sites will get shaded out and you'll end up with popcorn buds instead of the chunky colas this strain is capable of producing. It's not a difficult plant by any means, but it does reward a bit of hands-on attention.
Gelato 33 Fast Growing Specifications
| Specification | Detail |
|---|---|
| Seed Bank | Advanced Seeds |
| Seed Type | Feminised Photoperiod |
| Genetics | Sunset Sherbet x Thin Mint GSC |
| Flowering Time | 55 days |
| Indoor Height | 80-110cm |
| Outdoor Height | Up to 240cm |
| Indoor Yield | 500-550g/m² |
| Seeds per Pack | 3 |
| SKU | CSAD0049 |
Gelato 33 Fast Genetics: What Sunset Sherbet and Thin Mint GSC Bring to the Table
Understanding the parents tells you a lot about what to expect from Gelato 33 Fast seeds. Sunset Sherbet is a GSC descendant crossed with Pink Panties — it's the side of the family responsible for the sweet, fruity, almost sherbet-like aroma and the heavy physical relaxation. If you've ever grown or smoked Sunset Sherbet, you'll recognise that dense, frosty bud structure and the way the trichomes practically drip off the calyxes.
Thin Mint GSC is the other parent, and it brings a distinctly different character. Where Sunset Sherbet leans into the body, Thin Mint GSC delivers a more cerebral onset — almost rushing — before settling into full-body calm. The flavour profile adds a minty, earthy, slightly spicy layer that balances out the sweetness of the Sherbet side. Both parents are direct Girl Scout Cookies descendants, which means Gelato 33 Fast carries double the GSC influence. That shows up in the resin production: expect buds that are absolutely caked in trichomes by harvest day.
The "Fast" element in the name comes from Advanced Seeds' breeding programme that selects for accelerated flowering without sacrificing the cannabinoid and terpene profile. The result is a 55-day bloom cycle that still produces the same aromatic complexity and potency you'd expect from a full-term Gelato cut. We'd compare it favourably to Royal Queen Seeds' Gelato or Barney's Farm Gelato — similar quality, noticeably quicker turnaround.
How to Grow Gelato 33 Fast Cannabis Seeds
- Germination: Use the paper towel method or soak seeds directly in a glass of water for 12-24 hours until taproots emerge. Plant taproot-down into pre-moistened seedling soil or a jiffy pellet at roughly 1cm depth. Keep the environment warm — 22-25°C — and humid.
- Vegetative phase: Once seedlings have 3-4 nodes, consider your first topping session. Cut above the 3rd or 4th node to encourage lateral branching. Gelato 33 Fast responds well to 1-2 toppings during veg. Keep your light cycle at 18/6.
- Training: Start low-stress training (LST) once branches are long enough to tie down. Bend and secure the main branches outward to open up the canopy. This is critical with Gelato 33 Fast because the plant naturally develops dense foliage that blocks light to lower bud sites.
- Defoliation: Remove large fan leaves that shade bud sites, particularly in weeks 2-3 of flower. Don't strip the plant bare — just clear the canopy enough for light and airflow to reach the lower branches. A second light defoliation around week 5 of flower can help with air circulation and reduce mould risk.
- Flowering: Flip to 12/12 when the canopy fills roughly 70-80% of your available space. Gelato 33 Fast will finish in approximately 55 days from the switch. Watch for the trichomes to shift from clear to milky with a few amber heads — that's your harvest window.
- Outdoor growing: Plant out after the last frost. In large pots (50L+) or directly in the ground, Gelato 33 Fast can reach 240cm and produce heavy harvests. The fast flowering time makes it a good option for growers in northern climates where autumn rains arrive early.
- Drying and curing: Hang whole branches in a dark room at 18-20°C and 55-60% humidity for 10-14 days. Once stems snap rather than bend, trim and jar the buds. Burp jars daily for the first week, then every few days for 2-4 weeks. The Gelato terpene profile really opens up after a proper cure — rush this step and you'll miss half the flavour.
Aroma, Flavour, and What to Expect from Gelato 33 Fast
The smell hits you during the last two weeks of flower — a thick, sweet, almost creamy scent with sharp citrus undertones and a hint of earthiness that sticks to your fingers after handling the buds. Once dried and cured, the flavour leans into that dessert-like sweetness: think vanilla wafer with a lemon zest finish and a slightly doughy, biscuit-like base. It's the kind of strain that fills a room when you open the jar, so factor in a carbon filter if discretion matters.
In terms of effects, Gelato 33 Fast combines the best of both parents. Expect an initial uplift — a bright, clear-headed onset that settles into a warm, relaxing body feel. The resin production on this strain is genuinely impressive; buds come out looking like they've been rolled in sugar. If you're growing for extracts or concentrates, the trichome density makes Gelato 33 Fast an excellent candidate for dry sifting or bubble hash.
Complete your setup: If you're growing Gelato 33 Fast indoors, pair these seeds with a complete grow tent kit — tent, light, ventilation, and carbon filter sorted in one go. For training, a set of plant clips and soft garden wire makes LST far less fiddly. And if you're planning to process those trichome-heavy buds into hash, have a look at our bubble bag sets.
Gelato 33 Fast vs. Other Gelato Seeds
| Feature | Gelato 33 Fast (Advanced Seeds) | Standard Gelato Cuts |
|---|---|---|
| Flowering Time | 55 days | 65-75 days |
| Indoor Height | 80-110cm | 90-150cm |
| Indoor Yield | 500-550g/m² | 450-600g/m² |
| Outdoor Height | Up to 240cm | Up to 250cm |
| Resin Production | Very high | Very high |
| Genetics | Sunset Sherbet x Thin Mint GSC | Varies by breeder |
| Extra Cycles per Year | Yes — 10-20 days saved per run | No |
The main advantage of Gelato 33 Fast is straightforward: you save 10-20 days per flowering cycle without a noticeable drop in quality. Over the course of a year, that's potentially one extra full harvest. If you're growing in a region with a short outdoor season, those extra days of margin before autumn weather sets in can be the difference between a successful harvest and mouldy buds.
Frequently Asked Questions
How long does Gelato 33 Fast take from seed to harvest?
Expect roughly 3-4 weeks of seedling/veg time plus 55 days of flowering. Total seed-to-harvest is around 10-12 weeks depending on how long you veg. Shorter veg means smaller plants but a faster turnaround.
Is Gelato 33 Fast suitable for beginners?
Yes — the compact size (80-110cm indoors) and short flowering time make it forgiving. The one thing to watch is the dense canopy: you'll want to do some basic defoliation and LST to get the best yields. Nothing complicated, but don't just leave it untouched.
What yield can I expect from Gelato 33 Fast indoors?
Advanced Seeds rates indoor yield at 500-550g/m². That's achievable with proper lighting (400W+ HPS or equivalent LED), 1-2 topping sessions, and good canopy management. Without training, expect closer to 350-400g/m².
Does Gelato 33 Fast smell strongly during flowering?
Very much so. The sweet, creamy, citrus aroma is intense from about week 5 of flower onwards. A carbon filter is strongly recommended for indoor grows — without one, the smell will travel well beyond your grow space.
Can I grow Gelato 33 Fast outdoors in northern Europe?
The 55-day flowering time makes it one of the better Gelato options for northern climates. If you flip naturally with the seasons, aim to have plants well-established by late June so flowering completes before October rains. The compact structure also handles wind better than taller sativa-leaning strains.
What's the difference between Gelato 33 Fast and regular Gelato seeds?
Same Sunset Sherbet x Thin Mint GSC genetics, but Gelato 33 Fast finishes flowering in 55 days versus 65-75 days for standard Gelato cuts. The aroma, resin production, and potency are comparable — you're saving time, not sacrificing quality.
How many times should I top Gelato 33 Fast?
One or two topping sessions during veg is the sweet spot. The first top above the 3rd or 4th node, and optionally a second top on the resulting branches once they've grown out a few nodes. More than two toppings can stress the plant and delay flowering.
Last updated: April 2026
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Medical disclaimer. This content is for informational purposes only and does not constitute medical advice. Consult a qualified healthcare provider before use of any substance.