Autoflowering seeds
by Azarius
Ice Cream Cake Auto is an indica-dominant autoflowering hybrid that crosses Wedding Cake and Gelato genetics with ruderalis to deliver 16–25% THC in a seed-to-harvest cycle of just 9–10 weeks. No light-schedule fiddling, no photoperiod stress — plant it, feed it, and chop it when the trichomes say so. The terpene profile runs spicy-sweet-sour, leaning into that dessert-counter aroma the parent strains are famous for. Effects tend towards social relaxation: chatty at first, then progressively heavier as the indica side settles in. If you want to buy autoflower seeds that combine dessert genetics with genuine ease of growing, this is a strong contender.
The right pack size depends on your tent footprint, your germination confidence, and how much margin for error you want. Here's the honest breakdown:
| Pack | Best For | Notes |
|---|---|---|
| 1 seed | Test run or mixed-strain tent | Good for trialling alongside other genetics. No backup if germination fails — and sometimes it does. |
| 3 seeds | Small tent (60x60 to 80x80 cm) | One spare in the pack. Solid if you trust your germination method already. |
| 5 seeds | First-time autoflower growers | Our most recommended pack. Room for germination variance, lets you pick the strongest seedlings without sweating a single dud. |
| 10 seeds | Full canopy or perpetual harvest | Best value per seed. Stagger starts by two weeks and you'll pull a fresh harvest every fortnight once the cycle rolls. |
If you've never grown autos before, we'd pick the 5-pack every time. It gives you enough plants to see real phenotype variation — some will stretch taller, some will stay squat and bushy — and you'll learn more from five plants than from one.
This autoflower stays compact enough for small tents but produces enough flower to justify a full run under a decent LED. Here are the hard numbers for planning your grow.
| Specification | Detail |
|---|---|
| Genetics | Wedding Cake x Gelato x Ruderalis |
| Type | Indica-dominant autoflower |
| THC | 16–25% |
| CBD | Low (below 1%) |
| Seed to Harvest | 9–10 weeks |
| Indoor Yield | 400–550 g/m² |
| Height | Compact to medium |
| Grow Difficulty | Beginner to intermediate |
| Flowering Type | Automatic (no light-cycle change needed) |
| Available Packs | 1, 3, 5, or 10 seeds |
That 400–550 g/m² indoor range assumes a proper light (200W+ LED for a square metre), decent airflow, and a feed schedule that doesn't drown the roots. On the lower end you'll land if you're running a small tent with minimal training. On the upper end, expect to have topped or LST'd your plants and dialled in your nutrients across at least one previous grow.
The dominant terpenes produce a spicy-sweet-sour profile that blends vanilla, peppery gas, and citrus. Crack a cured bud open and you'll get a wave of sweet vanilla and sugary dough — that's the Wedding Cake parent talking. Underneath there's a peppery, almost gassy spice from the Gelato side, plus a sour citrus edge that keeps it from being one-note sweet. In the jar it smells like a bakery next door to a fuel station, which sounds odd until you actually smell it.
On the inhale, the sweetness leads. On the exhale, the spice and sour notes come through more clearly. It's a genuinely complex smoke — the kind of flavour that makes you pause and pay attention rather than just puffing through a joint on autopilot. If you've grown Gelato or Wedding Cake photoperiods before, this auto version carries a recognisable family resemblance, though the ruderalis genetics can soften the intensity slightly compared to a 12-week photoperiod cut.
Autoflowers eliminate light-cycle management, the single biggest source of indoor growing mistakes. With a photoperiod strain, you need to flip from 18/6 to 12/12 to trigger flowering, and any light leaks during the dark period can stress plants into hermaphroditism. This auto flowers on its own internal clock regardless of light schedule. Run it at 20/4 from seed to harvest if you like — it doesn't care.
That said, here's the honest limitation: autos don't give you the same control over plant size that photoperiods do. You can't veg a photoperiod for 8 weeks to fill a massive canopy and then flip. An auto starts flowering when it decides to, typically around week 3–4. If you stunt it early with overwatering or transplant shock, you're stuck with a small plant — there's no recovery time. That's why we recommend starting in the final pot from day one. No transplanting, no root disturbance.
For growers running a perpetual harvest, autos are brilliant. Because they don't need a separate veg and flower room, you can stagger plants in the same tent. Start a new seed every two weeks and you'll have plants at every stage of life under the same light. With a 9–10 week cycle, that means a fresh harvest roughly every fortnight once you're rolling.
Successful cultivation requires starting in the final pot, maintaining a consistent 18–20 hour light schedule, and feeding conservatively in the first weeks. Follow these steps for the best results:
Running this auto in a small tent? Pair it with a complete grow kit that includes LED lighting, ventilation, and a carbon filter — everything you need to go from seed to harvest without sourcing parts individually. Check out our Cannabis Grow Kits category for matched setups. If you're already set up, a pH meter and a set of fabric pots will give these autos the root zone they prefer. Browse our Growing Accessories for individual components.
This strain sits between its two parent autos in terms of flavour complexity while matching or exceeding both on yield potential. Here's how it stacks up on paper. Bear in mind that actual results depend heavily on your setup and skill — these are breeder-stated ranges, not guarantees.
| Trait | This Strain | Gelato Auto | Wedding Cake Auto |
|---|---|---|---|
| THC Range | 16–25% | 21–26% | 20–25% |
| Seed to Harvest | 9–10 weeks | 9–10 weeks | 9–11 weeks |
| Indoor Yield | 400–550 g/m² | 400–500 g/m² | 400–500 g/m² |
| Dominant Type | Indica | Indica-hybrid | Indica-hybrid |
| Flavour Profile | Spicy-sweet-sour | Sweet-creamy-fruity | Sweet-earthy-vanilla |
This hybrid essentially gives you both parent strains' best qualities in one package. If you've already grown Gelato Auto and loved the flavour but wanted something with a bit more sour bite and heavier relaxation, this is the natural next step. If you're choosing your very first auto, the 5-seed pack is a strong starting point — the genetics are forgiving enough for beginners while still rewarding more experienced growers who push the training and feeding. You can also order Gelato Auto seeds or Wedding Cake Auto seeds separately if you want to run a side-by-side comparison in the same tent.
We've been selling cannabis seeds since the early days of the Amsterdam smartshop scene, and the autoflower category has changed dramatically. Ten years ago, autos meant sacrificing potency for convenience. That's not the case anymore. According to data tracked by the EMCDDA, average THC concentrations in European cannabis products have risen steadily over the past decade, and modern autoflower genetics have kept pace — this strain sitting at 16–25% THC puts it squarely in the range where photoperiod strains were not long ago. The gap has closed.
The one thing we still tell every first-time auto grower: don't overwater in the first week. Seedlings in a 15-litre pot look lonely surrounded by all that dry soil, and the instinct is to drench the whole pot. Resist it. Water in a small circle around the seedling — maybe 100–200 ml — and let the roots chase the moisture outward. We've seen more autos stunted by week-one overwatering than by any other single mistake. If you want to get the most out of these genetics, restraint in the early days pays off more than any expensive nutrient line.
For more background on autoflowering cannabis genetics and how ruderalis breeding works, our Cannabis Encyclopedia entry on autoflowers covers the science in detail. And if you're new to growing entirely, the Azarius blog has a beginner's guide to indoor cultivation that pairs well with these seeds.
The THC range of 16–25% overlaps significantly with photoperiod versions. Top-end phenotypes from well-dialled grows can match photoperiod potency. The lower end of the range typically comes from suboptimal conditions or early harvests rather than a genetic ceiling.
You can, but it's riskier than with photoperiods. If the plant recovers quickly, you'll get a bushier canopy and potentially higher yield. If it doesn't, you've lost your main cola with no extra veg time to compensate. LST (low-stress training) is the safer bet for most growers.
11–15 litre fabric pots are the sweet spot. Smaller pots restrict root growth and cap your yield; larger pots waste medium and make overwatering easier. Plant directly into the final pot — no transplanting with autos.
Outdoor yields depend heavily on climate and sunlight hours, but expect less than the 400–550 g/m² indoor figure. In a warm, sunny European summer with 15+ hours of daylight, individual plants can produce 50–150g each. Northern climates with shorter summers will land on the lower end.
Yes. The spicy-sweet terpene profile gets loud from about week 5 onward. A carbon filter is not optional if you're growing indoors and have neighbours. Without one, the scent carries through walls, doors, and duct tape.
18/6 or 20/4 from seed to harvest. Some growers run 24/0, but we've found the 4–6 hours of dark suits the plant's natural rhythm and keeps heat and electricity costs down without noticeably reducing yield.
Check trichomes with a jeweller's loupe from week 7. Mostly milky with 10–20% amber trichomes is the standard window. Don't rely on pistil colour alone — brown pistils can appear weeks before the plant is actually finished.
Last updated: April 2026
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.
