Author: Pyramid Seeds • Team ⏱ Reading time: 7 minutes | Updated: June 2026
New to growing? Go autoflowering. Short outdoor season? Autoflowering or fast version. Breeding or pheno-hunting? Regular. Want the shortest possible time to harvest indoors or out? Fast version. If none of that fits your situation exactly, the scenarios below go into more detail.
Feminized, regular, autoflowering, fast version — if you have read our overview of cannabis seed types, you already know what separates them. This guide skips the theory and gets straight to the practical question: given your specific situation, which one should you actually buy? Below are four common scenarios, a side-by-side table, and a final verdict for each.
Side-by-Side: Feminized vs Regular vs Autoflowering vs Fast
The full picture in one table — use this to sanity-check whichever scenario applies to you.
| Type | Sex of Plants | Photoperiod or Auto | Time to Harvest | Difficulty | Best For |
|---|---|---|---|---|---|
| Feminized | Female only (99%+) | Photoperiod | 13–20 weeks | Beginner–Intermediate | Maximum yield, full control over timing |
| Regular | ~50% female / 50% male | Photoperiod | 13–20 weeks | Intermediate–Advanced | Breeding, pheno-hunting, preserving genetics |
| Autoflowering | Female only (typically feminised) | Automatic (age-based) | 10–13 weeks | Beginner-friendly | Simplicity, speed, small spaces, short seasons |
| Fast Version | Female only | Photoperiod (shortened cycle) | 2–3 weeks faster than standard fem | Beginner–Intermediate | Fastest finish while keeping photoperiod control |
Scenario: I'm a Complete Beginner
No grow experience, no light-cycle management, just a straightforward first harvest.
If this is your first grow, autoflowering seeds are the clear answer. You don't need to flip a light schedule or track when summer days start shortening — the plant flowers on its own internal clock, usually 70–90 days from germination. There is no sexing to worry about either, since the vast majority of autoflowering seeds on the market today are also feminised.
The trade-off is mostly about yield ceiling and forgiveness window: autos are smaller plants and mistakes during the early weeks can't be corrected by simply extending the vegetative stage the way they can with a photoperiod plant. For a first-time grower, though, the simplicity outweighs that limitation by a wide margin.
The easiest entry point into growing — no light schedule to manage, harvest in roughly two and a half months.
Scenario: I'm Growing Outdoors with a Short Season
Cold autumns, unpredictable rain, or a warm window that closes early — speed matters more than anything else.
For outdoor growers in Northern Europe, the UK, or anywhere the warm season is short, the race is against the weather, not against yield. Two types of seed solve this problem from different angles.
Autoflowering seeds are the safer bet if your season is genuinely tight — they can complete their entire life cycle in around 10–13 weeks and can even be sown later than photoperiod plants, since they don't depend on day length to start flowering. Fast version seeds are the better choice if you want a bigger plant and a higher yield ceiling but still need to beat the first frosts — they stay photoperiod (so they need the natural shortening of days to trigger flowering) but finish their flowering stage 2–3 weeks earlier than a standard feminized strain.
As a rule of thumb: if your warm season is under four months, lean autoflowering. If you have four to five months and want more size and yield, fast version is worth the slightly longer wait.
The most reliable choice for short or unpredictable outdoor seasons.
Bigger plants, higher yield ceiling, and still finished before the cold sets in.
Scenario: I Want to Breed or Preserve Genetics
Creating new crosses, running a pheno-hunt, or keeping a classic line alive.
This is the one scenario where feminized, autoflowering, and fast version are all off the table — none of them reliably produce male plants, and breeding requires both sexes. Regular seeds are the only option: roughly half your seeds will grow into males, giving you pollen to work with, and the other half into females you can select from.
Regular seeds are also the standard starting point for pheno-hunting — growing out a larger batch and selecting the single best-performing phenotype to keep as a mother plant for future clones. If you're working with heirloom or classic genetics specifically, regular seeds are typically the only form those lines are available in.
The foundation for breeding projects, pheno-hunting, and classic strain preservation.
Scenario: I Want the Fastest Possible Harvest
Speed is the only priority — indoors or out.
If pure speed from seed to harvest is the goal, autoflowering and fast version solve it in different ways, and the right pick depends on your setup. Indoors, autoflowering seeds are usually the fastest overall — no need to switch the light cycle, and the full cycle from germination to harvest can land around 10–13 weeks under a steady 18–20 hour light schedule.
Fast version seeds are the better fit if you're growing photoperiod plants anyway and want to shave time off without changing your setup — they finish their flowering stage roughly 2–3 weeks faster than a standard feminized version of the same genetics, while still giving you full control over when flowering starts.
If your indoor space and light setup are flexible, autoflowering will usually get you to harvest fastest in absolute terms. If you're committed to a photoperiod grow — for the larger yield ceiling, or because you're running a perpetual harvest with staggered light cycles — fast version is the speed upgrade within that system.
The speed advantage of autoflowers with the full control of a photoperiod plant.
Verdict
If you only remember one line from this guide, make it this one.
- New to growing: autoflowering — simplest path to a finished harvest.
- Short or unpredictable outdoor season: autoflowering for safety, fast version for size.
- Breeding or preserving genetics: regular — the only type that gives you both sexes.
- Fastest possible harvest: autoflowering indoors, fast version if you need to stay photoperiod.
Still weighing it up? Our full guide to cannabis seed types covers the underlying differences between feminized, regular, autoflowering, and fast version seeds in more depth.
Autoflowering seeds are generally the best choice for beginners. They flower automatically based on age rather than light schedule, so there is no light-cycle management required, and most are also feminised, removing the need to identify and remove male plants. The full cycle from seed to harvest typically takes 70–90 days, making them a forgiving and fast first grow.
No. Fast version seeds are feminized photoperiod plants — they still need a change in light schedule, or the natural shortening of days outdoors, to begin flowering, exactly like a standard feminized seed. Autoflowering seeds flower automatically based on the plant's age, regardless of light schedule. The two are often confused because both finish relatively quickly, but the underlying mechanism is completely different.
Regular seeds are the only suitable choice for breeding. Feminized, autoflowering, and fast version seeds are all bred to produce female plants almost exclusively, which removes the male plants needed to create pollen for new crosses. Regular seeds produce roughly half male and half female plants, giving breeders both sexes to work with — essential for creating new strains, pheno-hunting, or preserving existing genetic lines.
Comments (0)
New comment