Types Of Seed
The three main types of cannabis seeds differ in how they flower, their sex, and how much control you have over the growing process.
| Feature | Feminized Photoperiod | Regular Photoperiod | Autoflower |
| Male/Female | Almost always female (99%+) | About 50% male, 50% female | Usually feminized, but regular versions exist |
| Flowering Trigger | 12 hours of uninterrupted darkness | 12 hours of uninterrupted darkness | Flowers automatically with age |
| Vegetative Stage | Grow as long as you keep 18–24 hours of light | Same | Fixed (typically 3–5 weeks) |
| Time to Harvest | 3.5–6 months depending on veg time | 3.5–6 months depending on veg time | 8–13 weeks from seed |
| Training | Excellent for all training methods | Excellent | Limited by short lifespan |
| Yield Potential | Very high | Very high | Moderate to high |
| Cloning | Excellent | Excellent | Not recommended |
| Best For | Most home growers | Breeders and seed production | Beginners or fast harvests |
1. Feminized Photoperiod Seeds
These are the most popular seeds for home cultivation.
Advantages
- Nearly every plant is female, so almost every seed produces buds.
- No need to identify and remove male plants.
- You control when flowering begins by changing the light schedule.
- Can be kept in the vegetative stage for weeks or months to grow larger plants.
- Ideal for cloning because clones remain in the vegetative stage until you switch lighting.
Disadvantages
- Takes longer than autoflowers.
- Requires light-tight conditions indoors to avoid interrupting flowering.
- Outdoor harvest depends on seasonal daylight.
Typical Indoor Schedule
- Seedling: 1–2 weeks
- Vegetative growth: 4–8+ weeks
- Flowering: 8–12 weeks
Total: roughly 14–22 weeks depending on how long you vegetate.
2. Regular Photoperiod Seeds
Regular seeds are the natural form of cannabis.
Each seed has roughly:
- 50% chance of being female
- 50% chance of being male
Advantages
- Favored by breeders because males are available for creating new crosses.
- Often considered the best choice for preserving genetics.
- Excellent for producing your own seeds.
Disadvantages
- About half the plants may be male and won’t produce the resinous flowers most growers want.
- Males must be removed promptly if your goal is seedless (“sinsemilla”) buds.
Best For
- Breeding projects
- Creating new strains
- Producing seeds
- Experienced growers
3. Autoflower Seeds
Autoflowers contain genetics from Cannabis ruderalis.
Instead of relying on shorter days, they flower automatically after reaching a certain age.
Advantages
- Fastest option from seed to harvest.
- Can grow under 18–24 hours of light throughout their entire life.
- Easy for beginners.
- Suitable for multiple harvests per year outdoors in favorable climates.
- Compact plants fit well in limited spaces.
Disadvantages
- Less time to recover from stress or mistakes.
- Limited opportunity for training because of the short vegetative period.
- Cloning is generally ineffective: a clone is the same biological age as the parent and will flower almost immediately.
- Typically smaller yields than large photoperiod plants.
Typical Timeline
- Week 1: Germination
- Weeks 2–4: Vegetative growth
- Weeks 4–5: Begins flowering automatically
- Weeks 8–13: Harvest (variety dependent)
Lighting Differences
| Stage | Photoperiod | Autoflower |
| Vegetative | 18/6 or 20/4 | 18/6, 20/4, or even 24/0 |
| Flowering | 12/12 required | Continue 18/6 or 20/4 |
Photoperiod plants rely on changes in day length to initiate flowering, while autoflowers do not.
Which Produces the Biggest Yields?
In general:
- 🥇 Feminized photoperiod (highest potential)
- 🥈 Regular photoperiod (similar potential, but half the seeds may be male)
- 🥉 Autoflower (smaller plants on average, though modern genetics can still produce impressive harvests)
Because you can extend the vegetative stage, photoperiod plants can be grown much larger before flowering.
Which Is Easiest?
| Goal | Best Choice |
| Highest yields | Feminized photoperiod |
| Fast harvest | Autoflower |
| Breeding and seed production | Regular photoperiod |
| Cloning | Photoperiod (feminized or regular) |
| Beginner indoor grow | Feminized photoperiod or autoflower |
| Maximum control over plant size | Photoperiod |
Summary
- Feminized photoperiod seeds are ideal if your goal is producing buds with minimal hassle. You get almost all female plants and full control over when they flower.
- Regular photoperiod seeds are best for breeders or anyone wanting both male and female plants to preserve or develop genetics.
- Autoflower seeds are the quickest and simplest option, flowering based on age rather than light schedule, making them well suited to rapid harvests and smaller grow spaces.