Know Your Seed Types
The first decision any grower faces is choosing between feminized, regular, and autoflower seeds. Each type serves different purposes and suits different growing situations.
Feminized Seeds
- 99%+ chance of producing female plants
- No need to identify and remove males
- Best for growers focused on flower production
- Ideal for limited-space gardens
- Cannot be used for breeding (no males)
Regular Seeds
- Natural 50/50 male-to-female ratio
- Required for breeding programs
- Often considered more vigorous
- Better for phenotype hunting
- Must sex plants early in flowering
Autoflower Seeds
- Flower based on age, not light schedule
- Seed to harvest in 8–12 weeks
- Compact plants, ideal for stealth grows
- Multiple harvests per outdoor season
- Generally lower yield than photoperiods
For most home growers, feminized seeds are the practical choice. Every plant produces consumable flower, there's no risk of accidental pollination, and modern feminization techniques produce stable, high-quality genetics. Regular seeds remain essential for breeders and for growers who want to select their own mother plants from a wider genetic pool.
Choosing for Your Environment
Your growing environment should be the primary factor in seed selection. A strain that thrives in a California greenhouse may struggle in a small indoor tent, and vice versa.
Indoor Growing
- Prefer indica-dominant strains for compact growth
- Consider flowering time — 8-9 weeks saves electricity costs
- Look for mold-resistant genetics in humid environments
- Height control is critical — check listed stretch ratios
- Autoflowers work well in small tents (2x2, 3x3)
Outdoor Growing
- Match flowering period to your local season length
- Northern climates need early-finishing strains (late Sept)
- Sativa-dominant strains thrive in long, warm seasons
- Prioritize pest and mold resistance for uncontrolled environments
- Landrace genetics often excel in their region of origin
Climate is particularly important for outdoor growers. If your area gets fall rains before October, long-flowering sativa strains will likely develop bud rot before they finish. Conversely, if you live in a warm climate with a long growing season, you can take advantage of sativa genetics that need 12+ weeks of flowering to reach their full potential.
Experience Level Matters
Not all strains are equally forgiving. Some genetics are robust enough to handle beginner mistakes, while others demand precise environmental control to express their full potential.
Beginner-Friendly Traits
- Vigorous growth — recovers from stress quickly
- Mold resistance — tolerates humidity fluctuations
- Short flowering — less time for things to go wrong
- Stable genetics — consistent results seed to seed
- Forgiving feeding — handles nutrient variation
- Manageable stretch — predictable height
Strains from established breeders with a long track record tend to be more stable and predictable. On SBI, look for strains with the verified badge — these have confirmed lineage data, which correlates with genetic stability.
Reading Seed Descriptions
Seed listings contain a wealth of information, but understanding what each metric actually means helps you make better decisions.
Indicates potency potential under ideal conditions. Lab-tested percentages from breeder sites are often peak results. Real-world results vary based on growing skill, environment, and phenotype. Higher THC doesn't always mean better — the terpene profile shapes the actual experience.
Measured from the switch to 12/12 light (photoperiods) or from seed (autoflowers). Most indicas finish in 7–9 weeks; sativas take 10–14. Add 1–2 weeks to breeder estimates for a more realistic timeline, as breeders often report the fastest phenotype.
Usually listed as grams per square meter (indoor) or grams per plant (outdoor). These are best-case numbers from experienced growers. Beginners should expect 50–70% of listed yields. Environment, training, and nutrition all affect final weight.
The parent strains used in the cross. Knowing lineage helps predict growth patterns and effects. On SBI, you can trace lineage through the Genetics Database to see the full family tree and find related strains.
Why Provenance Matters
The cannabis seed market has a counterfeit problem. Without verified provenance, there's no way to confirm that the seeds you receive are actually what the label claims. This is why SBI built its provenance certificate system — every transaction generates a cryptographic certificate that links your purchase to the original breeder.
When choosing where to buy seeds, look for:
- Verified breeders with confirmed identity and track record
- Provenance certificates that cryptographically link seeds to their source
- Genetics database entries showing full lineage and breeding history
- Community reviews from other growers who have run the same genetics
Buying verified seeds isn't just about quality — it's about supporting the breeders who do the years of work to create and stabilize new cultivars. When you buy through verified channels, breeders get proper attribution and compensation for their genetic contributions.