Your seed choice locks in 80 % of your grow before the light ever switches on. Three decisions matter: auto vs. photo, feminized vs. regular, and the actual cultivar.
Decision 1: Autoflower vs. Photoperiod
| Autoflower | Photoperiod | |
|---|---|---|
| Flowers when… | On a genetic timer (~4 wks from sprout) | You flip the light to 12/12 |
| Seed → harvest | 10–12 weeks, fixed | 16–20+ weeks, you decide |
| Size | Small–medium, closet-friendly | As big as you let it veg |
| Training | Light LST only — no time to recover | Everything: top, LST, the works |
| Mistake tolerance | Low — a stunted week is gone forever | High — veg longer to recover |
| Stealth bonus | No strict dark period needed | Needs uninterrupted 12h darkness |
Honest take: autos are faster and simpler when nothing goes wrong — but photos forgive mistakes, and first grows have mistakes. If you can wait the extra month, a feminized photoperiod is the best first-grow choice. If speed or space rules, grab an auto and treat it gently.
Decision 2: Feminized vs. Regular
- Feminized (~99 % female): every plant makes bud. Buy these.
- Regular (50/50): half will be males you must catch and cull. For breeders, not beginners.
Decision 3: The cultivar itself
Forget "indica = sleepy, sativa = energetic" — modern strains are nearly all hybrids and the label tells you little. What to actually shop by:
- Grow difficulty. Breeders and seed banks flag beginner-friendly strains — mold-resistant, stretch-controlled, forgiving feeders. Classics like Northern Lights, Blue Dream, and GG4-type hybrids earn the reputation.
- Flowering time. 8–9 week flower finishes faster and risks less.
- Height/stretch. Read the breeder's numbers against your tent height — some "sativas" triple at flip.
- Your goal. Day-use, sleep, pain, flavor? Read the terpene/effect notes, not the indica/sativa banner.
Buying without getting burned
- Buy from an established seed bank or breeder with reviews — not an auction site.
- Fresh, dark, firm seeds germinate best; pale green or crushed ones don't.
- Buy 1.5–2x the plants you intend to run — germination isn't 100 %, and you want to pick the strongest seedlings.
- Know your local law first. Seed legality and plant counts vary — in New York, home cultivation has plant-count limits per household. The Local NY page covers where to check.
The first-grow genetics cheat code
One strain, multiple seeds. Running two different strains in one tent means two different feeding appetites, heights, and finish dates — in one small space. Master one cultivar first; get variety on grow #2.