Seeds: Picking One You Won't Fight
What You Need to Know
A seed is genetics in a shell. Everything the plant will ever be — how tall it grows, how fast it flowers, how it handles stress, what the buds look and smell like — starts with what’s inside. You don’t pick a strain so much as match one: to your space, your patience, and your skill. Get this right and the plant does most of the work. Get it wrong and you’re fighting uphill from day zero.
For Level 1 there are really only three things to decide: photoperiod or autoflower, feminised (yes, always, for now), and where you buy. The dispensary shorthand — indica relaxes, sativa energises — is almost useless for growing. What matters to a grower is morphology: how the plant actually behaves in your tent over the next few months.
Photoperiod vs Autoflower — Two Different Contracts
Photoperiod plants flower when you tell them to. You run 18 hours of light for growth, then switch to 12 to trigger flower. That means you decide when she’s big enough, and — crucially for a beginner — if you make a mistake in veg, you can give her another week or two to recover before asking her to flower. It’s a flexible lease. The trade-off is you have to manage the flip and the timing yourself.
Autoflower plants flower on age, not light — usually around week three or four from seed, no matter what you do. You keep the light on 18–20 hours the whole way through, seed to harvest, and she sorts herself out. Faster (8–12 weeks), simpler, no flip to manage. But it’s a fixed-term contract: make a bad mistake in the first three weeks and there’s no extending the clock to recover. She flowers whether she’s ready or not.
For a first grow, both are grand — it depends on what you want. Autos are faster and need less management. Photoperiods are more forgiving of mistakes because you control the timeline. If your tent is small and you want something that finishes before your patience does, an auto from a reputable breeder is hard to argue against.
Feminised — The One Word That Matters
Only female plants produce the flowers you want. Males produce pollen sacs, and if a male pollinates your female, she pours her energy into making seeds instead of buds. Feminised seeds have been bred to produce only females, so you never have to sex the plant or worry about a hidden male seeding your harvest.
Regular seeds can be male or female, and you won’t know which until weeks in. Experienced growers use them to hunt exceptional females for breeding. Beginners have no reason to start there and plenty of reasons not to. So for Level 1: feminised, every time. That one word on the packet deletes a whole category of problems you don’t want yet.
Seb’s Corner — Phenotype
[SEB] Phenotype. The specific plant that grows from a given seed — the observable result of its genetics meeting its environment. Why it matters: a packet name like “Blue Dream” is a label a dozen breeders use for different genetics, and even within one pack, two seeds can grow into noticeably different plants. So buy from a breeder who stabilises their lines, and read the grower information — flowering time, height, difficulty — not just the name and the THC number. The name tells you the marketing. The phenotype is what shows up in your tent.
How To Apply This
- Decide your contract. Small space, want simple and fast, willing to keep your hands off for a month? Autoflower. Want room to recover from beginner mistakes and a bit more control? Photoperiod. Either way:
- Buy feminised. Non-negotiable for Level 1.
- Read for the grow, not the high. Look for stated flowering time, expected height, and a “difficulty” or “beginner-friendly” note. For a small tent, lean toward shorter, indica-dominant, faster-flowering genetics — they’re easier to keep under control.
- Buy from a seed bank that names its breeders, gives real strain descriptions with flowering times, has reviews that aren’t obviously fake, and answers an email before you’ve paid. If they won’t answer a question before the sale, they won’t after.
- Store what you don’t plant properly. Cool, dark, dry — a sealed container in the fridge is grand. Stored well, seeds stay viable for years. Left in a plastic bag on a windowsill, they don’t.
You only need one seed to grow one plant. Buying a pack is grand — just plant one and store the rest by the rule above.
Watch Out For
- The bag seed from a barbecue. Free, unknown strain, unknown sex, possibly sitting in someone’s drawer for three years. It costs you weeks of work, not a fiver. Genetics are the ceiling on the whole grow — the one place you invest rather than save.
- Buying with your ego. Picking the highest THC number or the hardest-sounding name lands you with a sativa that touches the ceiling of a small tent, or a fourteen-week flower when you expected eight. Match the plant to the space and your patience.
- Cheap “feminised” ten-packs from a no-name site. Two euro a seed, half don’t germinate, some come up male anyway. The genetics in the shell were wrong from the start, and no amount of good growing fixes that.
- Leaving spare seeds on a warm windowsill. Heat and light age them. Cool, dark, dry, sealed.
Quiz
Feminised seeds are bred to produce only females, so you don’t risk a hidden male.
It flowers on age, regardless of the light schedule.
You control the timeline, so a veg mistake can be absorbed before the flip.
An auto has no recovery window before its clock flips to flower.
Cool, dark, dry and sealed is the rule — the fridge is grand, the windowsill is not.
Common questions
What is the difference between photoperiod and autoflower seeds?
Photoperiod plants flower when you switch the light to 12 hours on and 12 off, so you decide the timing and can give a struggling plant an extra week or two to recover. Autoflowers flower on age, usually around week three or four no matter what you do, so they are faster and simpler but there is no extending the clock if you make an early mistake.
What does feminised mean and do I need it?
Feminised seeds are bred to produce female plants, which are the ones that make the flowers you are growing for. For a beginner growing one plant, feminised takes the guesswork out, so you are not spending months on something that turns out male.
Are autoflowers better for beginners?
They are simpler: one light schedule the whole way, no flip to manage, done in eight to twelve weeks. The trade-off is they are unforgiving, because a bad mistake in the first three weeks cannot be undone once she flowers on schedule. Photoperiods give you more room to fix mistakes.
Can I just grow a seed I found in some bud?
You can, but you are gambling months of work on unknown genetics, unknown sex, and a seed that might be three years old. Genetics are the ceiling on the whole grow, so it is the one place to spend rather than save.
Want the full story, in print? It's all in Grow Good Bud — and the kit to do it is at Dublin Indoor Gardening.