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Autoflower Seeds South Africa — Harvest on a Fixed Clock

Autoflowers bloom on age rather than daylight, finishing roughly eight to ten weeks from germination whatever the calendar says. That matters twice here: it fits a Highveld season bracketed by frost at both ends, and it removes the light schedule entirely, so an interrupted power supply cannot break a dark period and stress a plant into producing pollen sacs.

Also worth a look: autoflowering indicas the squattest, densest plants, autoflowering sativas when you want more lift, autoflowering indicas a small, quick plant that times itself, and outdoor picks genetics that cope with a humid KwaZulu-Natal finish.

422 strains available

Seed To Harvest8–10 Weeks
Expected Height60–120 cm
Annual Indoor RunsUp to 4
Best Suited ToNew Growers & Speed

What is in Autoflowering Seeds right now

There are 422 autoflowering seeds in stock as this page was built, and the tested THC across them runs from 5% up to 33%, with the middle of the range sitting at 20%.

Strains
422
THC range
5-33%
Median THC
20%
Auto / Photo
422/0
  • Autoflowering: 422 strains (100% of the catalogue) — finishes 8-10 weeks seed-to-harvest.
  • Indica-dominant: 209 — body-led effects, compact structure, Myrcene-Caryophyllene terpene signature typical.
  • Sativa-dominant: 49 — cerebral effects, taller plants, Limonene-Pinene-Terpinolene profiles common.
  • Balanced hybrid: 163 — mixed indica/sativa lineage, ranges from 60/40 to 50/50 splits depending on phenotype.
  • CBD-rich therapeutic: 1 — elevated CBD with proportionally lower THC, suited to medical-focused growers.
  • Alphabetical lineup starts with: 24k Gold, 3 Kings, 3X Crazy — see the full grid below for filters and grow specifications.

Autoflowering Seeds — Browse All Strains

Flowering on age instead of daylight

An autoflower carries ruderalis ancestry, and ruderalis evolved where summers are too short to wait for the light to change. The result is a plant that begins flowering roughly three to four weeks after germination regardless of the photoperiod, and finishes eight to ten weeks later whatever the calendar says.

Why that suits the Highveld

Inland South Africa gives you a season bracketed by frost at both ends. A photoperiod plant flipped late can still be filling out when the first frost arrives; an autoflower started in October simply finishes. It is the difference between planning around a deadline and not having one.

The power-cut argument

A photoperiod plant indoors depends on an unbroken dark period. A timer that loses its schedule during an interruption breaks that cycle, and a broken cycle is the most common way a plant ends up producing pollen sacs. An autoflower does not care what the lights do — it flowers on age.

What you give up

Control. You cannot extend the vegetative phase to grow a bigger plant, and you cannot delay harvest to suit your diary. Autoflowers are also less forgiving of transplant shock and heavy training, because there is no recovery time built into a ten-week life.

Getting the most from one

Plant into its final container from the start, feed lightly early, and avoid anything that stalls growth in the first fortnight — those days are never recovered. Two runs in a season are realistic in the frost-free Lowveld and on the KwaZulu-Natal coast.

Frequently Asked Questions

How long from seed to harvest?
Typically eight to ten weeks in total, occasionally eleven for larger autos. That figure runs from germination rather than from a flip, which is what makes autoflowers easy to schedule around a frost date.
Can I grow autoflowers outdoors here?
Yes, anywhere in the country, and they are the most reliable outdoor choice inland. Plant from October once frost risk has passed. On the frost-free coast you can start earlier and fit a second run.
Do autoflowers produce less?
Per plant, usually less than a well-run photoperiod that has vegetated for weeks. Per season the gap narrows considerably, because you can run more cycles in the same window.
Do they need a different light schedule?
No schedule is required at all, which is the point. Many growers run 18 or 20 hours of light throughout simply because more light means more growth, but the plant will flower on time regardless.

Other Ways Into the Catalogue

Auto IndicasAuto SativasAuto HybridsFeminised SeedsBeginner SeedsFast FloweringOutdoor SeedsIndoor Seeds

Too many to choose from?

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Autoflowering Seeds A–Z

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