What happens if I start autoflowers under 12/12 light? Will they still veg for x amount of time then flower? Or will they flower right away?
3 Likes
They will still flower exactly when they decide they want to. Usually 25 days after sprouting…
You could give them only 8 hours light a day, and it would still be the same.
Less light means smaller buds though.
4 Likes
They will veg and flower normally, but they will get fewer photons because the lights are on for fewer hours.
3 Likes
The reason I’m asking, is I have a heated greenhouse, but I dont want to use extra light. So I can start autos out there for selfing for auto fems for the springtime. I’m just wondering if they would grow fir a bit before flowering or start flowering from seedling stage
1 Like
They will grow as normal, they are not triggered by day length.
3 Likes
Can’t add to what @ReikoX said above 
1 Like
They will grow per normal, if anything their time span may lengthen and take a little longer to finish just cause they aren’t getting as much energy say comparably to a longer day span withe equal light intensity.
3 Likes
The autos will start to flower on a set schedule, it has little to do with amount of light. If it will grow to maturity in 65 to 70 days under 24/0, it will do about the same under 12/12 as a much smaller plant with much smaller buds.
I ran the same strain indoors vs out this year (meph forgotten cookies). Indoors was 20/4. They were finished within 2 days of each other. Indoor harvest was almost twice as much (130g vs 70), buds were tighter and tastier.
There IS a pic somewhere I think on a Mephisto thread of my plants side by side.
1 Like
I run all my autos 12-12 lighting grew then for 2 years straight
Did loads of experiments lol ran them 24 hour 18-6 12-12
They all grow the same,if the genetics are good
That’s just me
1 Like
2 Likes