When I’m growing outside, under the big light in the sky it sometimes become difficult to tell if the plant is in vegetation or starting to flower
A couple of weeks ago I started using auto flowers. This made me revise Any signs I could look for to tell which stage the plant is in i’m sure there are people out there that are aware of the signs I am not. I will look for stretch and leaves start to put out less petals. What other signs should I be looking for please?
White hairs.
With regs i find they usually start at 14 weeks light. But ymmv.
With autos all bets are off.
Thanks. foreigner yes, if I see little white hairs on my photos I feel quite confident that they are starting to flower.
Sometimes my plants start looking a bit cluttered at the tips. And I’m unsure But the white hairs a sure thing
You will likely also see lighter yellow tips and possibly exponential growth.
GWE is still a plethora of knowledge for a new grower. I used it exclusively to start my growing endeavor. 
Here’s a link that should answer all your questions:
You should see these when its old enough and/or actually flowering little white hairs at the base
The little hairs are small easy to miss at first
When they start looking like Guy Fieri
When you start seeing tiny hedge hogs on the tip of your plants
