How soon do you do it?

[Slevenson6]

What’s the earliest plant you have put into flower and still have gotten a decent yield?
I have two larger plants in my tent that I would like to change to 12/12 but don’t have a good place for the 2 week olds. Thanks

 

[mysticepipedon]

In organic soil, about 5 weeks. With other ways of growing, it could be less.

If you have no place to put the smaller ones, you don't have much choice.

 

[growsince79]

What’s the earliest plant you have put into flower and still have gotten a decent yield?
I have two larger plants in my tent that I would like to change to 12/12 but don’t have a good place for the 2 week olds. Thanks

Depends on the strain. Most hybrids need 3-4 weeks. Some can make good yield without any veg cycle.