Seperating veg. from and flowering state?

Hi!
This is my first thread and i just wanted to say hi and thanks for all the useful information that this forum provides!

I was wondering why you have to seperate plants in there vegetative phase from plants in the flowering phase

Any help is greatly appreciated!
thanks!

because veg has a longer light cycle than flower. 18 hours of daylight as opposed to 12 hours of daylight for flower. seperate rooms are the only possibility.

dahamma said:

because veg has a longer light cycle than flower. 18 hours of daylight as opposed to 12 hours of daylight for flower. seperate rooms are the only possibility.

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yea. for veg state you want 18 hours of light and for flowering you want 12 hours of light. when they are flowering if more than 12 hours of light is received it ruins the cycle and starts them on the veg state again, also stressing the plants out