vegetative time span?????

hey guys. i wanted to know if any of you know whats the longest time for a plant to be in its vegetative phase? 2 wks? 3? 4? i know it all depends on the strain youre using but i just wanted an average time span. i also will be growing hydroponically in a deep water culture system. i appreciate all your help people.

a plant will veg as long as you want it to just keep the lights at 24/0 or 18/6. You start flowering when the plant is 1/2 of the size you want it to be, they double or even triple in size when flowering.

I wouldnt veg much longer than 3 weeks in hydro usually 2 weeks