Does flowering begin? Why!? Light 18/6

Typically when the plant is in late vegitative cycle it will indicate wether or not it is male or female with its preflowers. If it pops up with little sacs that is an indication that it is male and if it pops up with 2 little white hairs it indicates that it is female. So long as you keep the light cycle of 18/6 it will remain in the vegitative state. The only exception to this is if the plant is an auto flower which means it doesn’t depend on the light cycle but more so the age of the plant. What you have showing is it’s preflowers and is normal. It will not switch to flower unless you switch the light cycle to 12/12. Also keep in mind that when you do switch to flower the plant is going to stretch 2-3 times it’s current size. Make sure you don’t run out of upward growth when you switch to flower. You can determine this roughly by multiplying the plants current height by 2 or 3 and it will give you a rough estimate as to were it will stop growing. Hope this helped.