GrowCNanswered grow question 2 years ago If you are keeping the plant in vegetative growth it might never flower. Some people veg for 4-6 weeks while others will veg for 3 or 4 months before switching to flower. It is important to remember with a photo period plant that transition is controlled by you if growing indoors or the length of daylight outdoors. You need to switch the lighting to force/tell the plant to switch into flowering mode. It should show signs of flowering within a couple weeks. Then... your flower time clock starts.