Quick Question - Fertilizing during Flowering

Hey guys just a quick question... How often should I be fertilizing my plant once preflowers/flowering begins?

Thanks

IMHO it all depends on your leaves. I keep my leaves green throughout the grow when they tell me they need food or other minerals they receive until I am ready to harvest. This is a hotly debated topic here but just my two cents keep the plant happy and well fed leads to a larger and better quality end product. Happy Growing