flush now??

When the buds start the slow down in growth or production.. Slow down the amount of nutrients you are using.. it's a let the plant decide type situation.. The plant she speaks to you.. Learn to listen.

speaking from experience.. The flushing isn't as important as having balanced nutrients throughout the whole cycle.. The idea that flushing cleans the buds up is really poor understanding of plant biology. Plants have a lot of immobile nutrients that they will not flush out and remove. That being said judging by the look of your Cannabis you should be fine to not even flush at all.... I know it's a crazy idea.. And don't search on the internet about this you will find tons of information about flushing. Growing is an Art form not a collection of information that is stoner science and poor understanding of how plants actually work.