I have 1 plant on a mineral feed Plagron terra bloom( plus pk-13/14) All my other grows are organic, so i barely have any flush requirements. So i was wondering, do you start a flush 2 weeks before plant is ready? Or only when its completely ready?
You want to time the fush so that it ends when the plant is going to be harvested, so about 2 weeks before the estimated harvest date is when to start the flush.
If you wait until it is ready before starting the flush, your plant will be over ripe come harvest time.