I have 12 Wifi OG clones in my backyard. They seem like to be in the pre-flowering stage. My question is how long can it be considered week 1 of the flowering phase?
I like that answer. I usually call the first week of flower finished when they get clusters of pistils the size of a little finger tip. One or two pistils is preflower but when they become a cluster or like 10+ hairs is when they are really flowering.
I'd start doing bloom ferts one feeding and veg ferts the next until they finish the stretch. They still need a good amount of N until they stop upward growth. This way that get everything that need for this crucial period.
