I have taken clones from plants 8 weeks into flowering and had no problems rooting it at all, they where little buds with roots, however reverting these rooted buds into a veg state again took about a month, but then they burst into huge bushy monsters, with amazing growth and ended up being large yielders once re-bloomed.......so not being able to take clones from a flowering plant is a myth, it is not a problem at all, i find they even root faster because of the higher phosphorus an potassium than a vegging plant that has a lot of nitrogen.......take clones from flowering plants..it's no problem, ....but if you want to avoid a major reveg take them within the first 10 days of initiating 12/12....