Flipped to flower on 9/17. Immediately saw white hairs the next morning. Growing very quickly already - the flowering stretch is definitely a thing. Defoliation soonish, maybe.
First watering with full strength nutrients was today. 4 gallons given total, 20% runoff or so. Gave the runoff water to my tomatoes and other non-cannabis plants for fun.
Gonna give the plants a day or two before I do any more training. Will likely do defoliation and removal of any stems lower than the main ones at that time.