Id like to share a quick experience I had with this a few years ago: i took cuttings 4 or 5 weeks in. All rooted and were doing well. After I had root development, I vegged for only a couple weeks then threw them into the flower room. All but one quickly started their stretch and normal flower pattern for a clone. The last one, believe it or not, just immediately went into rapid flowering AND DID NOT STRETCH OR GROW VERTICALLY! She ended up fully flowering in like 3 weeks and was ripe and ready to harvest! She was seriously like an 8 inch single cola that, when dried, was like 4 grams!!!! Never had this happen any other time.