Ok man its like this all strains are different, some will stretch tremendouslyy and some only just a little. I flip my girls when they are 23 inches tall and by the time flower is over they are probaby close to 60 inches 60/40 sativa indica hybrid. They will continue to grow upward and outward during flower. there will be a time when they stop growing up and out and start to fatten up... cant tell withought knowing what your growing. If they do get too tall bending the tops over works great for me. The buds dont care.