Wow Kathy, that is great to have a poinsettia that tall! I have only read about them being heirloom plants, yet to see one, you must send a pic when you have a moment.
Kathy you probably want to cut to the maximum recommended which is 4 to 5 inches from the tip of the branch. I'm not sure if you have done this yet but you will have to control the growth of the branches. As poinsettias get older their branches seem to go haywire.
IN HIS SERVICE
Genexxa
Poinsettia Expert
IN HIS SERVICE
Genexxa
Poinsettia Expert