I have poinsettias planted outside (Zephyrhills, Fl). At what temp should I cover them when it gets cold at night and with what do I use?
Poinsettia Winter Care
Certified GKH Gardening Expert
They really can't tolerate temps below 40F. I would consider covering them if you expect temps between 45F to 50F.
It is best to cover plants with a cloth sheet. Do not use plastic directly as this will harm the plants, though you can cover with a cloth sheet and then a plastic one if you are expecting rain.