What is too cold for a poinsettia?

Poinsettias thrive in temperatures between 65°F and 75°F (18°C to 24°C) and can suffer if exposed to temperatures below 50°F (10°C). Prolonged exposure to cold drafts or temperatures below this threshold can lead to leaf drop and stress in the plant. It's essential to keep them away from chilly Windows and doorways during colder months.