Place the potted poinsettia plant in a location with a lot of sunshine. Choose a site close to a south-, west- or east-facing window or glass door.
Set the room temperature 65 to 70 degrees Fahrenheit to keep the poinsettia in bloom. Never allow the temperature to go below 60 degrees to prevent root rot disease.
Keep the potted poinsettia out of areas with hot or cold drafts or away from overly dry air, such as near heating vents. Sudden changes in temperature can damage the poinsettia.
Check the poinsettia's soil every day. Water as needed to maintain moist soil, but never allow the plant to sit in water.
Remove decorative wrapping or make several holes in the bottom of the wrapping to allow the water to properly drain. Discard any water remaining in the drainage tray after watering.