Never let the potting mixture completely dry out. When watering, take the plant out of its decorative pot or cover and water until water seeps out of the drainage hole, completely saturating the soil. Don't let the poinsettia sit in standing water. This can cause root rot and could kill the plant. Don't fertilize when the plant is in bloom.
Poinsettias are sensitive to cold weather.
An enclosed patio or entryway may be a suitable place for them, if night temperatures remain above 55 Fahrenheit. Make sure the delicate bracts are well-protected from wind and cold rain. If the temperature drops below 50 F, premature leaf drop will occur as a result of chilling injury.