Today’s poinsettias are bred for extra-long life. With proper care, the colorful bracts should last well into the new year. To keep poinsettias looking good:
Keep the poinsettias between 68 and 70 degrees F. If you’re comfortable, they will be comfortable, too. Never expose the leaves to temperatures below 50 degrees F.
Check the soil daily and water as soon as the surface feels dry. Be sure to empty any water that collects in the saucer beneath the pot.
Place the poinsettias where they will get as much bright light as possible, but never in direct sun light. If your plant is close to a south facing window, use sheer curtains to filter the sun’s rays. Also, avoid placing your plant in drafty locations, near a door or heating grate, for example.
Do not fertilize poinsettias while they are in bloom.