Poinsettias are a popular Christmas plant, and they can be a bit tricky to care for. To keep your poinsettias thriving after the holidays, make sure to keep them away from drafts and extreme temperatures, and water them regularly but not excessively. Poinsettias like bright, indirect sunlight, so make sure to place them in a spot where they will get plenty of light but not direct sun. In terms of fertilizer, use a balanced, slow-release fertilizer every two to four weeks during the growing season, which is usually between April and September.