In order to ensure your paperwhites will be in full bloom by Christmas, you'll want to start planting them in early to mid-November. Paperwhites require a consistent temperature of around 55-65 degrees Fahrenheit, so you'll need to keep them in a warm, bright space until they start growing. Once you see the leaves starting to emerge, you'll want to keep them in a sunny spot, such as a south-facing window, and continue watering them regularly. With proper care, you should have a beautiful display of paperwhites in time for Christmas!