Poinsettia care begins with proper light, water, and temperature conditions. During the holidays, while in full bloom, they typically enjoy semi-cool, humid locations in bright, indirect light with plenty of moisture.
Poinsettias change color in response to shorter winter days. Poinsettia flowers are actually made up of the bracts, which look like petals, and the tiny yellow flowers in the center, called cyathia. The colorful bracts attract insects to the flowers and will drop after pollination.
The poinsettia (Euphorbia pulcherrima) is a commercially important plant species of the diverse spurge family (Euphorbiaceae).
It is particularly well known for its red and green foliage and is widely used in Christmas floral displays. It derives its common English name from Joel Roberts Poinsett, the first United States Minister to Mexico, who is credited with introducing the plant to the US in the 1820s. Poinsettias are shrubs or small trees, with heights of 0.6–4 m (2.0–13.1 ft).
Though often stated to be highly toxic, the poinsettia is not dangerous to pets or children. Exposure to the plant, even consumption, most often results in no effect, though it can cause nausea, vomiting, or diarrhea.