Poinsettias flower in December and January. Which term best describes this kind of plant?

Poinsettias are part of the Euphorbiaceae or Spurge family. Botanically, the plant is known as Euphorbia pulcherrima. In Nahuatl , the language of the Aztecs, the Poinsettia was called Cuitlaxochitl (from cuitlatl, for residue, and xochitl, for flower), meaning "flower that grows in residues or soil.

Dthrough a slow process