Ten facts about Christmas’s most popular plant
by Ron Wolford
December 7, 2014

For many years, the poinsettia has been the traditional Christmas flower.

Ron Wolford, a University of Illinois Extension horticulture educator, offers a few facts about this traditional Christmas plant.

Poinsettias are part of the Euphorbiaceae or Spurge family. Botanically, the plant is known as Euphorbia pulcherrima.

In nature, poinsettias are perennial flowering shrubs that were once considered weeds. Joel Roberts Poinsett introduced the poinsettia plant to the United States from Mexico. Poinsett was a botanist, physician, and the first United States ambassador to Mexico.

Many plants in the Euphorbiaceae family ooze a milky sap. Some people with latex allergies have had a skin reaction (most likely to the sap) after touching the leaves. “For pets, especially puppies and kittens, the poinsettia sap may cause mild irritation or nausea. It is probably best to keep pets away from the plant,” Wolford said.

Despite rumors to the contrary, Wolford noted that poinsettias are not poisonous. “A study at Ohio State University showed that a 50-pound child would have to eat more than 1 1/4 pounds of poinsettia leaves (500 to 600 leaves) to have any side effects,” he said.

The showy colored parts of poinsettias that most people think of as the flowers are actually colored bracts (modified leaves). The yellow flowers, or cyathia, are in the center of the colorful bracts. For the longest-lasting poinsettias, choose plants with little or no yellow pollen showing. There are over 100 varieties of poinsettias available. Though they were once only available in red, there are now poinsettias in pink, white, yellow, purple, salmon, and multi-colors. They have names like 'Premium Picasso', 'Monet Twilight', 'Shimmer', and 'Surprise.’

The red poinsettia still dominates over other color options. 'Prestige Red’—one of many poinsettias patented by Ecke—ranks among the best-selling hybrids.

“Poinsettias are the most popular Christmas plant,” Wolford said. “Most poinsettias are sold within a six-week period leading up to that holiday, representing some $60 million worth.”

Dec. 12 is National Poinsettia Day, which marks the death of Joel Roberts Poinsett in 1851.

For more information about poinsettias, check out the University of Illinois Extension web site Poinsettia Pages at

  • New Eden
  • Kids Garden
  • Plant a Row Grow a Row