Poinsettia commonly known as Christmas Flower is the most widely grown of all shrubby euphorbias. In Mexico, it is a straggly deciduous shrub. Inconspicuous yellow flowers are surrounded by large brilliant red floral bracts (modified leaves) in winter through spring. Contrary to conventional wisdom, poinsettia plants are not a poisonous plant. Grown primarily as a pot plant, poinsettias are a big industry representing about 85% of potted plant Christmas season sales.