National Poinsettia Cultivar Trials - Established in an effort to bring a thorough body of research and information to poinsettia growers across the country. Includes photographs of a number of poinsettia verities.
Poinsettia Pages, The - Learn about the history, legends, selection, and care of poinsettias, the perennial flowering shrub that is native to Mexico. Also includes instructions for reflowering.
Pampering Your Poinsettia - Considers the plant's legend and offers tips on how to choose one and care for it.
Poinsettia: The Christmas Flower - Includes a story describing the history of the poinsettia and also provides descriptions of the major diseases that attack and blemish the red flowering plant. From the American Phytopathological Society.
