Here's the red poinsettia, one of the plants from the spurge family, Euphorbiaceae. With its striking star-shaped leaves, the poinsettia has become a symbol of Christmas cheer, brightening homes and public spaces during winter. The history of the poinsettia can be traced back to ancient civilisations. The Aztecs, who called it cuetlaxóchitl, used it to make a reddish-purple dye and to treat fevers. But the plant's association with Christmas has roots in Mexican tradition, where it's known as 'la flor de Nochebuena' or 'Holy Night flower.' According to legend, a young girl, unable to afford a gift for Baby Jesus, was inspired to offer humble weeds, which miraculously transformed into the vibrant poinsettias we know today.