Honoring Tradition: Memorial Day, Its History, and the Role of Artificial Flowers Memorial Day, observed on the last Monday of May, is a deeply meaningful national holiday in the United States. It honors the men and women who have died in military service to the country. As communities gather to pay respects, one custom remains especially poignant: adorning graves with flowers. Over time, this tradition has evolved. Artificial flowers now play a central role in many Memorial Day observances—t...