St. Patrick's Day
St. Patrick's day was originally celebrated as a commemorative holiday in Ireland on the anniversary of St. Patrick's ( the patron saint of Ireland) death. It is now celebrated around the world by the "Irish at heart" with partying, drinking, and lots of green.
There is not a standard or common type of flower arrangement for Saint Patrick's Day that I could find like there is for other holidays. Color scheme of these arrangements are white and green, sometimes feature yellow. They often feature leprechaun hats or shoes and clovers to show the luck of the Irish. St. Patrick's day floral arrangements seem to be more homemade than professionally sold.