10 Most Romantic Flowers 3-Red Roses. 4-Orchids. 5-The Stargazer Lily. 6-Pastel Carnation. 7-Daisies. 8-Alstroemeria. 9-Camellia. Camellia is the perfect choice for a couple that is celebrating many years together. 10- The Blue Iris. An elegant and sophisticated-looking flower, the blue iris is a lovely and unique flower to give as a romantic gift.