How to use it. Peeking above the surrounding foliage, sea holly's form breaks up surrounding foliage and creates vertical interest, while its color is in tune with the masses of purple, light green and cream. Plant sea holly in a rock garden, where its preference for well-drained and light soil will come in handy and its cool-blue foliage will complement natural stone colors.
Sea holly is more commonly seen in floral arrangements. Whether used as the primary flower or a bouquet accent, they are long lasting when cut — both fresh and dried. Cut stems when flowers are half open for best results.