No matter where in the world you wed, white blooms are almost always available and in season. Start there, and mix in regional filler for freshness and flair.
For Country Weddings
Rattlesnake grass (in bouquet at left) looks soft and lovely against a background of rolling fields. Also consider wildflowers, lavender, or rosemary.
For Beach Unions
Shells or foliage are stunning in sandy spots. Also consider ginger flower, palm fronds, or sea grass.
For Mountain Nuptials
Pinecones or cedar sprigs fit rugged settings. Also consider pine, berries, or ferns.