There are a huge variety of wedding flowers for you to choose from.  Your flower shop / florist will be able to inform you of all the exotic blooms and when they are in season.  Obviously flowers that are in season will be cheaper and more abundant.
Shops-Flower will help you choose the right blooms to enhance your special day giving a list of wedding flowers with their associated meanings, and a guide of what seasonal wedding flowers are available from your flower shop / florist.