Sage stands for the virtue of the bride. Southernwood is another plant that adds fragrance and texture to the bouquet. Myrtle , when used in a wedding, stands for fertility. The late Princess Diana had some of Queen Victoria's myrtle in her own wedding bouquet. Lavender means best wishes for the bride and groom.
Roses stand for true love, of course.
Baby's breath fills in the gaps and adds a light, airy feeling to the completed bouquet.