When you describe the look you want as "rustic," most florists think of the outdoors, worn vessels, and arrangements with that "just-picked" feeling. Blooms like sunflowers, daisies, and zinnias placed in old crockery come to mind. To skew away from the casual, country connotations this word often creates, have your venue and, most important, the formality of your celebration in mind.
"The reception will be held in spring, in a field, and will have a preppy vibe."
Flowers of the World