I planned, hosted, catered,decorated, did florals for, and paid for, my SIL's wedding a couple of years ago. Not sure what your venue/theme is but I ordered flowers online from a wholesaler (ABACO) I ordered a box of daisies and had them delivered 4 days before the wedding, the night before and morning of, I cut them all and placed them in small fishbowl style vases that had colored marbles in them (marbles and glass bowls from dollar store) and votive holders.The morning of, I also purchased 4 dozen roses (2red 2white) at the grocery store for like $10.00 a dozen, to mix in with the daisy bouquets and other vases (my own) that were placed in random places (cake table, serving tables etc.) I also bought a bunch of "million stars" (prettier and fuller than baby's breath)
The whole box of daisies was A LOT of flowers, they also sell roses, lilies etc, if you are crafty and have the time and storage space it can be the way to go.