It's possible to spend a bundle on flowers for a wedding, when you realize that you'll need blooms for the bride, the ends of the aisles, the centerpieces, and more.
If you stick with flowers that are in season, your costs will come way down. Even November offers calla lilies, and March is a fine time for freesia.
And within the season, be careful what you choose. Peonies can be even more expensive than roses.