Knowing exactly how much you want to spend is key, both for your own sanity and for your florist's. Whether or not you have a sky's-the-limit wedding budget (which, let's face it, almost no one does), setting a cap on what you're willing to shell out will save you both some headaches. If your florist knows how much you can spend, he or she can be more realistic about what's in his or her power to accomplish.
So, what's reasonable for a flower budget? Plan to spend about 8 to 10 percent of your total wedding budget on flowers. To put that in perspective, the average cost of a wedding in the United States in 2009 was $19,580 (in 2007, it was $28,730). That's a little less than $2,000 for flowers; a good benchmark to lowball for the thrifty, or to blow past for those with the means and inkling to gild the lilies.