Who pays for bridesmaid flowers?

ki

So I’m on a budget wedding, and I asked everyone who wanted to be a part of it that it was optional cause idk if they have the $ to participate and everyone said yes. So the ladies bought their dress, the men bought their tuxedos. My florist charged me $35 per bouquet and $20 for the guys . All of them added up pretty high, but individually they’re not that pricey. Would it be bad to ask each couple to cough up the $ for their flowers?