Where can I find silk (fake) herbs/flowers for decorating?

I do flower arrangements as a small part- time thing. May I strongly suggest that you do not use fake flowers at your wedding! (You have fennel/rosemary which are herbs!!!) Your guests are going to be looking at all these (crazy) looking fake things and wondering to themselves, if she couldn't afford one why did she have a wedding? Most of those flowers aren't actual flowers and the others are wild flowers, which you'd never find "copies" of. If you change your perspective, I hope the arrangements turn out.......well, better than they sound. Sorry! You have to be realistic........