When attaching the church wedding flowers to the candelabra, keep two things in mind. Don't damage the metal and use wire in a way that you can quickly snip and dismantle after ceremony is over.
I sometimes use electrical cord ties. These can be found in any hardware store (and in many discount stores like Wal-Mart). They are very strong and hold considerable weight.
Best of all - they go on quickly and come off with a snip of a wire cutter. However, if you have difficulty finding long enough ones, you can use enameled florist wire.
Many of the florist shaped foams come with handy tabs pre-drilled with holes. These are created so florists can easily attach their designs to easels and candelabras.
Wire or the zip tie fits down perfectly into these tabs.
Be sure you have plenty of length in order to place your flowers exactly where you want to attach them.
At this point, I'm slipping the tie over the bottom rung of a metal candelabra. I want these designs to be securely placed. You do not want the flowers shifting or swinging if the candelabras are moved.