We are getting married on October 16th and have decided to grow our own annual flowers for it.

I did some research and have chosen:

-Several types of sunflowers including Burpee's Fun N Sun Hybrid Mix, Chianti Hybrid and Italian White.
- Bachelor Button
- Zinnias including Pinwheel Mix and Cut and Come Again Mix
- Coreopsis
- Verbena

I have also bought the "mega pack" of wildflowers that have many different flowers.

First question is are these wise choices?
Second - any more suggestions?
Third - when in the world should I plant these to have them in good condition for Mid-October? As soon as we're frost free or wait a little later?
Fourth - There is a slight possibility that we might have a frost before our wedding. Will that ruin the whole thing?

THANK YOU DEARLY!!!!

I'd add a mix of double calendula -- the old Pacific Beauty mix would be fine. The flowers are much smaller than sunflowers, but they aren't tiny, they cover some of the color range you're looking for and they're very frost hardy.

You don't have to start either of these early. I'd wait to start the batchelor's buttons until summer, so they won't exhaust themselves by October. The calendula seem to bloom and bloom. Plant a goodly number of each.

You might think of something like a double feverfew to give you a white filler. They're also cold-hardy.