Submerged floral centerpieces-How long can flowers last underwater?

I am wanting to make my own wedding reception centerpieces. The flowers would be a mixture of mini orange callas.. cymbidium orchids and alostromerias- I would like to make them 1-2 days in advance and may change the flowers included if they aren't the best for the job!

Submerged floral centerpieces-How long can flowers last underwater?
The alstromerias should be fine. I'm not too sure about the callas.





White orchids will turn clear if they are in too much water and kind of look like lettuce that has been kept in the fridge too long.





Roses work really well, though - I know that wasn't one of your choices.





I love those kind of arrangements, even if they are a little high maintenance- I think they are beautiful.
Reply:i saw a fabulous picture where they put waterproof lights in the bottom of the vase and lamp shade on the top and it looked awesome. they had 2 submerged calla lillies in each vase. one up the right way and one upside down and their stems were curled around (maybe wired).





if you wanted to do them early you could use artificial flowers. nobody will know as they can't touch them anyway
Reply:Think about silk flowers
Reply:Those are really hot right now, infact I just suggested them to someone on Answers. Do not make them a few days in advace. They need to be made the day of the wedding. Callas are stunning submerged as are orchids. Cymbidium orchids hold up better than Dendrobium ones do. Roses also look great, and so does Hypernicum, and Lilly Grass. I dont know how many you have to do, but if you do them the same day they will look great!