Hey there! Are you speaking of yuor bouquet, or, for the centerpieces? I think silk is good because you will always have it. Real flowers are so pretty, but so expensive and they die way too fast. It is up to you. I am sorry if I am not more of a help! =-) The place we are having our wedding at provides the bride's bouqet, so, if I had a choice, I would go with silk. Good luck!