Not sure if you girls still like blue as a wedding theme, my brides loved it 2 years ago... but hey! I still adore it!
See some good ideas here below and a little bit of DIY if you are up for it.
Careful that delphinium comes in two different shades, make sure you order the right one, or both if you want to combine them like in some of the pictures below.
|blue delphinium eclectic centrepiece|
via style files and Martha Stewart
|Martha Stewart and Santa Barbara Chic|
|DIY delphinium garland|