There are many different options of purple wedding flowers, including flower varieties such as limonium, roses, scabiosa,hydrangeas, anenomes, smallcallas, lavender button mums, campanula, freesia, iris, liatris, lisianthus, masumoto asters, spray asters, decorative kale and more. Keep in mind that some of these flowers are seasonal and may not be available during your wedding date.
For this tutorial I simply used varied shades of purple and lavender carnations. If you'd like even more interest, add in spray miniature carnations available in the same purple and lavender shades.
To add more interest and texture, I did use lavender alstroemeria as well.