I did a cake that had vines of gumpaste flowers on the bottom two tiers. They were combinations of orchids and freesia-type flowers on a stem.
When I set up the cake at the reception site I put a skewer in the center, hung the vines on it, then put a flower on top of that to cover it up. I filled in any empty spaces with more gumpaste, and there you have it!
Kara Buntin owns A Cake To Remember LLC in Richmond VA, and cake supplies online at www.acaketoremember.com and www.acaketoremember.etsy.com