Hey, Jerry. You don't need a PhD in Physics to recognize wire.
Yes, it's wire. It doesn't damage the spikes because it isn't wound tight around the spike, just wide circles around the spike, but strong enough to support the flowers. I do marvel a little at the delicate touch it must take to do it without damaging the spike. Not sure really my 70year old fingers are that delicate any more, but I want to try
Patti and Solay: thanks for the tip about crafts stores or florists. I bet these spikes probably are what's used by flower arrangers. I will see if I can find them locally