mum flower cuttings

These were a couple of forced mum plants that did not sell at the flower shop spring of 2008. I brought them home and planted them outside in a planter.I forgot about them until late fall when they bloomed. It was really late in the fall with freeze warnings so I cut off the blooms and brought them in.They have been in the vase on the window ledge ever since. There are no roots I can see but they have stayed green and now there is a tiny flower.Mother nature is so wonderful.