Chrysanthemums are also called mums or chrysanths and are flowering plants of the genus Chrysanthemum. They are originally from Asia and north eastern Europe. However, most species of Chrysanthemums originate from east Asia particularly China.
image wikipedia
So can rabbits eat Chrysanthemums at all?
Unfortunately, they cant eat them at all. They are poisonous for bunnies and will be harmed if they do consume them. So steer clear of feeding them to bunnies.