Plums are a great food to eat for all the family and are grown in most places in the northern hemisphere.
So can rabbits eat plum branches at all?
image wikipedia
Unfortunately they cant at all because they cannot eat stone-fruit branches such as cherry and peach.
This is because the hardwood from stone-fruits has arsenic in it and will make them seriously ill, if not kill them if digested.
The same goes for peach tree fruit and leaves. So if you have a peach tree in your back yard or garden, it is worth moving your rabbits accomodation well away from the peach tree.