Q.Spirea shrub
I live in Canada, in South Western Ontario. I am having problem with a Rabbit eating my Spirea shrub, especially in winter. I bought covers for them that are fastened into the ground which freeze and do not move once winter comes. Then when I removed them to get the warmer sunlight, the rabbit came back and has actually killed one of my shrubs.
Do you know of anything I can put around my shrubs to deter the rabbits? I prefer a “natural” deterent if you know of one. I still have 3 left but they are not getting larger due to this crazy rabbit.
I appreciate any solution that you might have. Thank you.

I understand this frustration very well!
These articles may help you.
https://www.gardeningknowhow.com/plant-problems/pests/animals/camouflage-gardening.htm
https://www.gardeningknowhow.com/plant-problems/pests/animals/keep-rabbits-out-of-gardens.htm