Here are two pictures of a portion of my raspberry patch the rabbits have been munching on every Winter for at least a decade. Notice the lush and green canes of last year's growth. Raspberries are biannual, producing berries on last year's growth.
The latest technique to keep my raspberry canes protected from the rabbits over the Winter worked to a point. Note, the electrical conduit cover was untouched.... .... .... ... The raspberry cane above the conduit was eaten away