
If you have deer or elk in your area, then they can be the culprits. They will usually return though and decimate the canes as well! Using products such as Deer Scat! can help. It could also be night feeding worms. Using a systemic application such as Bayer Tree and Shrub granules works wonders. Apply the granular product per the label directions for ornamental shrubs. You can also spray an insecticidal spray on any remaining foliage to help protect it while the granules treatment kicks in. Hang in there, I know this is frustrating....