The worst threat to young trees and shrubs in winter isn’t cold or snow. “It’s bunnies and Bambi,” said Sharon Yiesla, plant knowledge specialist in the Plant Clinic at The Morton Arboretum in Lisle.

Did you hear about the guy who tried a new repellent to keep rabbits out of his garden? It was hare spray. Rabbits are fluffy and cute, but I stopped falling for that masquerade years ago. They cause ...