However, we rarely recommend pruning sealer because it
interferes with trees innate ability to heal damage from pruning
cuts and animal damage. Despite the startling appearance of the
damage, your hemlocks are able heal themselves from rabbit
There are a number of animal
repellents that can help minimize animal damage, including
Liquid Fence, Deer Away, Deer Scram, Plantskydd and many others.
Some work because of the smell, while others work because of the
taste. Many of these discourage rabbits as well as deer. Rotate
among repellents to avoid the animals becoming habituated to
Fencing the hemlocks off for
the winter is another effective means of protecting them. To
protect them from deer, the fence would need to be eight feet
tall. Woven wire fencing or heavy-duty deer netting are most
effective. A two-foot tall fence of chicken wire or hardware
cloth would effectively deter rabbits.