Then there is the problem of ice and snow accumulation which affects both deciduous trees and evergreens alike. What to do The key to minimizing branch breakage lies, once again, in good fall tree maintenance, particularly pruning. One solution for very small trees and shrubs might be to cover the entire tree with a sturdy tent-like housing. And, for larger evergreens, you might think about using rope to tie up and reinforce branches. Apart from deer in the more rural areas, the two major culprits are mice and rabbits both of which chew bark and can girdle trees.
Squirrels can also become a problem.
What to do To guard against mice, leave a space between the mulch and the trunk of the tree and check frequently. If mice are proving to be a problem, you may have to think about setting out bait. Follow package directions carefully. Rabbits can be deterred by wire mesh enclosures. Commercial paint-on repellents are also available.