1) Ready for the wintry weather
If you have limbs and branches over your house, sidewalk or car, you may want to cable, brace or prune them before winter stress causes breakage. If branches are dead, diseased or unsafe, it may be best to remove them.
2) Plan to prune
Although your trees are in the inactive, or dormant, stage of growth right now, it is the best time to prune.
3) Inspect before the ice
When you see your tree is bending or drooping because of snow and ice accumulation, think twice before shaking the branches.
4) Mulch, hydrate and fertilize
Mulching, hydration and proper fertilization are important throughout the year, so head outside while you still have time to get your trees the nutrients they need for the long, wintry months.
5) Prepare prior to damage
Pesky pests, salt and snow damage can make winter unpleasant for your trees, so help them prepare prior to possible damage.
Source: Davey Tree