Evergreens will accumulate more snow and ice during weather events in winter, which increases their likelihood of breakage during these storms. Evergreen also transpire water through the foliage on warm winter days, which can lead to desiccation especially if the soil is frozen.
Routine pruning should be performed to promote strong growth habits and to remove poorly attached branches. On plants with multiple stems or poor growth habits, support systems such as cables or temporary wrapping with soft twine can support the plant during the winter.
Ensure that soil is moist before the onset of freezing temperatures. Mulching the root zone of evergreens will conserve soil moisture and moderate soil temperatures that will help reduce the risk of desiccation, or drying out.