These plants survive in Minnesota because soil temperatures normally are much higher than air temperatures and because soil cools down much more slowly than the air temperature. Roots of most trees and shrubs that grow in Minnesota die at temperatures at or below 0 and up to 10 degrees F. Roots do not become dormant in the winter as quickly as stems, branches and buds. Dry conditions going into the winter can make plant tissues more susceptible to cold damage, especially on evergreens.Snow cover insulates plants from wind and sub-zero temperatures.Wind can dry out plants, especially evergreens.The weight of snow and ice can break branches.Extreme winter conditions such as ice storms, wind and prolonged sub-zero temperatures.Much of Minnesota is located in USDA cold hardiness zones 3 (-40 degrees F) and 4 (-30 degrees F).Lack of plant hardiness and inability to survive extreme cold.Here are steps you can take to protect trees and shrubs and minimize injury. Winter food shortages force rodents and deer to feed on bark, twigs, flower buds and leaves, injuring and sometimes killing trees and shrubs.Salt used for deicing streets, sidewalks and parking lots is harmful to landscape plants.Snow and ice can break branches and topple entire trees.
injure or kill branches, flower buds, and roots.Winter sun, wind and cold temperatures can.Minnesota's harsh climate can cause severe damage to landscape plants.
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