North Dakota is a state known for its cold, harsh winters. In such extreme conditions, it is a wonder of nature to observe the trees and plants sprouting new growth in the springtime. While most plants are capable of surviving winter naturally, young plants and some non-native species do require additional help and protections for a complete recovery. The process of protecting a plant for winter is known as winterizing.
Cover low-lying plants such as baby's breath and delphinium with evergreen branches. The branches act as a mulch to keep the ground temperature even, but still allow sufficient sunlight to enter the area for fresh sprouts.
Bury roses in a mound of dirt 10 inches high and cover them with an inverted basket.
Warm large trees using incandescent bulbs. Old Christmas lights are an excellent option, as they can be strung inside the tree's branches and will produce a high level of warmth of the tree's tender branches.
Cover low and medium hedges with bedsheets when a frost is predicted. Do not allow the bedsheets to make contact with the plants, however, and always remove them as soon as the threat of frost has passed.