Some plant parts are more susceptible than others. Tropical indoor plants are prone to low temperature injury both in the home and while in transport. Cold injury symptoms usually show up as a blackening of the tissues and typically don't appear until a week or more after the injury has occurred. In the fall cold hardiness first occurs in the terminal buds. The last tissue to achieve cold hardiness are the branch crotches.
Roots are more sensitive to cold injury than the above ground parts of a plant.
This can be a problem for container plants in the winter. In the spring , the buds lose their cold hardiness first. Late frosts often damage the fruit buds of peaches, cherry, apricots, and strawberries. The damage from cold will kill the least hardy tissue with a recognizable pattern. Frost damage to conifer needles will uniformly kill all needles of a given age from the tip of the needle to a given point.frost cracks will occurs on the main trunk of plants on the southwest side.