There is little information available as to the effects of extreme winter cold on the asparagus crop.However, recent research at the University of Guelph is helping to better understand the impacts of fall and spring freeze events on asparagus growth and development. From these studies, it appears that fall senescence and springtime freeze-thaw fluctuations, may be more important factors for winterkill than the actual winter temperature lows.The subject of winterkill in asparagus is a difficult one to address. Unlike many fruit trees where the buds can be assessed for damage, there is no reliable way to evaluate the full impact of cold temperatures on the crowns in a commercial setting.
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