What if the temperature gets 40 45 degrees during the day but freezes at night should they be covered or no..strawberry plants plant went ed bright green to a dull green and a red color or rust.
Anoka County Minnesota
The following excerpt from a University of Minnesota bulletin answers your question:
"After the plants have entered dormancy due to cold temperatures, and the temperatures are staying below 40°F, straw mulch should be applied about 4 to 6 inches over the top of the plants. This mulch will protect the plants from extreme winter cold so they will emerge again next spring. Remember, most day neutral cultivars are not quite hardy enough to over-winter in Minnesota, but it may be worth a try. Cover these with straw just as you would June-bearing cultivars."
Given recent conditions in the Twin Cities area, it's OK to cover strawberries now.