Prune damaged roots , Trim excessively long roots to approximately 5 inches in length
After Mowing down the plants, in order to protect strawberries against winter injury, a layer of mulch is recommended. If plants are unprotected, low winter temperatures may kill the fruit buds and damage the roots and crowns.
Alternating freezing and thawing conditions in the spring can cause heaving of the plants. Mulch should be applied before the temperature drops below 20oF (-6oC).
Once the temperature drops below 15oF (-10oC), damage to the plants begins. However, if the mulch is applied too early before the plant growth stops the crowns may rot.
Clean hay or straw make the best mulching material. Do not use tree leaves, as they mat down and smother the plants.