In the Twin Cities area when should winter protection be in place?
Winter protection is necessary when the night temperatures go below 20°F. In the Twin Cities area this is usually about October 15th. Be sure that the winter protection is complete before the first snowfall or it won’t get done. The Halloween snowfall of 12 inches a few years ago caught several rose growers without winter protection. This year (2002) had a later time period but the rapid temperature drop around Christmas probably caught some rosarians without winter protection.