Even though it might not seem like it right now, climate change has made winters warmer and wetter. Twenty-five years ago, gardeners could rely on a cold snap around mid-November, when temperatures would stay well below freezing for days. Now these sharp frosts are becoming rare, however temperatures can still plummet very quickly overnight. This can be a problem for semi-tender shrubs, such as pomegranates, olives, bay trees, or citrus grown in containers. These plants are healthiest when left