This Should Not Be Possible
You are looking at several pineapple plants that overwintered in San Jose, Ca. The weather is warm now, but we had some really cold days this winter that were down into the teens. How could these plants have survived? The plants are sitting next to my house. My house is constantly radiating heat….apparently enough heat for the pineapple plants to not only survive, but to thrive!
Keep this in mind next year when have some plants that you want to protect. Now, those of you in the Midwest and East that have had EXTREMELY cold spells will definitely not benefit from this, but those in moderate climates may just be able to capture enough heat to save some of your favorite plants next winter.