After a somewhat unsuccessful and rather expensive attempt at warming a greenhouse, electrical engineer Dr Craig Hollabaugh rigged up a system that keeps the winter chill away by warming the roots of his plants. The WarmDirt system has already helped his plants survive the coldest of Colorado's cold months, and is now getting ready to provide warmth to seedlings during the expected April freeze. This past season's survivors were all flowers but next winter, the setup will be used for growing veggies. .. Continue Reading
WarmDirt keeps plants' roots frost-free