> Maybe if I run two cables. One underground for the roots and one on > top of the > ground for the leaves. Hmmm.... I've got to think about this. I know > that I will try something, and then try to improve on it each year. Hi Stan... Why not place a mesh under your plant's roots and pass an alternating current through the plant to an electode at the tip. In this way the plant's resistance to electricity would express itself as heat evenly distributed through the roots and stem. Simply increase or decrease the current until the desired temperature is reached. Regards Ian Gill Westland New Zealand.