Soil Heating Cables

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Now you can start vegetable, flower, and herb seedlings just like the professional bedding plant growers do. Soil Heating Cables can be used indoors or outdoors in cold frames or g reenhouses. Bury the cables in soil or soil-based mixtures so that no portion of the colored heating section is visible. The cables use 3.5 watts per linear foot. Use 4 linear feet of cable to warm each square foot of planting area. The built-in thermostat automatically activates the cable when the soil temperature drops below 74°F. Complete instructions included. Show more