Germinate seeds early—without transplanting
Start your vegetable garden several weeks earlier without the worry of frost— just like professional
growers.Built-in thermostat conserves energy by activating only when soil temperature falls below 74 degrees. Simply bury the cable in your soil. Speeds up germination and seedling growth with gentle bottom heat.24' cable covers approx. 6 square feet, 84 watts36' cable covers approx 9 square feet, 126 watts 48' cable covers approx. 12 square feet, 168 watts.