Check your soil temperature before setting out your seedlings safely with this easy to read dial thermometer. No more guess work; simply insert the 6.5″ probe into the soil to a depth of 2-3″ and check the temperature recorded after 3 minutes. The easy to read dial in scaled from 30-90 degrees F. It has a corrosion resistant aluminum body and includes guidelines on the minimum temperature to plant out the most common vegetables.