When planting, you must know what plant is best for your soil. This is to achieve the best out from your plants. This analysis can be done by bringing some amount of soil to your local Department of Agriculture office. However, today, do it no more. Garden Gro Sensor is now available for doing such analysis. Garden Gro Sensor is a plant sense product that will do computerized soil analysis. All you have to do is to connect the sensor to your computer and instruct it to whether monitor an existing plant or analyze the soil for a new plant. Connect the sensor to a soil next to the plant you wanted to monitor.
Source : Plant Sense via CoolHunting