The Black & Decker PCS10 Digital Plant Care Sensor makes gardening and taking care of plants both easy and fun. Obviously, your gardener is going to be hopping mad that a pesky little sensor has made him obsolete. If you can handle that, the PCS10 is a versatile tool with sensors for sunlight, temperature, moisture and soil quality. In the “Recommend” mode, it’ll tell what kind of plants can grow in the soil. In “Monitor” mode, it’ll give you suggestions for improving plant health. In “Water” mode, it tells you instantly if the plant needs water. Otherwise, you just stick it into the soil and leave it for 24 hours. After that, the top part comes off and you can hook it up to your computer using a USB cable to get all the feedback.