While it may seem like a simple tool, I’ve recommended this Mosser Lee Soil Master moisture, light, and pH meter more than any other garden tool. The soil in my property ranges from solid clay to sandy, with several amended beds. These soil types hold moisture differently and never have the same watering needs. This tool takes away the guesswork. You simply stick the metal prongs into the soil and read the meter. It also measures soil pH and light, the latter of which is great for siting houseplants indoors. This is a particularly great tool for giving beginning gardeners the confidence they need to stop worrying and enjoy gardening. 

—Kimberly Toscano is a horticulturist based in Stillwater, Oklahoma. She is the previous host of Oklahoma Gardening, a weekly PBS television program.

Source: homedepot.com 

Price: $10.08