Why does one plant flourish, whiles its twin just a few feet away droops? Just a touch of a button and this easy-to-read Three- Way Meter accurately measures moisture, light, and soil pH and takes the guesswork out of gardening. No more over-watering … no more guessing whether houseplants or outdoor bedding plants are getting enough light. It even provides phosphorus readings on-the-spot. It’s the multi-talented soil testing tool every gardener needs.