The PlantSmart from Black and Decker has sensors that measure four aspects of proper planting: sunlight, temperature, soil nutrients, and moisture. Simply place it in the garden, then plug it into the computer for a full report on what is best planted in that spot. Stop wondering why some plants don't work, and learn which will.
WaterStik & LiteStik
Never question the health of indoor plants again. The LED light on the end of the Fertile Earth WaterStik flashes after determining the moisture of a houseplant's soil, with a range of colors representing different water needs, from dry to overwatered. The Fertile Earth LiteStik is small, so it fits in any potted plant, and it turns on its bright LED lights when it senses that the natural light source is gone for the day. This one-two punch of light and moisture will keep indoor plants thriving.
Involving electronics in seed starting can seem daunting, but the heat-mat thermostat from Gardener's Supply Company will keep seedlings from burning up. The probe measures soil temperature, turning the mat on and off to regulate the heat. $55 from
5 Best Gardening Apps
Available right now in the iTunes store:
Informational videos, plant information for 15,000 plants, and a database of local retailers make this a gardener's best friend. $.99
Eden Garden Designer
Create a virtual garden by taking pictures of your space and adding digital plants, for fun or planning. $.99
Chirp! Bird Songs USA
More than 200 birdsongs and useful information will delight even the most dedicated bird-watcher. $2.99
Bugs and Insects
The database of more than 900 species ranges from pests to butterflies. $.99
A wide range of information on herbs, including culinary and medicinal uses. $2.99