The Garden Compass App allows you to take a photo of a plant, disease or pest and submit it to a team of Garden Advisers who will identify it for you, as well as provide you with specific product recommendations to resolve any problems you may have. FREE
This planning tool helps gardeners know when to sow, transplant and expect to harvest vegetables and herbs specific to their region. A recent addition is that the app now includes annual flowers in the database of plant listings. FREE
Leafsnap, an app created by researchers from Columbia University, University of Maryland and the Smithsonian Institution, allows users to take a picture of a leaf then use the app to help identify the species. FREE
This app allows users to submit digital photos to a university diagnostic lab for identification of plant diseases or pests. FREE
A smart phone app specifically for rose lovers, Our Rose Garden features information about roses, how to plant and prune them as well as how to overwinter your favorites. Created by the University of Illinois Extension, this app also includes a gallery to track favorite roses and includes several videos about rose care.