OpenFarm

OpenFarm is a free and open database and web application for farming and gardening knowledge. One might think of it as the Wikipedia for growing plants, though it functions more like a cooking recipes site. The main content are Growing Guides: creative, crowd-sourced, single-author, structured documents that include all of the necessary information for a person or machine to grow a plant, i.e.: seed spacing and depth, watering regimen, recommended soil composition and companion plants, sun/shade requirements, etc. In this Freebase platform, gardeners can find answers to questions like “How do I grow tomatoes?”