Web Soil Survey
Web Soil Survey (WSS) provides soil data and information produced by the National Cooperative Soil Survey. It is operated by the USDA Natural Resources Conservation Service (NRCS) and provides access to the largest natural resource information system in the world.
NRCS has soil maps and data available online for more than 95 percent of the nation’s counties and anticipates having 100 percent in the near future. The site is updated and maintained online as the single authoritative source of soil survey information.
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For step by step instruction on using Web Soil Survey to find Tree and Shrub Suitability Groups and/or Web Soil Survey to find Productivity Index
Soil Web is another website that will quickly and easily provide Soil Series information.