Community Supported Agriculture Shenandoah Valley CSA keeps food dollars in the local community and contributes to the maintenance and establishment of regional food production. CSA supports the biodiversity of a given area and the support of local agriculture through the preservation of small farms producing a wide variety of crops. CSA creates a sense of social responsibility and stewardship of local land. CSA puts "the farmers face on food" and increases understanding of how, where, and by whom our food is grown.