This is an eOrganic article and was reviewed for compliance with National Organic Program regulations by members of the eOrganic community. Always check with your organic certification agency before adopting new practices or using new materials. For more information, refer to eOrganic’s articles on organic certification.
This article was originally published here: http://www.extension.org/pages/18622/organic-vegetable-production-systems-season-extension#.Uvp6afbMdyh