Adams, Stacy A. and Kim Todd. 2014. Cold Frames, High Tunnels, and Greenhouses:
Choose a Growing Structure Best for You. University of Nebraska–Lincoln Extension. Accessed at: <http://agronomy.unl.edu/CEA/g2246-coldframesNebGuide.pdf>
Cold Frames, High Tunnels, and Greenhouses: Choose a Growing Structure Best for You comes out of the University of Nebraska-Lincoln Extension and is written by Stacy Adams, Associate Professor of Practice, and Kim Todd, Extension Landscape Horticulture Specialist. This publication is meant to provide market growers and gardeners with information on which growing structure for season extension is best for your operation. It goes over cold frames (the smallest, simplest, and least expensive structure), high tunnels and greenhouses in short detail.