“…High tunnels are frequently utilized in local vegetable production throughout the United States (Carey et al., ) and have been adopted by many local vegetable growers in the Central United States (Kansas City Food Hub Working Group, ). This growing system has been successfully used for protection from the weather elements, (Lang, ), increasing yield (Lamont, ; Waterer, ), increasing product quality (Lamont, ; Rogers & Wszelaki ), season extension (Borelli et al., ; Galinato & Miles, ; Gude et al., ) and reducing crop disease (Hanson, Marks, & Isaacs, ; Lang, ; Rogers & Wszelaki ) of fresh fruits and vegetables. Spinach, Spinacia oleracea , is a cold season crop frequently grown in high tunnels in the U.S. Great Plains Area (Knewtson, Carey, & Kirkham, ).…”