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Stretching the Spinach Season

Wednesday, June 6, 2018   (0 Comments)
Posted by: Cindy Slone
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For Immediate Release


LOGAN, UTAH—Stretching the Spinach Season


A recent experiment from Utah State University has honed techniques for growing spinach beyond its ordinary period of production.

Dan Drost, Brent Black, and Taunya Ernst conducted a spinach production trial designed to counteract the conditions present during the winter season that expectedly ends the year’s harvest. The research yielded some success and several notable results documented in the article ‘Soil Heating and Secondary Plant Covers Influence Growth and Yield of Winter High Tunnel Spinach’ published in HortScience.

High tunnels are a low-cost method for growing crops out of season. The researchers investigated the practicality of adding a small amount of additional heat to the rootzone of spinach.

Ultimately they found that this targeted addition of heat, plus the addition of low tunnels or row covers, further extended the benefits of a high tunnel with relatively minimal additional cost.

Drost states, “These relatively simple approaches can significantly increase fall or early spring spinach production and may benefit other cool-season vegetables grown out-of-season in high tunnels.”

The complete article is available on the ASHS HortScience electronic journal web site:

For more information, contact Dr. Dan Drost of Iowa State University in the Department of Plant Soil & Biometeorology at or (435) 797-2258.

Founded in 1903, the American Society for Horticulture Science (ASHS) is the largest organization dedicated to advancing all facets of horticulture research, education, and application. More information at




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