Manage Your High Tunnels for Long-Term Success
February 27, 2020  |  10 a.m. – 5:30 p.m.  |  La Crosse, Wis.



Julie Grossman, University of Minnesota
Cary Rivard, University of Kansas
Hallie Anderson, 10th St. Farm and Market
Anne Pfeiffer, University of Minnesota



  • Building soil health in your high tunnel
  • Cover crops/nutrient management
  • Salinity/water management
  • Pest management
  • Rotations – accessing the most valuable crops



Nearly 20,000 high tunnels have been built in the U.S. over the past decade. These high-value growing environments require specialized management to maintain productivity and profitability season to season.

In this session designed for experienced high tunnel growers, you’ll learn how organic management strategies and rotation choices can affect soil health, nutrient management, water salinity, and pest pressure in your high tunnels.

Hallie Anderson has been growing year-round in heated and unheated high tunnels on her farm in Minnesota since 2011. University of Minnesota horticulture professor and researcher Julie Grossman is leading a multi-state federal research grant to improve soil health in organic high tunnels. Anne Pfeiffer provides hands-on support for this research. Cary Rivard is an Extension specialist managing the high tunnels program for Kansas State University.

They’ll help you understand the issues involved in high tunnel soil management and offer tools, tips, and tricks you can use to increase the long-term sustainability of your high tunnel production system.


About the Presenters:

Julie Grossman
Julie is with the University of Minnesota Department of Horticultural Science and coordinates the university’s organic program. Her research, teaching, and outreach explores management of plant-soil-microbe relationships to enhance soil fertility in organic systems, especially the process of biological nitrogen fixation in legume cover crops. She is currently leading a multi-state federal research grant to improve soil health in organic high tunnels.

Cary Rivard
Cary was born and raised near Kansas City, Missouri, where his family owns and operates a small, retail greenhouse business. He received his B.S. in agricultural sciences and biology from Truman State University in Kirksville, Missouri. He completed his M.S. and Ph.D. in plant pathology at North Carolina State University as a member of the Integrated Disease Management Lab. Rivard’s graduate research was focused on tomato, but as a student he also worked with several crops, including strawberry, pepper, tomato, and cucurbits, and has experience working and conducting research in high tunnel production systems.

Anne Pfeiffer
Anne provides scientific and technical support for organic agriculture research within the Department of Horticultural Science and the college of Food, Agriculture, and Natural Resource Management (CFANS). Anne oversees research projects related to organic production and works to share research results through educational and outreach activities. Her work has included projects related to organic vegetable systems, cover cropping, urban agriculture, food access and security, and systemic capacity building in the areas of local food supply chain development and value-added processing. Anne has farmed with commercial small and mid-size vegetable and dairy businesses supplying CSA, farmer’s markets, retail, and restaurants.

Hallie Anderson
Hallie Anderson started 10th St. Farm & Market, an extended-season produce farm in Afton, Minnesota, with her mom, Lisa, in 2011. By combining heated and unheated high tunnels, intensive growing practices and a focus on soil management, they harvest fresh produce 12 months out of the year for a four-season CSA, wholesale markets, and a busy farmstand.




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