High Tunnel Short Course Returns for Iowa Growers

By Andi Anderson

The Iowa State University Extension and Outreach Commercial Horticulture program will host the 2026 High Tunnel Short Course on November 11, 2026, at the Iowa Arboretum in Madrid, Iowa. The event is designed for commercial growers and individuals interested in producing fruit and vegetable crops using high tunnel systems.

High tunnels have become an important tool for specialty crop production. These structures help growers extend the growing season, improve crop yields, reduce pressure from pests and diseases, and better manage water use. As more growers adopt these systems, learning effective management practices has become increasingly important for maintaining profitable and sustainable production.

The one-day course will provide participants with the opportunity to learn from experienced growers, university specialists, and industry experts. Attendees will gain practical knowledge that can be applied directly to their own farming operations. In addition to educational sessions, the event will allow growers to connect with fellow producers and explore the Iowa Arboretum.

According to Dan Fillius, horticulture field specialist for commercial vegetables with ISU Extension and Outreach, the program will offer valuable guidance for growers seeking to improve their production systems. He said, “Growers who struggle to fine-tune their vegetable production will leave this course with new ideas for getting the most out of their tunnels.” He added, "You'll hear practical advice from successful growers in Vermont and Iowa, as well as technical information on tomato fertilizer needs from Judson Reid, a vegetable extension specialist from Cornell.”

The course will feature presentations covering a range of topics related to high tunnel production. Participants will learn about fertility management for tunnel-grown tomatoes, strategies for year-round production in northern climates, tunnel construction tips, and best practices for growing crops successfully within protected structures.

Experts and experienced growers will share their research findings, practical experiences, and recommendations to help attendees overcome common production challenges. These sessions are expected to provide useful information for both new and experienced growers looking to increase efficiency and productivity.

Registration is required for all participants. The registration fee is $10, which includes lunch during the event. The course will take place from 8:30 a.m. to 3:30 p.m. at the Iowa Arboretum, located at 1875 Peach Ave., Madrid, Iowa.

The 2026 High Tunnel Short Course offers a valuable opportunity for growers to expand their knowledge, learn from industry leaders, and discover practical solutions that can improve fruit and vegetable production throughout the year.

Photo Credit: iowa-state-university