Images of Phytophthora and Downy Mildew in vegetable and cucurbit crops

Vegetable Growers are invited to attend one of three workshops focused on phytophthora and downy mildew.

Phytophthora blight in vegetables and other cucurbits is complicated by the fact that downy mildew may also be a problem. While similar in some ways, Phytophthora blight is different from downy mildew in a number of ways. Phytophthora movement through the air is limited, unlike downy mildew. Phytophthora survives over winter and thrives in hot weather, whereas downy mildew thrives in cooler weather. Phytophthora has to be introduced into a field, usually by contaminated water or movement of soil. Both Pytophthora and downy mildew can cause tremendous damage.

Attend these workshops to learn:

  • the latest on disease biology
  • research-based management strategies


$35 per person, includes light morning refreshments and lunch.

Dates and Locations

January 23, 2019 - Southwest Michigan Research and Education Center, 1791 Hillandale Road, Benton Harbor, MI 49022 (Fresh-Market Vegetables)

Learn the latest on disease biology, spread and control for fresh vegetable producers. Our special guest Dr. Gary Vallad of the University of Florida’s Gulf Coast Research and Extension Center has extensive experience with Phytophthora and cucurbit downy mildew in fresh vegetable plasticulture production. He will join Michigan State University’s own Dr. Mary Hausbeck for this workshop.

February 14, 2019 - Saginaw Valley Research and Extension Center, 3775 S. Reese Road, Frankenmuth, MI 48734 (Pickling Cucumber)

Learn the latest research-based strategies for managing cucurbit downy mildew and Phytophthora capsici in pickling cucumbers. Our special guest Dr. Lina Quesada-Ocampo of North Carolina State University--a national leader in research on cucurbit downy mildew-will partner with Dr. Mary Hausbeck to give an in-depth overview of the biology and control of these devastating diseases.

RESCHEDULED: March 5, 2019 - Oceana County MSU Extension, 844 S. Griswold St., Suite 400, Hart, MI 49420 (Winter Squash and Zucchini)

Get a gameplan for managing Phytophthora rot in zucchini and winter squash. Our special guest Dr. Chris Smart of Cornell University will team up with Dr. Mary Hausbeck to share real-world management strategies for this disease based on years of research on Phytophthora-infested ground.

Photos above courtesy of Dr. Mary Hausbeck, MSU and Dr. Gerald Holmes, California Polytechnic State University at San Luis Obispo


5 RUPs, 4.5 CCA CEU credits will be available for each location.

Download Draft Agenda -Scroll through to find Preferred Date


Michigan State University is committed to providing equal opportunity for participation in all programs, services and activities. Accommodations for persons with disabilities may be requested by contacting the event contact two weeks prior to the start of the event. Requests received after this date will be honored whenever possible.

Contact Information

For more information contact ANR Event Services at or 517-884-7081.