Each year the Southwest Crop Diagnostic Days invites local 4-H clubs to participate in a 4-H Mini-Diagnostic Night. 2013 marked the largest turnout yet with almost 85 4-H members, leaders and parents attending the program on Thursday July 4. Held on the Ridgetown campus of the University of Guelph, the program attracted field crop, popcorn and some livestock 4-H club members from Chatham-Kent, Lambton, Essex and Middlesex counties. Participants got the chance to view the research plots from tractor drawn wagons while heading to the Diagnostic Night stations. Three stations were featured from the full day Southwest Crop Diagnostic Day program. Greg Stewart of OMAF and MRA presented Corn Physiology: Planting Day to Canada Day, while Dave Bilyea from the University of Guelph talked about Carrot Family Weeds. Victor Limay-Rios discussed Managing Mycotoxins in Wheat and Corn. After 4-H members and leaders had rotated through the three stops the program ended with drinks provided by Southwest Crop Diagnostic Days and pizza courtesy of the clubs attending.