Swede midge adult (Susan Ellis, USDA APHIS PPQ, Bugwood.org)
Swede midge (Contarinia nasturtii Kieffer) is a pest of cruciferous plants such as cabbage, cauliflower and broccoli. It was first detected in North America in Toronto, Canada, in 2000. It spread to New York in 2004, and was recently found in Minnesota in 2016. Damage caused by swede midge larval feeding ranges from from puckered leaf tissue to plants with blind heads. This page provides links to information sources relevant to Minnesota growers.
Current IPM Practices for Managing Late Season Swede Midge in Minnesota (9/15/2017, U of M, Minn. Dept. of Agric.)
MDA Swede Midge Press Release (8/31/2017, Minn. Dept. of Agric.)
Swede midge Information Center, U.S. (Cornell Univ.)
IPM information on Monitoring, Damage and Management (Cornell Univ.)
Cultural Control is Essential, coupled with Insecticide options (Cornell Univ.)
Swede Midge Biology & Management (Michigan State Univ.)