Corteva Pittsburg Crop Protection Manufacturing (Closing)
Pittsburg, CA
Former flagship crop protection plant established 1939 (first Dow facility outside Michigan); produced herbicides, nitrogen stabilizers, fumigants and antimicrobials; ~420 employees + 265 contractors; WARN notice filed March 2026, effective September 2025; exiting production as part of network restructuring (~$750-815M total charges)
Corteva Algona Seed Plant
Algona, IA
Seed corn processing and packaging; Pioneer brand corn seed production for north-central Iowa and upper Midwest markets
Corteva Durant Seed Plant
Durant, IA
Seed production and processing; USDA OECD authorized entity for field inspection; Pioneer brand corn and soybean seed
Corteva Dysart Seed Plant
Dysart, IA
Hybrid bean, wheat and alfalfa seed processing; Pioneer brand specialty seed production
Corteva Fremont Seed Plant
Fremont, IA
Corn, soybean and wheat seed processing; also produces plant, animal and seed inoculants; Pioneer brand and related Corteva seed brands
Corteva Reinbeck Seed Plant
Reinbeck, IA
Seed corn processing and packaging; USDA OECD authorized entity; Pioneer brand corn seed
Corteva Toledo Seed Plant
Toledo, IA
Seed corn processing and packaging; Pioneer brand; plant grows, harvests, processes and packages seed corn for sale to farmers; featured as genetics education site for area schools
Corteva Princeton Seed Plant
Princeton, IL
Pioneer brand seed corn production facility; history dating to 1937; seed processing, packaging and shipping
Corteva St. Joseph Seed Plant
St. Joseph, IL
39-acre corn seed facility operating since 1974; 60 full-time and 60+ seasonal employees; manages all aspects of seed production, packaging and shipping of Pioneer, AgVenture, Brevant, Dairyland, Hoegemeyer, and NuTech brands; 50th anniversary in 2024
Corteva Utica Seed Plant
Utica, IL
Agricultural seed processing and packaging; Pioneer brand corn and soybean seed production
Corteva Plymouth Seed Plant
Plymouth, IN
Pioneer brand seed production since 1989; production, packaging and shipping of corn and soybean seed under Pioneer, AgVenture, Brevant, Dairyland, Hoegemeyer, and NuTech brands
Corteva Rushville Seed Plant
Rushville, IN
Pioneer brand seed production since 1967; described as top packaging plant in Corteva's network; 51 employees; corn and soybean seed
Corteva Tipton Seed Plant
Tipton, IN
Pioneer brand seed production since 1939; corn, soybean, sunflower, canola, and wheat seed packaging and shipping; one of four Indiana seed plants
Corteva Worthington Seed Plant
Worthington, IN
Pioneer brand seed production since 1975; 53-acre site; 63 full-time + 100 seasonal employees; ships to US, Latin America, Asia Pacific, Africa; corn and soybean seed
Corteva Constantine Seed Plant
Constantine, MI
Seed production, conditioning and packaging; predominantly soybean and corn seed for Pioneer and related brands
Corteva Harbor Beach Crop Protection Manufacturing
Harbor Beach, MI
16-acre site; sole Corteva spinosyns fermentation site (spinetoram and spinosad); three manufacturing plants; natural/nature-derived insect management products; part of Michigan crop-protection hub
Corteva Midland Crop Protection Manufacturing (Midland I-Park)
Midland, MI
Corteva's largest manufacturing site globally; produces spinosyns-based insecticides (spinetoram / Jemvelva, spinosad / Qalcova) and herbicides via fermentation; $242M expansion completed 2022 added 50% spinosyns capacity; ~800 employees + 300 contractors
Corteva Jackson Seed Plant
Jackson, MN
Seed bean processing since 1981 (45 years as of 2026); Pioneer brand soybean and corn seed; located in Jackson industrial park; began with 10,000 contracted acres in eastern Jackson County
Corteva Maxton Seed Production Plant
Maxton, NC
Large-volume soybean seed bagging and distribution; listed with Laurinburg-Scotland County Chamber; celebrates 60 years of operation; significant Southeast US seed hub
Corteva Doniphan Seed Plant
Doniphan, NE
Pioneer brand seed corn facility; includes pollinator habitat initiative begun 2019; seed processing and packaging for Plains region
Corteva York Seed Plant (South)
York, NE
Agricultural chemical formulation and seed production; one of two Corteva facilities in York County, NE; supports sustainable food production
Corteva York Seed Plant (North)
York, NE
Second York County seed production facility; Pioneer brand corn and soybean seed processing and packaging
Corteva Grand Rapids Seed Plant
Grand Rapids, OH
Founded 1937 (Peterson Soybean Seeds/Pioneer since 1975); specializes in soybean and corn seed; 63 full-time + 30 seasonal workers; 70-75 million seed units per year; 61,000+ contracted acres; $20M True Bulk system investment; serves Eastern Corn Belt