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Ontario greenhouse industry faces challenges amid growth potential

Greenhouse production in the province of Ontario is going strong, Ontario Greenhouse Vegetable Growers Executive Director Richard Lee recently told The Packer.

Currently, 170 growers farm about 3,962 acres in the province, and while they experienced a steady 6% annual growth from 2011 to 2021, there has been a slight pause the past two years, Lee said. He estimated that Ontario greenhouse growers contributed about $6 billion to the province’s economy during those 10 years of growth. 

Ray Mastronardi, vice president of sales at Kingsville, Ontario-based Del Fresco Produce, said that volatility has hit in different ways over the past few years.

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Dr. Fei Yang Discusses Corn Rootworm, European Corn Borer, and Pest Monitoring

Video: Dr. Fei Yang Discusses Corn Rootworm, European Corn Borer, and Pest Monitoring

What insect threats are Minnesota corn growers facing, and what research is helping farmers stay ahead of them?

At the 2026 MN Ag Expo, University of Minnesota entomologist Fei Yang shared updates on three Minnesota Corn-supported research projects focused on insect monitoring, seed treatments, and pest resistance.

Current work includes statewide monitoring programs that use pheromone, light, and sticky traps to track key pests such as black cutworm, true armyworm, corn earworm, European corn borer, and corn rootworm. Researchers are also evaluating whether high-rate seed treatments provide effective corn rootworm control and studying the development of resistance in European corn borer populations to Bt corn traits.

These projects help researchers better understand pest pressures across Minnesota and provide farmers with practical information to support informed management decisions.