Harnois builds high tunnels & commercial greenhouse solutions, creating unique growing environments that provide professional growers with greater predictability.

Brighter by design

Through the years, we’ve built commercial greenhouses with a focus on innovation, sustainability, and efficiency, creating optimal growing environments through smart design and advanced technology.

Redefining the standards of​ CEA

At Harnois Greenhouses, sustainability lies at the heart of every commercial greenhouse solutions we create. We design greenhouses and develop technologies that address today’s needs while preparing for tomorrow’s challenges. Our solutions minimize environmental impact while maximizing productivity, combining innovative technology with durable materials for long-lasting performance.

Our commercial greenhouse solutions provide a sustainable path forward, from energy-efficient designs to materials that optimize natural light and conserve resources. In partnership with growers who share our vision, we are helping to build a resilient agricultural sector, one greenhouse at a time.

Our mission is to enhance predictability, efficiency, and sustainability in agriculture, paving the way for a more resilient future.