Serres Harnois logo dark
Quote

Harnois: A Leading North American Greenhouse Manufacturer Since 1965

Greenhouse manufacturer: Our background

Founded in 1965 as Irrigation St. Thomas, the parent company of Harnois Greenhouses, Industries Harnois, initially specialized in irrigation systems and agricultural equipment. In 1968, we expanded as a greenhouse manufacturer, and in 1971, under the leadership of Rolland Harnois and Yves Harnois, we designed Quebec’s first gutter-connected greenhouse complex. Throughout the 1970s and 1980s, we dominated the Canadian market by introducing innovative greenhouse technologies, from heating circulation tubes to naturally ventilated greenhouse structures.
 
As our reputation grew, we became, in 1982, the first North American company to use oval tubes in greenhouse manufacturing and coverall buildings. 
 
Today, Harnois Greenhouses continues to offer low to high tech greenhouses all manufacturer in Quebec, Canada. We also create turnkey greenhouse projects and enhance agricultural productivity. We acknowledge that the future of sustainable agriculture depends on creative solutions, and we remain firmly committed to continuously bringing new ideas to the industry.
harnois - Harnois: A Leading North American Greenhouse Manufacturer Since 1965
Elevating the craft of growers

Greenhouse Manufacturer

Our commitment to sustainability is not just a business practice; it’s a philosophy driving us to create a greener, more resilient future for agriculture and beyond.

This commitment extends not only to our clients and the communities they serve but also to our employees. We are dedicated to fostering a diverse and devoted team, supporting our employees and the efforts they make to help us improve.

From cutting-edge designs to environmentally friendly resources and components, every aspect of our operations reflects our dedication to sustainable practices. We recognize the vital role our industry plays in the global ecosystem and actively seek ways to minimize our footprint.

Lean more about Harnois Industries
Our Commitment to Customers as a Greenhouse Manufacturer

Quality is not just our standard—it’s an attitude that defines everything we do.

Our dedication to sustainability is not merely a business practice; it’s a philosophy that drives us to create a greener, more resilient future for agriculture and beyond.

This commitment extends not only to our customers and the communities they serve but also to our employees. We are devoted to building a diverse and dedicated team, supporting our employees, and valuing their efforts to help us improve as a greenhouse manufacturer. 

From innovative designs to environmentally conscious materials and components, every aspect of our operations reflects our dedication to sustainable practices. We recognize the critical role our industry plays in the global ecosystem and are actively seeking ways to reduce our footprint.

Greenhouse Manufacturer

Drawing on 60 years of North American leadership, Harnois Greenhouses combines in-house engineering and agronomic expertise to deliver high-performance, turnkey growing environments. As a greenhouse manufacturer, our capabilities range from custom structural design and precision manufacturing using premium North American steel to complete on-site installation and systems integration. While we are a dominant force across Canada, the USA, and Mexico, we are proud to continue our international growth, now expanding our footprint into Central and South America. By adapting our proven technology, such as our signature oval-tube framing and Gothic profiles, to a wider range of tropical and temperate climates, we empower growers across the Americas to achieve predictable, high-yield results.

Our Involvement in the Community​

Associations

Contact us