Building Tomorrow's Agriculture with Leading Greenhouse Solutions
+60
years of experience in creating greenhouse projects.
+10 000
greenhouses installed worldwide.
+20
patented technologies.
+30M
sq. ft. of agricultural production area.
Redefining the standards of controlled environment agriculture
By reimagining established concepts, we design structures and technologies that anticipate tomorrow’s needs. Our iconic innovations, such as the gothic profile, embody this mission every day. Each of our greenhouses maximizes natural light, creating optimal growth conditions while enhancing predictability. With Canada’s first glass greenhouse, we merge carbon-neutral technologies with adaptability, delivering more than just a structure—a sustainable vision for agriculture.
Solutions that inspire and shape the future of agriculture.
Patented technologies for a sustainable future
At Harnois Greenhouses, sustainability lies at the heart of every structure we create. We design greenhouses and develop technologies that address today’s needs while preparing for tomorrow’s challenges. Our solutions are crafted to minimize environmental impact while maximizing productivity, combining innovative technology with durable materials for long-lasting performance.
From energy-efficient designs to materials that optimize natural light and conserve resources, our greenhouses provide a sustainable path forward. 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.
Reducing water usage
Increasing our use of eco-friendly materials
Decreasing energy consumption
The global leader in turnkey greenhouse solutions
Whether you’re a market gardener, flower grower, or researcher, our turnkey greenhouse projects can be customized to meet your specific needs. With over 10,000 greenhouse projects completed worldwide, we deliver unmatched expertise and reliability.
About Harnois Greenhouses
Since 1965, Harnois has been developing and building high-quality glass and plastic greenhouses for producers.
Our commitment to innovation has resulted in a range of greenhouses offering high light transmission and increased air volume, ensuring greater predictability and optimized yields. The superior quality of our structures and components ensures a long lifespan, providing a positive return on investment for every Harnois greenhouse. These strengths have built our reputation on quality and durability – a pride we carry forward.