Building Tomorrow's Agriculture with Leading Greenhouse Solutions

Harnois builds greenhouse and large tunnel solutions, creating unique growing environments that provide producers with greater predictability.

+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.

CARBON NEUTRALITY AND ENERGY EFFICIENCY​

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.