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Greenhouses for Commercial Growers
Harnois builds high tunnels & commercial greenhouse solutions, creating unique growing environments that provide professional growers with greater predictability.
Designed specifically for commercial growers, our greenhouses combine structural strength, light optimization, and disease-reducing technology to help you achieve better yield, higher quality, and greater profitability — season after season.
With over 60 years of experience and tens of thousands of installations across North America, we’ve earned the trust of professional growers in vegetables, ornamentals, berries, and nursery production. Our four proven greenhouse models offer the flexibility, performance, and longevity required to support modern horticulture — even in the harshest climates.
Our structures are designed to optimize plant performance, streamline operations, and withstand the extreme conditions of the North — from heavy snow loads to short daylight hours.
Every crop has its climate — and every grower has their system. That’s why we tailor every Harnois greenhouse to your specific operational needs.
Our objective: build a controlled environment, adapted to your crops, climate and budget.
Our commercial greenhouse structures
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.
100% North American manufacturing and service
- 60 years of industry experience
- A true turnkey solution: Form design to completion
- Spearheading Greenhouse Innovation in North America
- In-house team of Engineers and Agronomists
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.
For over 60 years, Serres Harnois has been designing, manufacturing and installing structures adapted to the climatic realities and production objectives of growers. As a trusted greenhouse manufacturer, we support horticultural, market-garden and institutional growers with turnkey solutions.
Our engineering know-how, personalized approach and ability to deliver high-performance greenhouses throughout Canada and the United States make us one of the most experienced greenhouse manufacturers on the market.
Explore Recent Projects
From supporting commercial growers to celebrating agribusiness on a global scale, we’re proud to share some of our turnkey greenhouse projects with you.
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