How to Winterize a High Tunnel Greenhouse (Step-by-Step Guide)
Summary To winterize a high tunnel greenhouse like the Tunnel Pro Plus, choose a dry, wind-free day and work with a team of 4–8 people. Loosen but do not remove the straps, detach the poly at the end arches, and set up lifting straps (about one per 50 ft). Attach the poly to a tube, […]
Commercial High Tunnel Strawberry Production
Quick summary Commercial high-tunnel strawberry production using elevated bench systems offers growers a more predictable, higher-quality crop than open-field cultivation. These structures extend the season, improve fruit quality, reduce disease risk, and can yield $100K+ per acre annually once optimized. The upfront investment is larger, but payback can arrive in as little as 1-4 years […]
Richard Lee Warns of Mounting Policy Pressures on Ontario Greenhouse Growers
Greenhouse Success Stories Podcast sponsored by Harnois Greenhoues – Episode 3 The greenhouse vegetable sector in Ontario, home to thousands of acres of production and a vital part of Canada’s food-supply chain, is facing unrelenting policy and regulatory pressure. As Richard Lee, Executive Director of OGVG, emphasizes, these pressures are creating a rising barrier for […]
Mentoring as a Solution to Greenhouse Labor Challenges
Greenhouse Success Stories Podcast sponsored by Harnois Greenhoues – Episode 2 Across North America, growers continue to face a persistent and costly challenge: greenhouse labor shortages that affect productivity, crop quality, and long-term operational stability. Whether you operate a commercial greenhouse, a research nursery, or a specialized production facility, finding and retaining trained workers has […]
Building A Greenhouse In Alberta: Gabriel Forero on Leadership, Learning, and Growing Through Change
Greenhouse Success Stories Podcast sponsored by Harnois Greenhoues – Episode 1 In a recent feature by iGrow News, veteran grower Gabriel Forero shares his journey of building a greenhouse in Alberta, reflecting on leadership, staff development and adapting to change. Having begun his career managing open-field crops in Colombia (potatoes, lettuce, carrots and more), Forero […]
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Why choose Harnois as your commercial greenhouse manufacturer?
Choosing a greenhouse manufacturer with installation and service is more than just about the structure. It’s a strategic decision that impacts the performance of your agricultural business, your peace of mind, and the longevity of your investment. At Harnois, we support market gardeners, horticulturists, and nursery operators—whether you’re running a small farm or managing a […]
Harnois Unveils 1st Vermax Project at VegPro International
A Bold Step Toward Sustainable Food Autonomy: VegPro Unveils Vermax Glass Greenhouse in Sherrington On April 30, 2025, VegPro International officially inaugurated its new 5.2-hectare Vermax glass greenhouse in Sherrington, Quebec—an ambitious, forward-looking project built in close collaboration with Harnois Greenhouses, a leading Canadian manufacturer of turnkey greenhouse solutions. This $135 million investment reflects a […]
Growers Are Choosing a Cannabis Commercial Greenhouse
For growers interested in entering or transitioning to cannabis production, one of the first decisions to make is where it will be grown. Options include outdoor, indoor facilities, and a mix of the two, greenhouses. Greenhouses are growing in popularity among cannabis growers. In fact, many cultivators are switching to greenhouses since they are usually […]
Cannabis Greenhouse Projects: Why Preparation Matters
Are you thinking about embarking on a new growing project but with no idea of where to start? It’s best not to jump into a new project without completing the necessary steps to ensure you have the best plan in place. Rather than attempting to grow immediately, any prospective grower should follow some preliminary steps […]