Custom Commercial Greenhouse Designs for Ontario Growers
Harnois Greenhouses provides top-tier commercial greenhouses Ontario’s for diverse agricultural needs. From the rich farmlands of the Niagara region to large-scale operations in southwestern Ontario, our solutions ensure optimal productivity year-round.
Engineered for today’s commercial growers, our durable structures and our greenhouse equipment team help your operation thrives and delivers a quick ROI. Looking to optimize your growing environment? Work with Harnois for tailored expertise and exceptional results. Let’s start building tomorrow’s controlled environment agriculture (CEA)—reach out today!
Whether in floriculture, produce, a garden center, an institution, or you want to transition from open-field farming, Harnois Greenhouses provides the expertise to match you with the perfect turnkey greenhouse solution. Discover our diverse range of greenhouse structures to elevate your growing operation.
Applications for Commercial Greenhouses Ontario
Greenhouse production is one of the most efficient methods for consistently growing fruits, vegetables, flowers, or seedlings. Our commercial greenhouses are designed to boost productivity, improve harvest quality, and increase yields. Each crop has specific requirements for climate, irrigation, and light. Because every plant deserves the best conditions to thrive, our greenhouses are specifically designed to sustainably and efficiently meet the needs of each type of crop. We create environments that allow your crops to flourish, season after season.
Commercial Greenhouse Ontario: Structures for Growers
Key Benefits of Our Commercial Greenhouses Ontario
At Harnois Greenhouses, we offer integrated and comprehensive services to support every stage of your greenhouse project. We provide expertise that aligns with your goals and ensures lasting success.
Commercial Greenhouses Ontario Construction
From design to installation, our team manages the construction of your greenhouse to ensure efficient and robust assembly. We work closely with you to meet the specific requirements of your project, guaranteeing precise implementation and a quick start to your operations.
In-House Engineering Services
Our in-house engineering team, composed of experienced experts, is available to customize plans and optimize every structural detail. We design solutions that meet the highest quality standards while considering the unique needs of each crop and environment.
Integrated Solution Design
Our services go beyond construction, offering integrated project management to coordinate every aspect of your greenhouse. From planning to operation, we ensure all elements are aligned for smooth and efficient functionality. After installation, our team remains available for ongoing support and training to ensure maximum satisfaction and the long-term success of your operation.
Why Choose a Commercial Greenhouses Ontario?
- Compliance with Ontario's building regulations and energy standards.
- Increased productivity and profitability.
- Year-round growing environments.
- Protection against extreme weather and pests.
- Better yield : Higher crop density
- Better product quality and predictability
- Reduced use of phytosanitary products
- Reduced risk of pests and diseases
- Reduced water consumption and fertilizer losses
Good Year Farm
- Greenhouse model : Ovaltech
- Location : Queensville, ON
Good Year Farms is a familiy business owned for over 20 years who produce spring and fall flowers, herbs, vegetable plants and ready plant gardens.
Technical specifications
- 60 freestanding Ovaltech greenhouses 30’ x 301’
- Double 7,2mil poly
More on Commercial Greenhouses Ontario
Commercial greenhouses Ontario are large-scale growing structures designed to create optimal environmental conditions for crop production, regardless of external weather. Engineered to maximize space, light diffusion, and energy efficiency, these structures support a wide range of crops and agricultural practices—from year-round vegetable production to specialty flowers and organic farming. Unlike hobby or backyard greenhouses, commercial greenhouses Ontario are built for durability, scale, and profitability.
Commercial greenhouses serve multiple industries and growing objectives, including:
Horticulture and Floriculture: Ideal for growing flowers, ornamental plants, and nursery products.
Vegetable and Fruit Production: Allows for controlled cultivation of tomatoes, cucumbers, peppers, strawberries, and leafy greens.
Organic Farming: Offers a protected environment to meet organic certification standards.
Research and Education: Used in academic institutions for controlled experiments and teaching.
Pharmaceutical and Cannabis Production: Enables precise climate control for high-value crops requiring strict regulation.
These greenhouses can be tailored to fit both high-tech and low-tech growing models, with options for automation, climate zones, and renewable energy integration.
At Harnois, we use only high-quality components that ensure performance, longevity, and ease of maintenance:
Galvanized Steel Frames: Engineered for snow and wind loads in North American climates, with optional hot-dip galvanizing for maximum corrosion resistance.
High Light Transmission Coverings: Choose from multiwall polycarbonate or high-performance polyethylene film to enhance photosynthesis while reducing heat loss.
Ventilation Systems: Natural ridge vents, sidewall roll-ups, and mechanical fans maintain airflow and reduce humidity.
Shading and Climate Curtains: Optimize light levels and temperature to reduce energy costs and boost crop yield.
Irrigation & Fertigation Systems: Integrated solutions for precise water and nutrient delivery.
These components are customizable based on your crops, climate, and automation needs.
Choosing a Harnois commercial greenhouse brings a host of operational and financial advantages:
Year-Round Production: Extend the growing season or produce crops continuously, regardless of outdoor conditions.
Increased Yields: Controlled environments lead to healthier plants and higher productivity per square meter.
Reduced Input Costs: Optimized irrigation, energy use, and climate control lower water, fertilizer, and heating expenses.
Improved Biosecurity: Protect crops from pests, diseases, and contamination.
Faster ROI: Reliable structures and efficient systems help you reach profitability sooner.
Our commercial greenhouses Ontario are designed to evolve with your business, offering expansion-ready structures and scalable technologies.
Commercial Greenhouse Structures by Harnois
Harnois offers a complete line of engineered commercial greenhouses Ontario —from intensive year-round production to seasonal or organic crops. Each structure is built to withstand Canada’s climate and is supported by our in-house engineering team.
Vermax Glass Greenhouse
Our flagship model for high-performance crop production. Designed for year-round growing and Nearly Zero Energy Building (NZEB) compliance, the Vermax combines advanced energy management, thermal recovery, and climate control in a modular, scalable structure.
Ovaltech Freestanding Greenhouses
Durable and cost-effective, Ovaltech greenhouses are ideal for diversified vegetable or berry production. Their galvanized oval-tube frames offer excellent snow and wind resistance, and the freestanding design allows for maximum layout flexibility.
Luminosa Gutter-Connected Greenhouses
Perfect for large-scale commercial operations, Luminosa greenhouses offer wide spans, excellent light transmission, and efficient gutter-connected design. Easily expandable and compatible with full climate automation systems.
TunnelPro Plus High Polytunnel Greenhouses
A smart solution for soft fruit producers, nurseries, or seasonal crops. TunnelPro Plus models combine affordability with engineered strength, making them ideal for growers seeking simple, relocatable structures with exceptional ventilation and light performance.