Grow and maintain healthy, thriving, flowers
Harnois works with you to create the ideal growing environment, whether by designing distinct zones within a single structure or offering a variety of floriculture greenhouse types.
At Harnois, we understand that each crop variety has unique requirements for light, temperature, and humidity. Our floriculture greenhouses are designed to provide a perfectly controlled environment, enabling flower growers to optimize yield, quality, and crop health.

Tailored to the needs of flower growers
Our floriculture greenhouses meet the unique demands of floriculture. Whether growing flowers, ornamental plants, or potted plants, we understand that each producer has specific requirements. Our customized solutions provide an optimal growing environment with precise light, temperature, and humidity controls, ensuring your crops thrive under the best conditions.
At Harnois, we are committed to delivering floriculture greenhouses that align with the goals of each flower grower. By integrating advanced technologies, we enhance quality, productivity, and resilience against climate challenges. Our structures ensure more efficient production and reduce resource consumption, allowing you to grow more efficiently while meeting market demands.
Why choose a floriculture greenhouse?
Buffer Effect
A greenhouse acts as a natural regulator, minimizing temperature fluctuations. The buffer effect creates a stable and optimal environment for flower growth, resulting in more consistent and higher-quality production.
Resource Efficiency
With integrated management systems, a greenhouse optimizes water and nutrient usage, reducing your ecological footprint and operating costs. The AI-driven system leads to more sustainable crops while conserving essential resources.
Weather Resilience
Greenhouses protect flowers from extreme weather conditions such as wind, rain, and sudden temperature changes. Crops remain secure, ensuring steady production regardless of the weather.
Market Access
A greenhouse allows you to start your season earlier and extend your market presence by offering flowers as buds bloom and even into late fall.
Floriculture Greenhouse Project - Maison des fleurs vivaces
La Maison des fleurs vivaces is an exclusive producer and distributor of Sème-Saveurs brand herbs and vegetables (Aliments du Québec). Nearly 2.4 million plants in containers are produced annually at the Saint-Eustache site.
Why Harnois for your next Floriculture Greenhouse?
At Harnois Greenhouses, our floriculture greenhouse systems are engineered to support consistent flower production across all climates. Designed with advanced materials and customizable features, these systems offer reliable growing environments that protect against weather variability, pests, and disease. Whether you specialize in seasonal blossoms or year-round flower crops, our greenhouses provide the right environment to support both quality and quantity.
We understand that commercial growers demand more than just shelter—they need commercial greenhouse solutions that are scalable, efficient, and tailored to the needs of the floriculture market. That’s why every structure we design combines high light transmission, optimal ventilation, and integrated irrigation compatibility to maximize flower crop production. Our greenhouses can be adapted for cut flowers, potted plants, bedding plants, and more.
Sustainability is also a top priority. Our sustainable greenhouse designs reduce energy consumption, improve thermal efficiency, and support environmentally responsible operations. With rising costs and growing climate concerns, we help you maintain productivity while minimizing your carbon footprint.
Our wide range of greenhouse structures for floriculture—from gothic arches to multi-span options—offers the flexibility to meet your crop and operational goals. We also provide support services to guide you through layout planning, heating, and climate control system integration.
With decades of expertise in horticultural engineering, Harnois is committed to helping you grow smarter. Discover how our floriculture greenhouses can elevate your flower business today.
Ready to take your flower production to the next level? Contact us to learn more about the best solution for your greenhouse needs.