- Rough Brothers Inc.
 - Design, manufacture, and construction of greenhouses of every type for commercial, institutional and retail use. Also restores conservatories. - International Greenhouse Company
- Offers commercial and hobby greenhouses, equipment, and supplies.
- Farm Wholesale Greenhouses
- Manufacturer of greenhouses and accessories for gardeners and growers.
 Harnois Industries Inc.
- Multinational manufacturer of horticultural greenhouses and equipment, irrigation and snowmaking equipment.- Siebring Manufacturing
- Manufacturer of commercial greenhouse equipment and sprayers, gas and oil heaters, and soil sterilization and pasteurizing equipment.
- Clayton Hill Greenhouse Company
- Designs, constructs, and installs custom greenhouses and conservatories for commercial and residential uses nationally.
- Hobby Gardens
- Manufacturers of greenhouses and accessories for the hobbyist and commercial grower.
- National Greenhouse Manufactures Association
- A professional trade organization for the manufacturers and suppliers of greenhouses and their components.
- Beijing Fenglong Agriculture Technology Co.
- Supplies greenhouse construction materials such as plastic lock systems, profiles, covering materials, cooling and shading systems, and polythene film.
- Van Wingerden Greenhouse Company
- Manufacturing greenhouses for commercial use.
- Agro Dynamics
- Importer and distributor of products, services and system solutions to the professional horticultural greenhouse industry and the hobby grower market.
- TrueLeaf Technologies
- Provides horticulture environment systems for greenhouses.
- Nexus Greenhouse Corporation
- Manufactures greenhouse structures and equipment for domestic and international markets in commercial, retail, and institutional greenhouse facilities.
- Soli, Ltd.
- Specializes in greenhouse turn-key projects as well as vegetable seed production.
- Agra Tech, Inc.
- Specializes in commercial greenhouses.
- Poly-Tex Inc.
- Manufacturer of retail/commercial greenhouse structures both temporary and permanent.
- Wadsworth Controls
- Makes electrical and electronic controls for greenhouses.
- Van der Hoeven Group
- Provides Venlo greenhouse construction, including heating systems, screening, and packing areas.
- Morris Polythene Greenhouses
- Manufactures standard and vertical single span polythene tunnels and glasshouses.
- Dagan Agricultural Automation Ltd.
- Manufacturers of automation in greenhouses, and heating and irrigation systems.
- Faber Glasshouses
- Constructing glasshouses for the commercial sector. Delivered and assembled throughout New Zealand and the world.
- Greenway Blooming Centre
- Retail garden centre and wholesale grower of plants.
- Oregon Valley Greenhouse & Structures
- Multi-purpose greenhouses for nurseries, growers and farmers.
- Greenhouse Canada
- Online version of the magazine geared towards the Canadian greenhouse industry.
- Grow-It Greenhouses
- structures for residential, agricultural, horticultural, and industrial growers.
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