Harnois
Manufacturer of free standing and cold frame greenhouses.
http://www.harnois.com

Haygrove Tunnels Ltd
Producers of soft fruit and tunnel type greenhouses. Includes a company background, details of systems, and employment information.
http://www.haygrove.co.uk/

Richel Serres de France.
Manufacturer of polytunnels and greenhouses. France.
http://www.richel.fr/

Priva
Manufacturer of greenhouse environmental control equipment and technology, including sensors, water treatment and fertilizer injection systems, data processing devices, CO2 generators, and fans.
http://www.priva.ca

Bartlett Instrument Company
Producer of greenhouse environment controllers in Iowa presents its product range. Also offers temperature controllers for ceramic kilns.
http://www.bartinst.com

Herbert Holland
Exports greenhouse equipment from the Netherlands. Company profile.
http://www.iasa.nl

Azrom Greenhouses
Design, engineering and production of greenhouses for many crop requirements and climatic conditions.
http://www.greenhouse.co.il/

Sadot Irrigation Systems
Makes and supplies irrigation and fertiliser application systems for glasshouse systems.
http://www.sadot-irrigation.com

Van Wingerden Greenhouse Company
Commercial greenhouses and greenhouse systems, custom engineered and installed to make any site more productive.
http://www.van-wingerden.com/

B.C. Greenhouse Builders Ltd.
Canadian manufacturer of polycarbonate and glass hobby greenhouses. Includes brochure and dealer information.
http://www.bcgreenhouses.com/

Alitex Limited
Offering traditional designs. Includes product and brochure information.
http://www.glasshouses-greenhouses.com

Atlas Greenhouse Systems, Inc.
Growing structures including greenhouses, cold frame hoop houses, roll up curtains, and accessories.
http://www.atlasgreenhouse.com/

Clayton Hill Greenhouse Company
Designs and installs custom greenhouses and conservatories for commercial and residential use nationally.
http://www.claytonhill.com

Conley's
Manufacturer of commercial, institutional, and residential greenhouse structures and related products.
http://www.conleys.com/

DeCloet Greenhouse Mfg. Ltd.
Commercial glass and poly covered greenhouse manufacturer. Distributes throughout USA and Canada. [Does not work in all browsers, best viewed in IE.]
http://www.decloetgreenhouse.com/

Garden Under Glass
Distributor of greenhouses, solaria, conservatories, and skylights. Offers standard and custom units.
http://www.gardenunderglass.com/

Grecon Construction Ltd.
Offering greenhouses, replacement glass, shade and heat retention systems. Includes employee and project information.
http://www.grecon.ca

Imperial Systems, Inc
Offers solar optic greenhouses made from fiberglass.
http://www.solaropticgreenhouse.com/

Siebring Manufacturing
Manufacturers of commercial greenhouse equipment including oil and gas heaters, sprayers, soil sterilization, and high pressure washers.
http://www.siebringmfg.com

Sturdi-Built Greenhouse Mfg. Co.
Manufacturer of redwood and glass kits, and accessories. Many sizes and styles in attached and free-standing versions.
http://www.sturdi-built.com/

TrueLeaf Technologies
Featuring an array of heating systems designed for use in greenhouses. Includes product specifics and tech support.
http://www.trueleaf.net

TrueFog, USA
Design, service, and installation of greenhouse cooling and humidification systems. Complete component parts including mist and fog nozzles, pumps, and fogline.
http://www.truefog.com/greenhseinfo.html

CMF Group
Design and production of plastic covered greenhouses for horticulture, market gardening, stock breeding and various other agricultural applications.
http://www.cmf-groupe.com/

Schaefer Ventilation
Ventilation and circulation fans for the greenhouse industry.
http://www.schaeferfan.com/Horticultural_Ventilation_C264.cfm

Horizon-Orgil
Designer and manufacturer of shadehouses, tunnels, greenhouses, and irrigation system structures.
http://www.horizon-orgil.com/

Halls Garden Products Ltd.
Manufacturer of a range of models of do-it-yourself-assembly hobby greenhouses. List of international distributors available on site.
http://www.hallsgardenbuildings.com/