Membership in Certified Greenhouse Farmers requires that each individual greenhouse be certified by NSF International to the Certified Greenhouse Standard.  If an operation fails to meet the Standard, product from that individual greenhouse cannot be labeled as "Certified".  Nearly 50 greenhouses market their vegetables through our members.  You'll find the Certified Greenhouse seal on greenhouse vegetables marketed by:
Farms Backyard Farms  
Backyard Farms operates 42-acres of greenhouse space in Madison, Maine, providing the Northeast with the freshest, best-tasting tomatoes possible year round. The company believes in taking care of its employees, giving back to local communities and treating the earth with respect. This means practicing heat, soil and water conservation, ensuring packaging is 100% recyclable and using other recycled materials when possible – and the company is continually looking for ways to improve. When it comes to quality, there is no compromise. The company’s tomatoes are left on the vine to ripen as long as possible, and are shipped within just a day of harvest, creating a tomato bursting with flavor.


Houweling's Tomatoes Houweling's Tomatoes
Houweling's Tomatoes is a family owned, world-renowned greenhouse tomato grower with facilities in Camarillo, Calif. Delta, British Columbia, and is expanding to Utah. Founded by Cornelius Houweling and now led by his son Casey, Houweling's is dedicated to delivering a full complement of scrumptious tomatoes, while constantly innovating to reduce its environmental footprint.

Nature Fresh Nature Fresh
In every task the company performs – as growers, packers, shippers and distributors – it maintains the highest commitment to uncompromising freshness and superior quality, meeting the standards of its valued customers. Nature Fresh’s dedicated team upholds values of quality, integrity and exceptional service in all aspects of the company’s operation. Nature Fresh is famous for growing, supplying, shipping and distributing Ontario-grown Nature Fresh produce.

SunSelect Produce
SunSelect is a family run business that operates 70 acres of greenhouses in both Aldergrove and Delta, British Columbia, and is expanding to California. This family farm, which began in 1985 by the Krahn family, is now one of the largest greenhouse bell pepper producers in North America. The business has been a family affair from its inception. The farming tradition, experience and work ethic has been passed down for generations and contributes to SunSelect’s commitment to the excellence and quality of the peppers, tomatoes and cucumbers the company produces for families across North America.   

Village Farms Village Farms
Village Farms leads the industry as premier grower and marketer in North America of branded, finest quality, hydroponic greenhouse-grown produce. The grower’s great-tasting, fresh vine ripened tomato, bell pepper and cucumber varieties are handpicked at the peak of flavor. The company works to exceed customer expectations through its unparalleled commitment to quality produce, food safety standards and sustainable growing practices utilizing leading edge environmental stewardship principles. Village Farms’ Hydroperfect® growing methods produce vegetables 365 days a year that are healthier for people and the planet. At Village Farms, the company motto is “we know what is good for the earth® is also good for business™.”

Windset Farms Windset Farms
Feeding people the freshest and most flavorful produce possible is what Windset Farms does best – a simple idea that drives a complex process. Windset Farms™ has been delivering fresh, beautiful produce to consumers for more than a decade, using state-of-art technology, responsible growing practices and a gentle hand. Each year, this grower packs and ships countless pounds of premium quality produce throughout North America. Chances are good that if you eat your veggies, you’ve eaten Windset at least once.