Hydroponic & Greenhouse Solutions

greenhouse interior, growing lettuce
High-Quality Hydroponic Products and Superior Technical Support to Help Growers Succeed

Since 1982 we’ve grown to become one of the largest manufacturers and distributors of commercial greenhouse structures and equipment, hydroponic systems, and growing supplies, with customers throughout the United States, Canada, Mexico, Europe and the Caribbean.

Blog posts

  • Cultivate15

    CropKing • July 20, 2015

    Cultivate’15 is in the books and what a great show it was. This convention was aimed at growers, breeders and...

  • What is Hydroponics?

    Roger Marshall • June 18, 2015

    Hydroponics is the art and science of growing without soil. The term was first coined by William F. Gericke around...

  • CropKing at Cultivate

    CropKing • June 12, 2015

    As you may know, the Cultivate'15 agricultural conference is fast approaching and with a record number of attendees...

  • Nutrient Solution Management in Recirculating Systems

    CropKing • November 07, 2014

    In recirculating hydroponic systems producing leafy crops, one of the main factors in the control of the grower is...

  • Cucumber Production- An Overview of OH numbers in 2013 and 2014

    CropKing • October 21, 2014

    Overview and Data Considerations

    This data covers a couple of years of data (2013, 2014). So, the goal is to...

  • Summer 2014 Oakleaf Trial

    CropKing • September 12, 2014

    Seeding was done by hand into pre-moistened 1” x 1” x 1 ½” cubes of three different media (Grodan 200 ct rockwool...

  • Branching out with Brassicas - Summer trial in NFT production in Ohio

    CropKing • August 04, 2014

    In the greenhouses that I visit and crops I discuss with growers, it is clear that lettuce still fills a majority...

  • 2014 Tomato Trials- Summer Sneak Peak

    CropKing • June 12, 2014

    For many of the producers that we serve, beefsteak tomatoes are a large majority of their production. However...

  • Dealing with a Rexless Summer?

    CropKing • May 12, 2014

    For growers, there exists something of a codependent relationship between them and their cultivar of choice. Due to...