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

  • Cannabis Greenhouse

    Best Photoperiod for Growing Plants

    Colin Clark, Technical Horticulturist •

    There seems to be some debate about whether plants will grow better under 24hrs of light, and today we're breaking...

  • How To Maximize Produce Profits at Farmer’s Markets and Retail

    CropKing • May 19, 2021

    The Covid-19 pandemic hasn’t seemed to curb our appetites or enthusiasm for fresh vegetables. In fact, trend...

  • Careers in hydroponics

    Take a Virtual Greenhouse Field Trip with CropKing!

    Dave Langlois • June 28, 2020

    School may be out for the summer, but that doesn't mean learning has to stop! CropKing has partnered with EarthEcho...

  • The Importance of Tissue Sampling

    CropKing • November 11, 2019

    Tissue analysis is an important tool in helping to understand exactly what is happening in your plants. As the year...

  • Understanding Hydroponic Leachate

    Colin Clark, Technical Horticulturist • August 05, 2019

    Having a firm understanding of what is going into your plants and what is coming out of your plants is one of the...

  • 5 Horticulture Terms You Should Know

    CropKing • July 25, 2019

    You might be familiar with terms such as bolting or cutting as it relates to horticulture, but what about apical...

  • Recirculating vs. Drain-to-Waste Hydroponic Systems

    CropKing • June 26, 2019

    CropKing hydroponic systems can be placed into two broad categories: drain-to-waste and recirculating. A drain-to...

  • Sprayer Maintenance and Calibration, Part 2

    CropKing • April 22, 2019

    In the second part of the spray series, we’re covering sprayer calibration. Hopefully this is something that you’re...

  • Handheld, Backpack and Air-assisted Sprayers

    CropKing • March 11, 2019

    Spring is in the air, which means it's spray season here at CropKing! In order to combat pests, disease causing...