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.

lettuce plants lined up in a row
Controlled Environment Agriculture Specialists

CropKing emphasizes service, quality, and competitive pricing, and is the only company in the U.S. that offers a full range of services to its growers. From monthly 2-Day Grower Workshops, Grower’s Manuals, Training Videos and CDs, Technical Support and CropKing supplies not only the products, but also the technology to help growers succeed.

For over 35 years, CropKing has been the leader in controlled environment agriculture. We’ve manufactured and sold greenhouse structures, hydroponic growing systems, growing supplies, and education materials.

Training Tools

Training and Educational Materials for Beginners and Experienced Growers Alike

We pride ourselves in offering the training and support our customers need, in addition to manufacturing top of the line hydroponic supplies. Our popular workshops and greenhouse training courses allow new growers to learn hydroponic basics, expand their operations or diversify their offerings. We also offer a wide variety of educational material including videos, books and downloads.

two men standing inside a greenhouse, holding a blueprint-looking sketch of a greenhouse
designed and built in the usa
Custom Design & Commercial Projects

Let us help you design a facility based on your unique needs! We have a talented team of engineers on staff, available for custom or site-specific builds complete with consulting and general contracting services. CropKing also offers turn-key packages complete with growing & light deprivation systems, heating, cooling, and environmental controls. Our staff can retro-fit your existing greenhouse, design hydroponic systems for your warehouse, or customize almost anywhere you want to grow.

person in a workshop welding the edge of a greenhouse part
person in a workshop welding the edge of a greenhouse part

Did you know our shop manufactures CropKing systems on-site? Check out our shop foreman, Jim Bise, welding up this custom system.

The future of CropKing is that it continues to evolve as an honest company selling an honest product and trying to help people become more successful growers.

— Marilyn Brentlinger, Founder

Latest Articles From Our Blog

  • 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...