Ihave been thinking about greenhouse-grown vegetables and fruits ever since my last article. How many growers are there in Ohio? What kind of systems do they use? What do they produce? The search for answers led me to a wealth of information, not about greenhouses, but about CEA — controlled environment agriculture.

CEA refers to crop production conducted in an enclosed structure that allows for complete or partial control of growing conditions, including light, nutrients, carbon dioxide, temperature and humidity.

Greenhouses are the obvious and most common structure to use, but so are repurposed buildings. Maybe even a warehouse. A structure can be used as long as it is designed and equipped to provide optimal growing conditions for the crop.

Probably the biggest challenge is the start

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