I get asked versions of the same question at every farmers market and every farm tour: "So is this like vertical farming?" The answer is yes, sort of, but also no. What we do at Wholly Water Farms falls under a broad umbrella called controlled-environment agriculture, or CEA, and it includes everything from the simplest plastic-covered hoop house to a 30-story indoor farm in Newark. The term matters because it describes a fundamental shift in how we think about growing food — not at the mercy of weather, but in partnership with technology.

What Is Controlled-Environment Agriculture?

Controlled-environment agriculture is any method of food production where key environmental parameters — light, temperature, humidity, carbon dioxide levels, and nutrient delivery — are actively managed rather than left to outdoor conditions. The degree of control varies enormously. A high tunnel greenhouse with roll-up sides controls temperature and rain exposure but relies on natural sunlight. A fully enclosed indoor vertical farm controls every variable down to the parts per million of CO2 in the air. Both are CEA. The common thread is intentional management of the growing environment to improve consistency, yield, and quality.

This is not a new concept. Greenhouses have existed for centuries — the Romans grew cucumbers under sheets of mica. What has changed is the technology available to manage these environments efficiently, and the economic and climate pressures that make doing so increasingly necessary.

What Are the Different Types of CEA Systems?

CEA systems fall along a spectrum of complexity and investment. Understanding where each type sits helps clarify what makes sense for different situations.

High tunnels (hoop houses): The simplest and cheapest CEA structure. Plastic-covered metal hoops provide season extension and rain protection. No artificial lighting or climate control. Startup cost: $1 to $3 per square foot. Widely used by small farms for extending tomato and lettuce seasons.
Greenhouses: More permanent structures with heating, cooling, ventilation, and sometimes supplemental lighting. Can be passively or actively climate-controlled. Startup cost: $15 to $50 per square foot depending on sophistication. The backbone of commercial flower and vegetable production worldwide.
Indoor vertical farms: Fully enclosed, no natural sunlight. All light from LEDs, all climate parameters precisely managed. Multiple growing layers stacked vertically. Startup cost: $100 to $500 per square foot. Highest yield per square foot but highest energy cost.
Container farms: Repurposed shipping containers fitted with hydroponic systems and LED lighting. Turnkey and portable. Startup cost: $30,000 to $100,000 per container. Good for remote locations, military installations, and educational programs.

What Are the Advantages of Controlled-Environment Agriculture?

The advantages are significant and measurable. CEA systems can produce food year-round regardless of season, weather, or climate, which is a fundamental shift from traditional agriculture's dependence on growing seasons. Water savings are dramatic — hydroponic and aeroponic CEA systems use 90 to 95 percent less water than field agriculture because water is recirculated rather than lost to soil drainage and evaporation. Gotham Greens, one of the larger commercial CEA operations, reports growing 35 times more lettuce per acre than conventional farms while using 95 percent less water.

Pest and disease pressure drops dramatically in enclosed environments. Most indoor CEA operations use zero pesticides because physical barriers prevent pest entry. Product quality and consistency improve because plants are never stressed by drought, frost, hail, or heat waves. And proximity to consumers reduces transportation costs, food miles, and post-harvest spoilage — a head of lettuce from an urban greenhouse reaches the store shelf the same day it is harvested, instead of spending a week in a refrigerated truck from California or Arizona.

What Are the Disadvantages and Challenges of CEA?

If CEA were purely advantageous, every farm would be doing it. The challenges are real and substantial. Energy cost is the biggest hurdle, especially for indoor vertical farms that replace sunlight entirely with LEDs. According to industry analysis, vertical farms use 30 to 120 times more electricity than open-field farming, and that electricity cost is the primary reason CEA produce still commands a price premium. High-tech greenhouses are roughly 1.5 times more expensive than field production, and vertical farms are approximately 3 times more expensive on a cost-per-unit basis.

Startup capital is significant across all CEA types except basic high tunnels. A commercial-scale indoor vertical farm can cost millions to build and equip. Even a modest greenhouse operation requires tens of thousands of dollars in infrastructure before the first seed goes in the ground.

Crop selection is limited. The economics of CEA currently work for leafy greens, herbs, microgreens, strawberries, and a few other high-value crops. You are not going to see indoor wheat, corn, or soybeans — the value per square foot simply does not justify the energy and capital cost. This may change as LED efficiency improves and energy costs decline, but today, CEA is primarily a leafy greens and specialty crop business.

Why Does CEA Matter for Florida?

Florida presents a unique case for controlled-environment agriculture. We have abundant sunlight and warm temperatures that support year-round outdoor growing in theory. But in practice, Florida growers face hurricanes that can destroy an entire season's crop in hours, summer heat that makes it impossible to grow cool-season crops outdoors from May through September, intense pest and disease pressure year-round, and a rainy season that complicates harvest and promotes fungal disease.

CEA addresses every one of these challenges. A well-built greenhouse or indoor farm operates through hurricanes. Climate control allows year-round lettuce, spinach, and herb production regardless of outdoor temperatures. Physical barriers keep out the whiteflies, thrips, and nematodes that plague Florida field growers. And controlled irrigation eliminates the problems of excess rainfall.

At Wholly Water Farms, we operate as a small-scale CEA facility. Our microgreens production happens in a controlled indoor environment with LED lighting, climate management, and hydroponic growing systems. We are not a 100,000-square-foot vertical farm, but we apply the same principles on a scale appropriate to our local market. That is the beauty of CEA — it scales from a spare bedroom with a grow rack to a major commercial installation.

Who Are the Major Players in CEA?

Several companies have demonstrated that commercial-scale CEA can work, each with a different approach. Gotham Greens operates rooftop and ground-level greenhouses in multiple states, producing approximately 100 million heads of lettuce annually using 100 percent renewable electricity. BrightFarms focuses on greenhouse-based production close to major retail distribution centers. AeroFarms pioneered large-scale indoor vertical farming and has demonstrated sustained profitability in microgreens production. These companies have survived the industry's growing pains — including some high-profile failures and bankruptcies — by focusing on operational discipline and unit economics rather than growth at all costs.

The global CEA market was valued at roughly $103 billion in 2025 and is projected to exceed $200 billion by 2030, driven by improving LED efficiency, declining automation costs, and growing consumer demand for locally produced food.

What Is the Future of CEA in Florida Cities?

Florida's major metro areas — Miami, Tampa, Orlando, Jacksonville — represent significant opportunities for urban CEA operations. These cities have large populations, strong restaurant and retail demand for fresh produce, high land costs that favor vertical growing, and year-round growing conditions that reduce heating costs compared to northern facilities. Solar energy potential is excellent, which can offset the electricity demands of indoor farming. Several small and mid-scale operations already serve these markets, and I expect that number to grow substantially over the coming decade.

The path forward for CEA is not about replacing traditional farming — it is about complementing it. Field agriculture will continue to produce the bulk of our grains, fruits, and staple crops. CEA will increasingly supply the fresh, perishable, high-value crops that benefit most from local production and year-round availability. For those of us doing this work already, the trajectory is encouraging. For more on the science behind our systems, explore our Farm Science series.

Frequently Asked Questions

Is controlled-environment agriculture the same as vertical farming?

Vertical farming is one type of controlled-environment agriculture, but CEA is a much broader category. It includes greenhouses, high tunnels, container farms, and any system where environmental parameters are actively managed. Vertical farming specifically refers to growing crops in stacked layers inside a fully enclosed building with artificial lighting. All vertical farms are CEA, but not all CEA is vertical farming.

Can CEA replace traditional outdoor farming?

Not entirely, and it does not need to. CEA excels at producing leafy greens, herbs, microgreens, and certain specialty crops year-round in urban areas. But staple crops like wheat, rice, corn, and soybeans are far too low in value per square foot to justify CEA economics. CEA is best understood as a complement to field agriculture, not a replacement for it.

How much water does CEA save compared to field farming?

Hydroponic and aeroponic CEA systems use 90 to 95 percent less water than conventional field agriculture. This dramatic savings comes from water recirculation — the same water cycles through the system repeatedly, with plants absorbing what they need and the rest returning to the reservoir. The only water losses are through plant transpiration and occasional system maintenance.

Is CEA produce more expensive than conventional produce?

Currently, yes, though the gap is narrowing. CEA lettuce and herbs typically cost 20 to 50 percent more at retail than conventionally grown equivalents. The premium reflects higher energy and capital costs. However, CEA produce is usually fresher, lasts longer in the refrigerator, and is grown without pesticides, which many consumers consider worth the difference. As LED efficiency improves and energy costs decrease, the price gap should continue to shrink.