Outdoor, Greenhouse or Indoor Tower Farm: Which Setup Fits Your Project?

Outdoor, Greenhouse or Indoor Tower Farm? Let's Compare! 📋

Before we get into the details, here's a quick look at how the three environments compare.

All Tower Farms need water, nutrients, electricity for the pumps and regular plant care. The biggest differences come down to how you provide light, protect your crops and manage the growing conditions.

Notice there's no winner in every category?

That's because the best Tower Farm isn't necessarily the most sophisticated one. It's the one that works for your growing conditions and your business.

A simple outdoor setup might be perfect for one project, while another needs the consistency of an indoor growing environment.

☀️ Outdoor Tower Farms: Let the Sunshine Do the Work!

There's something wonderful about growing food outdoors. Fresh air, natural sunshine, and no need to install rows of grow lights.

For many Tower Farm projects, outdoor growing can be an attractive starting point because you're making use of the light Mother Nature provides for free.

Of course, Mother Nature doesn't always cooperate with your harvest schedule. Anyone who's tried growing lettuce during a Florida summer will know exactly what we mean! 🥵

Why Choose an Outdoor Tower Farm?

Outdoor growing can be a great option when you have suitable weather, enough sunlight and space for your farm.

• Free sunlight: You can avoid the energy costs associated with running indoor grow lights.
• No greenhouse building required: Depending on your site, you may be able to start without constructing an enclosed growing space.
• Room to expand: A suitable outdoor site may offer flexibility to add more towers as your project grows.
• Great for seasonal projects: Outdoor growing can work well for community gardens, educational programs and farms with seasonal production schedules.

What Should You Look for in an Outdoor Site?

Before you start lining up towers, take a good look at the space.

• Sunlight: Does the site receive enough direct sun throughout the growing season? Watch for shade from buildings and trees.
• Water and electricity: You'll need convenient access to both.
• Drainage: Make sure the area doesn't become a swamp after heavy rain.
• Working space: Leave enough room to plant, harvest, clean and move supplies between towers.
• Surface and stability: Towers need a suitable, level location and protection appropriate to the site.
• Crop selection: Choose plants that actually enjoy your climate, rather than trying to persuade them to!

The Biggest Challenge? The Weather! 🌦️

Outdoor Tower Farms are exposed to whatever the local climate decides to throw at them.

That could mean extreme summer heat, freezing winter temperatures, strong winds, heavy rain or sudden changes in humidity.

Even the water temperature inside your reservoirs can become an issue during particularly hot or cold periods.

You'll also need a plan for pests and severe weather.

Who Is Outdoor Growing Best For?

Outdoor Tower Farms may be a good fit for seasonal produce businesses, schools, community projects and growers in climates that support their chosen crops.

But if you're promising a restaurant the same amount of lettuce every single week of the year, make sure your climate can realistically support that commitment.

Need help evaluating sunlight? Our Tower Garden Light Guide explains how much light different crops need.

🌿 Greenhouse Tower Farms: A Little More Protection, Please!

What if you love the idea of using natural sunlight but would prefer a little more protection from the weather?

That's where a greenhouse comes in.

A greenhouse can provide a more sheltered growing environment while still allowing your plants to benefit from sunlight.

And if you're wondering whether we have any experience with this option, we certainly do. Our own Living Towers farm in the Florida Keys uses a greenhouse growing environment.

Now, here's something worth knowing before you rush out and order a greenhouse:

A greenhouse doesn't automatically mean perfect growing conditions.

In fact, if you've ever walked into a greenhouse on a sunny Florida afternoon, you'll know they can get hot. Very hot! 🥵

Why Choose a Greenhouse?

• Weather protection: A suitable structure can help shield crops from rain, wind and other conditions.
• Natural sunlight: You can continue using the sun as your primary light source.
• More environmental options: Ventilation, shade, heating and cooling systems can help you manage growing conditions.
• Potentially longer growing seasons: Depending on the structure and climate, you may be able to grow crops during periods that would be challenging outdoors.

Ventilation Is a Big Deal 💨

Plants need good airflow, and greenhouses need a way to release excess heat and humidity.

Depending on your location, you might need:

• Roof or side vents
• Exhaust fans
• Circulation fans
• Shade cloth
• Heating or cooling equipment
• Humidity management

What works in a greenhouse in Minnesota probably won't be the same setup you'd want in South Florida.

And that's why your climate needs to be part of the planning process from the very beginning.

Don't Forget the Budget

It's easy to focus on the price of the greenhouse structure itself, but there's more to consider.

You'll also need to account for site preparation, utilities, ventilation and any environmental control equipment.

Then there are the ongoing costs of operating those systems.

Who Is Greenhouse Growing Best For?

A greenhouse can be a good fit for growers who want to combine natural sunlight with additional weather protection and some control over their environment.

It's worth considering for commercial produce operations, educational farms and projects that need more protection than an open outdoor site can provide.

Want to see how other growers are using greenhouses? Explore our Greenhouse Tower Farm Stories.

💡 Indoor Tower Farms: You're in Control!

Now let's head indoors.

Imagine growing fresh lettuce in the middle of winter, inside a school, warehouse, commercial building or other suitable indoor space.

No unexpected rainstorms. No scorching afternoon sun. And no wondering whether tonight's forecast is going to ruin your crop.

Sounds pretty good, doesn't it?

Indoor Tower Farms can provide greater control over growing conditions, but that control comes with additional equipment, energy use and management responsibilities.

Why Choose an Indoor Tower Farm?

• Greater environmental control: You can manage lighting, temperature, airflow and humidity with appropriate equipment.
• Year-round growing potential: Indoor farms can support more consistent production schedules when properly designed and operated.
• Flexible locations: Suitable existing buildings may be adapted for growing.
• Educational opportunities: Schools and organizations can bring food production into an accessible learning environment.

Let's Talk About Lighting 💡

Here's the big difference between indoor growing and the other two options:

You're usually responsible for providing the light your plants need.

And no, the regular ceiling lights in your office probably aren't going to produce a bumper crop of lettuce!

Indoor commercial growing generally requires suitable grow lights designed around your crops and tower layout.

You'll need to consider:

• Light intensity and coverage
• Daily lighting schedules
• Distance between lights and plants
• Electrical requirements
• Energy consumption
• Heat generated by the lighting system

For a closer look at plant lighting requirements, visit our Tower Garden Light Guide.

Temperature, Humidity and Airflow Matter Too

Here's something people sometimes overlook when planning an indoor farm:

Plants release moisture into the air. Lots of plants can release quite a bit of it!

That means your growing space may need ventilation, air circulation, cooling and dehumidification.

You'll also want to evaluate:

• Electrical capacity
• Water access and drainage
• Room temperature and humidity
• Flooring and surfaces suitable for farm work
• Cleaning and sanitation
• Safe access for planting and harvesting

And don't assume that because a room already has air conditioning, it's automatically ready to become a commercial growing space.

A fully planted farm with lights and equipment running may place additional demands on the building's systems.

Does Indoor Growing Mean No Pests?

We wish! 😄

Indoor growing can reduce exposure to some outdoor pests, but it doesn't eliminate pest or disease problems.

You'll still need to inspect seedlings, monitor plants, maintain good airflow and follow a regular cleaning schedule.

Who Is Indoor Growing Best For?

Indoor Tower Farms may be particularly appealing to schools, institutions, businesses and growers who need greater control over production.

But remember to compare the benefits of that control against the cost of lighting, climate management and ongoing electricity use.

Want to see an example? Read about an indoor growing project in our Orange County Convention Center Tower Farm Story.

🔎 So, Which Tower Farm Environment Should You Choose?

By now, you might be thinking, "Okay, they all sound pretty good. How am I supposed to choose?"

Fair question!

Instead of starting with the equipment, we recommend starting with what you're actually trying to accomplish.

1. What Are You Planning to Grow? 🥬

Are you growing lettuce for local restaurants? Herbs for a farm shop? Produce for school lunches? Or crops for an educational program?

Different plants have different lighting, temperature and growing-time requirements.

And those requirements will influence which environment makes the most sense.

Think about how much you want to harvest each week or month, and whether you need a consistent supply throughout the year.

2. What's Your Climate Like? 🌡️

Don't just think about your nicest growing month.

Think about the worst one!

How hot does it get in summer? How cold does it get in winter? Do you experience strong winds, hurricanes, heavy rainfall or extended cloudy periods?

These conditions can have a major impact on crop performance and operating costs.

3. What's Your Real Budget? 💰

And by real budget, we mean more than the price of the towers.

Depending on your project, you'll also need to consider:

• Site preparation and utilities
• Greenhouse construction or building modifications
• Grow lights and electrical equipment
• Heating, cooling and ventilation
• Seedlings, nutrients and other growing supplies
• Labor and ongoing maintenance
• Harvesting, packaging and delivery

An inexpensive setup isn't necessarily the most economical one if it struggles to produce the crops you need.

And a more expensive system isn't automatically the better choice if your production goals don't justify the additional operating costs.

Our Guide to Starting a Vertical Farm covers more of these considerations.

4. Have You Allowed Enough Working Space? 🚶

It's tempting to fit as many towers as possible into your available space.

More towers means more plants, right?

Well, yes. But only if you can actually reach them!

You'll need room to plant seedlings, harvest crops, clean equipment, move supplies and carry out routine maintenance.

Some farms also need dedicated areas for packing, washing or cold storage.

Learn more in our article on How Tower Farming Can Reduce Labor and Maximize Space.

5. Can You Start Small and Learn? 🌱

If you're planning a larger commercial operation, a smaller trial can be a valuable way to test your assumptions.

Try growing your intended crops in the proposed environment and track what actually happens.

How much did you harvest? How long did the crops take to grow? How much time did the work require? What were your operating costs?

Those numbers can tell you far more than a beautiful picture of a farm on the internet.

🌱 Planning a Tower Farm? We Can Help!

Still not sure whether outdoor, greenhouse or indoor growing is the right choice?

That's completely normal. There are quite a few moving parts when you're planning a commercial growing project!

At Living Towers, we can help you work through the practical questions before you invest in equipment.

And you don't need to have everything figured out before getting in touch.

• Already have a space? Tell us its dimensions and what it's currently used for. We can help you explore a practical layout.
• Know what you want to grow? Share your crops and production goals so we can discuss possible tower requirements.
• Working with a budget? We can help you explore suitable options and identify additional costs to consider.
• Just researching? That's fine too! It's much better to ask questions before spending money.

Start with our Tower Farm Planning Guide to explore the process in more detail.

Or, if you're ready to talk through your project, get in touch with Living Towers.

We'd love to hear what you're planning! 🌿