FAQs

Frequently Asked Questions for Tower Garden® & Tower Farms

1. How many Towers will fit on my site/greenhouse/rooftop/etc.?
For 13-50 Tower farms, calculate 20 square feet per Tower on average. This includes Towers, dosing station, aisle spacing, and propagation bench. Example: a 20 x 36 greenhouse = 720 sf, so 720 divided by 20 equals 36 Towers.
2. How much water and electricity service do I need to operate a farm?

For 13-50 Tower farms, a standard hose bib and one 20 amp electrical circuit is normally sufficient by using multiple timers and staggered cycle times.

FYI, each pump draws less than one amp, so you can run 18-20 Towers per timer.
For Greenhouse farms, we can provide an electrical and water layout to assist with planning.

*Consideration must also be made for any other electrical needs such as exhaust and circulation fans, lighting, propagation heat mats, etc.

3. What is the difference between a residential and commercial Tower? Can I retrofit?
Commercial Towers have a larger pump, an auto fill valve, and a drain valve. Yes, we can retrofit existing Towers to 7, 9, or 11 pots tall.
4. How much do the Towers weigh?
A commercial Tower weighs approx. 220 lbs at 11 pots tall, when full of water and plants.
5. What is the yield from a Tower Garden farm?
Yield varies in any growing system by crop, weather, seeding rate, and other factors. In good growing conditions, lettuce, herbs, and leafy greens will have an average yield of 3-6 ounces per port per 21-28 day growing cycle. Yield for fruiting vegetables like cucumbers and tomatoes depends on the variety and season.
6. How many crops per year will I get?
The number of turns per year varies by crop, weather, and other factors. Production rates are most dramatically impacted by lack of light and cold weather, which can be managed utilizing Controlled Environment Agriculture (CEA) methods. For greens, lettuces, and herbs, expect a 21-28 day growing cycle from seedling transplant to harvest. Using the step-up method of seedling propagation, our farmers are further reducing the cycle time seasonally.
7. What can I grow?

Leafy greens, lettuces, herbs, microgreens, and fruiting vegetables.

8. Do I need grow lights?
Every indoor farm needs grow lights to provide the light required for plant growth. Some greenhouse farms need grow lights to supplement natural sunlight, depending on the weather conditions and the need to maximize yield vs. lighting costs.
9. What type grow lights can I use?
For small scale growing up to 12 Towers, we recommend the Tower Garden’s LED adjustable lights with support cages. For commercial production, we recommend overhead lighting using High Pressure Sodium or Metal Halide technology. We can provide a basic lighting layout detailing location and quantity of fixtures.
10. Do you provide a business plan or budget?
No, a business plan is unique to you and your vision for a farm. You should budget for local variables in overhead, labor costs, local pricing, etc. However, we can provide data specific to our Tower Garden technology that will help to you fill in some line items on your budget.
11. How much electricity does the Tower use?
The commercial pumps are rated at 58 watts per hour, and a normal timer setting is 3 minutes on and 12 minutes off, so that is 4.8 hours per day of run time. So, 58w x 4.8 hrs = 278 watts per day per Tower multiplied by your local electricity rates.
12. How much water does the Tower Garden use?
On average, about 1 gallon of water per day per Tower multiplied by your local water rates.
13. How much water does the Tower Garden use?
On average, about 1 gallon of water per day per Tower multiplied by your local water rates.
13. How long does a set of nutrients last?
Each set of dry nutrients makes at least 10,000 gallons of finished solution at the full rate (example 1:200). The rate can be much lower (example 1:400) in warm season.
14. How much do grow lights cost?
We don’t sell grow lights for large scale production, but can suggest fixture specifications and layouts so that you can source and price them.
15. How much labor does it take to run a farm?
One full time worker can easily manage seeding, harvesting, and maintenance up to 50 Towers. For large farms, budget one full time worker for every 75-100 Towers, plus a manager and owner/operator.
16. How much can I sell my produce for?
We suggest a minimum wholesale pricing of $1.50 for cut or living harvest, and a minimum retail pricing of $2.50. Market pricing varies widely, and local market research by customer type is critical. We suggest a blend of customer types to diversify and increase revenue sources.
17. What size farm do I need for a profitable business?
Because many farms operate in a non-profit setting such as a school, outreach, or restaurant, they can often cover costs with any size farm. The Tower Garden is proven in virtually any growing environment, and we have clients with profitable farms of all sizes.
18. What is my ROI?
ROI is a function of your specific business plan and approach, so there is no single answer. The Tower Garden is proven in virtually every growing environment, along with a goal to help you create a successful commercial farm.
19. How much does a greenhouse cost?
We do not sell greenhouses, so you are free to choose the supplier that best suits your needs. Because the Tower Garden technology is unique and greenhouse types and technology vary widely, we provide specifications to maximize the efficiency in your greenhouse type and climate. We can make recommendations for greenhouse packages and greenhouse contractors.
20. Do you provide installation and training?
Yes, we provide a variety of services to help you install and operate your farm.
21. Do you provide technical support after the sale?
Yes, included with your farm is a complete installation, operations, and maintenance manual as well as phone and email support for initial farm setup.