A Tower Garden is an aeroponic growing system. Using just water and a nutrient called Tower Tonic, a wide variety of vegetables and herbs can be grown. Visit skoontz.towergarden.com to find out more.
When I got my first Tower Garden in 2010, I tried growing tomatoes that came with the Tower. They were leggy (cue the “Attack of the Killer Tomatoes” music here) and attracted insects. I switched to lettuces and did much better, but never investigated why the tomatoes didn’t do well. Last year I wanted to try tomatoes indoors again. This time I asked questions and did some investigation on my own. I discovered that it’s possible to grow tomatoes indoors, but they won’t do near as well as growing outdoors. There are 2 reasons why.
- Light spectrum
We have to mimic inside what God designed perfectly to grow flowering fruits and vegetables outside.
Bees pollinate your flowers which produces the fruit and vegetables. Indoors you’ll need to pollinate the flowers yourself. That trick can be learned – and with the declining bee population, it isn’t a bad skill for outdoor gardeners to know.
But the most difficult problem is the light spectrum. For a plant to flower and produce fruit, it needs light in the low end of the spectrum—around 3,000 Kelvin. For a plant to produce nice leaves it needs a light in the high end of the spectrum—around 6,000 Kelvin. So tomatoes, for example, need a 6,000 Kelvin light during the leafy part of growth. Then they need a 3,000 Kelvin spectrum to produce the flowers and fruit.
Outside, the tomato gets this as the summer progresses. During the heat of the summer, the light is on the higher end of the spectrum helping the plant to produce nice leaves. As the summer progresses and the tomato grows, the light switches to the lower end of the spectrum helping the tomato to produce the flowers and fruit. (Here’s more than you probably ever want to know about light spectrum. http://suburbanvegetablegardening.com/lighting-an-indoor-garden/)
The lights that come with the Tower Garden are in the 6,500 Kelvin range. This spectrum of light produces great leafy greens, but won’t help produce the flowers.
Could you switch bulbs mid-way through the growing cycle of a tomato plant? There are professional growers that do, .but I’ll just stick with my leafy greens and herbs indoors
August 24, 2015
Planted 2 purchased rockwool cubes of Burpee sweet basil.
October 22, 2015
The sweet basil grew well. I harvested twice. Leaves were very large.
I went out one evening and found my plants wilted. The Tower Garden pump had quit working. Thinking it was totally dead, I ordered another one. About a month later, a friend of mine took the pump and fixed it. Here’s how we did it.
Now use a toothbrush to clean the inside of the pump. If all goes well, this should get the Tower Garden pump working again.
As always, just because this worked for me, doesn’t mean it’ll work for you.
In order to get more space for growing arugula in the Tower Garden, I decided to purchase full block of rockwool and cut my own. I found some at htgsupply.com. (I also purchased from them a single-bulb, t5 fixture to replace one of my fixtures that went out.)
August 11, 2015
Thanks to Joe of Level2 Concepts for the straw idea.
August 13, 2015
August 15, 2015
August 23, 2015
August 29, 2015
October 25, 2015
After 2 months and 2 weeks, I harvested 11.2 ounces of arugula. This was in the Tower Garden a lot longer than I would like. The arugula gets very strong with age. So if you like it spicy, let it grow. 🙂
I’m going to experiment more with cutting my own rockwool, but on a shorter time-frame to better compare.