I put those designs on the Internet and made a social media site where people could comment on the design and give feedback. For three or four months, not much was happening. But people were buying the parts and creating their own window farms, so all of a sudden there was a flurry of posts.

NBC has also created a window farm in its Rockefeller Center store where it's growing 25 types of vegetables. The plants will be donated to four public schools in the city.

If you've got tools, space, a little extra time, and a knack for building things, constructing your own windowfarm gives you additional control to customize the system for your own setup.