Veggies in a Flower Garden

I was in Chicago a couple weeks ago for a work conference.  At the end of the day I took a walk down to Millennium Park.  Check out the pictures of these flower beds.  Love the idea of growing corn, Swiss Chard and other vegetables in your flower garden. This makes for a really interesting flower garden from a color, variety, height and texture perspective. Would love to see Milwaukee do something like this in their public gardens. I am going to try growing corn in my flower garden next year for sure.