Zinna root in water?

I had no idea this happened. No wonder the flowers were lasting so long! they were in there making a new home for themselves, getting all acquainted like and whatnot.

all i did was put them in there with water and a bit of liquid plant food and then placed them in a sunny, north window. Pretty neat. I was amazed. They are one of my favorite cut flowers now so i'll have to grow plenty next time i sow.