Can anyone help me identify these purple plants?

We received some of these purple plants from a friend, they are growing in his backyard. I mentioned that I liked them and he pulled some out of the ground for me and told me to stick them in a the ground and the hey would grow. He didn't know what type of plant they were though and I'd like to identify them do I can learn more about them. Thanks!
q plant identification, gardening, Trying to identify purple plants
Trying to identify purple plants.
q plant identification, gardening
  22 answers